SERVICE MANUAL BOOK - 1 PUNCH BNCAP BSVI
Developed by: Technical Literature Cell. Release Date : Sept 2023 / First Edition. The information provided in this manual is based on the latest product information available at the time of publication. . C Copyright 2022 TATA MOTORS All rights reserved. The information in this manual shall not be reproduced or copied, in whole or in part, in any form without written permission from TATA MOTORS PASSSENGER VEHICLES LTD. Vehicles are subject to modification in design, specification and equipment. Also refer the Service Circulars released by Customer Support about product & procedures.
INTRODUCTION This Service manual provides information pertaining to technical Specifications, repair, maintenance and overhaul of different aggregates fitted on TATA PUNCH BNCAP BSVI. All the data contained in this manual is based on the latest product information available at the time of publication and with the assumption that the person is well aware of general Automobile practices. This manual emphasizes the special features of the vehicle and thus benefits our workman, who is conversant with general Automobile practices. For ease of use, this workshop manual is divided into 3 volumes, comprising several sections. Each aggregate has a separate section. THE BOOK – 1 CONTAINS SRS ELECTRICAL BODY THE BOOK – 2 CONTAINS NO CHANGE - REFER DTC OF PUNCH BSVI & BSVI PHASE-2 THE BOOK – 3 CONTAINS SERVICE SCHEMATICS THE BOOK – 4 CONTAINS INFO. FITMENT DRAWINGS
TABLE OF CONTENT SR. NO GROUP 1 ELECTRICAL 2 BODY 3 SRS
ELECTRICAL
ELECTRICAL CONTENTS 1. INSTRUMENT CLUSTER ....................................................................................................... 1 A. FEATURES ......................................................................................................................... 1 B. CIRCUIT DIAGRAM ............................................................................................................ 3 C. PIN DETAIL......................................................................................................................... 4 D. INSTRUMENT CLUSTER FEATURE MAPPING................................................................. 5 E. TELL TALES INFORMATION.............................................................................................. 6 F. REMINDER FEATURES (COMMON FOR 7 INCH AND 4 INCH DISPLAY)........................ 9 G. MAIN CONNECTOR PIN-OUTS ....................................................................................... 11 H. FUEL GAUGE DETAILS ................................................................................................... 12 I.. TEMPERATURE BAR GRAPH DETAILS .......................................................................... 13 J. CHIME TABLE ................................................................................................................... 13 K. REMOVAL OF INSTRUMENT CLUSTER ......................................................................... 14 2. SWITCHES ........................................................................................................................... 15 A. PASSENGER AIRBAG (PAB) SWITCH ............................................................................ 15 B. PASSENGER AIRBAG (PAB) INDICATOR ....................................................................... 16 3 FUSE AND RELAY BOX DETAILS ...................................................................................... 18 A. FUSE AND RELAY BOX LAYOUT .................................................................................... 19 B. ENGINE FUSE AND RELAY BOX..................................................................................... 20 C. CABIN FUSE AND RELAY BOX ....................................................................................... 24
ELECTRICAL 1 1. INSTRUMENT CLUSTER A. FEATURES Dynamic and monitoring information (e.g. fuel level) to which the driver should respond, is indicated in the instrument cluster. The Instrument Cluster has following features: Analogue Gauge : Speedometer, Tachometer and Fuel gauge For 7 Inch IPC: Only speedometer is analog and rest are on display as digital gauges For 4 Inch IPC: Speedometer and Tachometer are analog guages and rest are bargraphs on display Bar graph: Engine coolant Temperature (as a part of LCD display), Fuel gauge LCD Display : Clock, Odometer & Trip meter (A & B) Tell tales Mode & Set switches 7 Inch IPC
ELECTRICAL 2 4 Inch IPC
ELECTRICAL 3 B. CIRCUIT DIAGRAM
ELECTRICAL 4 C. PIN DETAIL BASIC ELECTRICAL SPECIFICATIONS: SR.NO. PARAMETERS SPECIFICATIONS 1 Nominal Voltage 13.5 V DC 2 Operating Voltage range 8 to 16 V DC 3 Test voltage 13.5 V DC 4 Boot-up time < 0.5 secs. 5 Operating Current 2 Amps. Max. @ all loads ON 6 Sleep mode (Ignition off) current < 1mA 7 Operating Temperature - 30°C to + 85°C 8 Storage Temperature -40°C to +85°C
ELECTRICAL 5 D. INSTRUMENT CLUSTER FEATURE MAPPING SR No. FEATURE HIGH LOW 1 Speedo meter Gauge √ √ 2 High end cluster has Digital gauge Tachometer with Dual color Pointer & Low end cluster has Analog Gauge √ (scale color change) Analog Gauge (Pointer color doesn’t change) 3 Fuel TFT Bar Graph √ NA Fuel LCD Bar Graph NA √ 4 Engine Coolant Temperature TFT Bar Graph √ NA Engine Coolant Temperature LCD Bar Graph NA √ 5 Day and Night Time Illumination √ √ 6 Key In Reminder √ √ 7 Park Brake ON reminder √ √ 8 Seat Belt Reminder √ √ 9 Over Speed Warning √ √ 10 Odometer √ √ 11 Two Trip Meters (Trip A and Trip B) √ √ 12 Digital Clock √ √ 13 Average Fuel Economy for both Trip A and Trip B √ √ 14 Average speed and trip timer for both Trip A and Trip B √ NA 15 Distance to Empty √ √ 16 Instantaneous Fuel Economy √ √ 17 Outside Ambient Temperature (Applicable only for AMT and FATC variant only) √ √ 18 Current Gear Indicator (For both MT and AMT) √ √ 19 Gear Recommendation √ √ 20 Drive Mode Indicator √ √ 21 Independent Door Ajar Warning (3D animation for high IPC) √ √ 22 Text messages and warnings with Voice alert √ √ NA - Not applicable √ – Applicable Note: Provision for future requirement
ELECTRICAL 6 E. TELL TALES INFORMATION TELL TALES INDICATOR REMARKS Turn Signal One of these symbols comes ‘ON’ when the turn indicators is switched ‘ON’. Turn signal lamps can be operated only when the Ignition supply is ‘ON’ and by using the turn indicator switch on the Combi-switch. The direction indicator arrow on Instrument Cluster flashes along with external indicator lights as selected. Both telltales shall blink simultaneously when Hazard switch is pressed irrespective of Ignition ON and the Tick-Tock sound shall be given when any one or both the telltales are ON. High Beam This symbol comes ‘ON’ when the headlamp high beam is switched ‘ON’ and High beam was flashed. Battery charging This symbol lights up when the ‘IGN’ is turned ‘ON’ and should go ‘OFF’ after the engine starts. NOTE: If it remains ‘ON’ while the engine is running, it indicates that the battery is not getting charged. Switch off all unnecessary electrical equipment and get the problem attended to at TATA authorized Service center. Park Brake /Brake Fluid oil level indicator/ABS or EBD Malfunction. This indicator comes ‘ON’ for approximately 4 seconds when ignition is turned 'ON' and goes ‘OFF’. If it remains ‘ON’, it may indicate: 1. Brake fluid level is low. 2. Parking brake is applied. It shall go ‘OFF’ when it is released. 3. Fault in ABS / EBD system NOTE: If it remains ‘ON’ while the engine is running, it indicates that the brake fluid is low. Get the problem attended to at TATA authorized Service center. Diesel PreHeat/Glow plug indicator This symbol comes ‘ON’ when the ignition key is in the ‘ON’ position. NOTE: Engine shall be started only after this indicator goes ‘OFF’. Malfunction Indication Bulb This symbol lights up when the ‘IGN’ is turned ‘ON’ and should go ‘OFF’ after the engine starts. CAUTION: This symbol remains ‘ON’ for any engine related fault that may cause increase in emission levels of the car beyond the regulatory limit. Get the problem attended to at TATA authorized Service center Low Engine Oil Pressure Indicator When the Ignition is turned ‘ON’, this symbol lights up and goes ‘OFF’ as soon as the required engine oil pressure is developed after starting the engine. WARNING: If the low oil pressure indicator does not glow or remains ‘ON’ with the ‘IGN’ ‘ON’ and engine is running, it indicates a fault in the electrical circuit / lubrication system. Take your car to a TATA Authorized Service Centre. Low Fuel Indicator This symbol lights up when ignition is turned ‘ON’. The symbol lights up continuously if fuel level in the tank is low. Fuel needs to be filled immediately. It shall blink if there is any fault in the system. Take your car to the nearest Tata authorized service station.
ELECTRICAL 7 TELL TALES INDICATOR REMARKS High Coolant Temperature warning This symbol lights up when the ignition is turned ‘ON’ and goes ‘OFF’ in approx. 4 sec. If the engine is overheating, this indicator blinks along with an audible buzzer at this stage, take the car to the nearest authorized Service outlet. This symbol blinks and audible buzzer sounds simultaneously when engine coolant temperature is more than normal. When engine coolant temp increases to hazardous level, telltale shall blink with RED color and it is accompanied by audio warning. WARNING: Never remove the radiator pressure cap from the radiator when the engine is hot. Do not restart the engine until the problem has been duly attended. Water in fuel Indicator This symbol indicates excess water accumulation in the sedimenter. It shall come ‘ON’ when Ignition is turned ‘ON’ and shall go ‘OFF’ in approx. 3 seconds. When this lamp blinks along with chime take the car to the nearest authorized Service center). NOTE: This telltale is applicable only for Diesel engine ABS Indicator When Ignition is turned ‘ON’, this symbol comes ‘ON’ for 4 seconds and goes ‘OFF’. This symbol shall continue to remain 'ON' if there is a problem in the ABS system. NOTE: If the warning is continuously ON Take your Car to TATA authorized service center. Airbag Indicator The air bag warning symbol comes on for approximately 4 seconds when the ignition is turned ‘ON’ and goes ‘OFF’. WARNING: If it remains ‘ON’ or blinks, Get the problem attended to at TATA authorized Service center. Driver Seat belt Indicator Seat belt warning indicator comes ‘ON’ for 4 seconds, when ignition is turned ‘ON’ irrespective of seat belt buckle status. If seat belt is not fastened then Telltale will be ON as initial warning with No audio chime. If seat belt remains unbuckled and vehicle speed goes above 15 kmph, Final Warning will start with audio chime for 90 seconds continuously. NOTE: • Once the seat belt is fastened, the buzzer and warning indicator will go ‘OFF’. • Seat belt audio alarm remains OFF when reverse gear is engaged. Co-Driver Seat belt Indicator (passenger) Seat belt warning indicator comes ‘ON’ for 4 seconds, when ignition is turned ‘ON’ irrespective of seat belt buckle status. If Co-Driver is present & its seat belt is not fastened then Telltale will be ON as initial warning with No audio chime. If seat belt remains unbuckled and vehicle speed goes above 15 kmph, Final Warning will start with audio chime for 90 seconds continuously. NOTE: • Once the seat belt is fastened, the buzzer and warning indicator will go ‘OFF’. • Seat belt audio alarm remains OFF when reverse gear is engaged.
ELECTRICAL 8 TELL TALES INDICATOR REMARKS Rear Passengers Seat Belt Indicator The Rear Passengers seatbelt warning indicator turns ON when ignition is turned ON. Rear seat belts reminder turns ON irrespective to occupants, the warning lamp remains ON for around 60 seconds if the Rear seatbelts are not fastened for all Rear seats If the Rear seatbelt remains unbuckled and vehicle goes above 15 kmph, then final audio warning will go on for 30 seconds & Seat belt tell-tale light will blink when audio alarm is active. Note: Once the seatbelt is fastened the buzzer and warning lamp turns OFF Immobilizer Warning Indicator This symbol is of a system that disables engine starting if User do not use the original key. The user has to use original key for authentication and unlocking the car. Refer to Immobilizer section for details. Lamp Blink: Car is in immobilized condition when key is not inserted. Lamp OFF: Normal condition (Authenticated user) and engine shall start. Lamp ON: Problem with key/system. Get the problem attended to at TATA authorized Service center. Check Engine Lamp This is symbol lights up when the ‘IGN’ is turned ‘ON’ and should go ‘OFF’ after the engine starts. CAUTION: This symbol shall remain ‘ON’ for any engine related fault that may cause damage to engine. Take your car to a TATA Authorized service center. Cruise Control This symbol lights up when the ‘IGN’ is turned ‘ON’ and shall go ‘OFF’ after 4 sec. The Cruise Control is used to indicate the status of cruise control system to the driver. Lamp ON indicates cruise control feature is present and it is activated. DRL Lamp This symbol lights up when the ‘IGN’ is turned ‘ON’ and shall go ‘OFF’ after 4 sec. This symbol comes ON when the Day Time Running lamp is ‘ON’. City Lamp When ignition is turned ‘ON’, this symbol comes ‘ON’ for four seconds and goes ‘OFF’. CITY lamp ON indicates City drive mode. This mode is used to achieve optimum torque with fuel economy ECO Lamp When ignition is turned ‘ON’, this symbol comes ‘ON’ for four seconds and goes ‘OFF’. ECO lamp ON indicates Economy drive. This mode is used to achieve better fuel economy. SPORT Lamp This symbol lights up when the ‘IGN’ is turned ‘ON’ and goes ‘OFF’ after 4 seconds. This symbol comes ON when SPORT driving mode is activated when more torque is required. Press Brake / Clutch (Used in PEPS Vehicles) This symbol lights up when the ‘IGN’ is turned ‘ON’ and remains ON until user press clutch to start the engine. This symbol is turns OFF when vehicle is in Cranking / Running Mode. Key Not Detected (Used in PEPS Vehicles) This symbol lights up when the Valid UID (User Identification Device) is not detected inside the vehicle.
ELECTRICAL 9 TELL TALES INDICATOR REMARKS EPAS Lamp This symbol lights up when the ‘IGN’ is turned ‘ON’ and goes ‘OFF’ after 4 seconds. This symbol comes ON when there is malfunction in Electronic Power Assisted Steering. Get the problem attended to at TATA authorized Service center. Speed Limit Lamp Speed Limit warning indicator comes ‘ON’ for 4 seconds, when ignition is turned ‘ON’. When Vehicle Speed cross 80 Km/hr then Speed Limit Warning Indicator will turn ON along with one time Chime per 2 Minute (Audible Warning). If Vehicle Speed crosses 120 Km/hr then along with Speed Limit Warning Indicator, Chime will start continuously ON till vehicle speed is above 120 Km/hr. Once Vehicle Speed is reduce below 120 Km/hr but above 80 Km/hr, then Continuous Chime will stop but Speed Limit Warning Indicator will remains ON continuously with one time Chime per 2 Minute (Audible Warning). When Vehicle Speed is reduce below 80 Km/hr, then Speed Limit Warning Indicator along with Chime ( if it On ) will gets turns OFF. Diesel Particulate Filter Lamp When ignition is turned ‘ON’, this symbol comes ‘ON’ for four seconds and goes ‘OFF’. DPF lamp monitors the clogging of exhaust gas filter. The lamp turns ON when clogging is more than some level. Take your car to a TATA Authorized service center. NOTE: This telltale is applicable only for Diesel engine F. REMINDER FEATURES (COMMON FOR 7 INCH AND 4 INCH DISPLAY) Key In reminder While leaving your vehicle, if you forget key inside and Ignition is OFF, buzzer shall sound. Remove Key to stop the warning. Park Lamp ON reminder While leaving your vehicle, if user forget to turn OFF the Head Lamps, buzzer shall sound. Switch off Park Lamps to stop the warning. Do not forget to turn OFF your Head Lamps as it may drain your Car Battery. Park Brake ON reminder If Park Brake is applied and vehicle is driven above 5 Km/h, telltale shall blink along with chime continuously. Disengage the park brake to stop the warning Engine Coolant Temperature If engine coolant temperature goes high then Buzzer shall sound to alert you. Reverse Gear reminder If reverse Gear engaged Buzzer shall sound to alert you. This chime is applicable for both Manual and AMT transmission vehicles. WIF/FFC Chime If water is detected in fuel buzzer shall sound to alert you. Driver Seat Belt reminder
ELECTRICAL 10 If seat belt remains unbuckled and vehicle speed goes above 15 km/ hr, Final Warning will start. Audio Chime will continue for 90 seconds. Seat belt telltale will remain continuously ON when audio alarm is active. NOTE: Buckle the seat belt to stop Audible warning. Co-Driver Seat Belt reminder If Co-Driver is present & its seat belt remains unbuckled and vehicle speed goes above 15 km/ hr, Final Warning will start. Audio Chime will continue for 90 seconds. Seat belt telltale will remain continuously ON when audio alarm is active. NOTE: Buckle the seat belt to stop Audible warning. ESCL Chime This feature inform the driver to rotate steering wheel when ESCL gets engaged inadvertently. This chime is sounded in IGN OFF mode. Drive Mode Chime If drive modes chaged from city to eco or back to city Buzzer shall sound to alert you. Speed Limit Chime If speed goes above defined threshold Buzzer shall sound to alert you. Rear Passenger Seat Belts Re-minder If Rear Passengers has not fastened seat- belts and if vehicle speed goes above 15 kmph, then final audio warning will go on for around 30 seconds. Seat belt tell-tale light will blink when audio alarm is active
ELECTRICAL 11 G. MAIN CONNECTOR PIN-OUTS FOR 32 PIN CONNECTOR
ELECTRICAL 12 H. FUEL GAUGE DETAILS: Fuel level indication: FUEL VS RESISTANCE TABLE FOR INSTRUMENT CLUSTER HIGH END SEGMENT TANK LEVEL(Lit) RESISTANC E (OHMS) BAR ON RESISTANC E (OHMS) BAR OFF RESISTANC E (OHMS) LOW FUEL WARING TT TOLERANCE(±2 OHMS) SHORT CIRCUIT 5 BLINK @ 2Hz 44.0 6 6 42.0 10 12 22 OFF 5 35.7 24 26 38 OFF 4 29.3 40 42 54 OFF 3 23.0 56 58 74 OFF 2 15.5 76 78 95 OFF 1 8.0 97 99 109 ON ( 2nd bar OFF) 1 BAR BLINK 4.0 111 IGN ON ON 1.5 120 134 OPEN CIRCUIT 135 BLINK @ 2Hz FUEL VS RESISTANCE TABLE FOR INSTRUMENT CLUSTER LOW END SEGMENT TANK LEVEL(Lit) RESISTANCE (OHMS) BAR ON RESISTANCE (OHMS) BAR OFF RESISTANCE (OHMS) LOW FUEL WARING TT TOLERANCE(±2 OHMS) SHORT CIRCUIT 36 ≤ 5 ≤ 5 ≤ 10 BLINK @ 2Hz C1 7 36 8 12 23 Low Fuel Warning TT ON & OFF will be based on LFW threshold table 6 30.5 29 31 42 5 25 49 51 61.2 C2 4 19.7 67 68 75 3 15.5 77 79 88 2 11.3 91 93 98 C3 1 7.2 106 108 118 1 BAR BLINK 3.2 120 120 >133 OPEN CIRCUIT 134 BLINK @ 2Hz
ELECTRICAL 13 I. TEMPERATURE BAR GRAPH DETAILS: Temperature indication: TEMPERATURE CALIBRATION TABLE SR NO EMS2 CLNT Temp Status BAR ON TEMP. (ºC) BAR ON TEMP. (ºC) LED BAR BAR COLOR 1 0 -40 NA 1 WHITE 2 0 85 80 2 WHITE 3 0 90 85 3 WHITE 4 0 110 105 4 WHITE 5 0 120 110 5 RED Input type: CAN Output: LED bar graph in Instrument Cluster high end. Absent in Instrument Cluster low end. ECT TT (Duel Colour) J. CHIME TABLE: Sr. No Feature Default state Priority Instrument Cluster High End 1 Turn Indicator Enabled 20 √ 2 Key In And Driver Door Open Enabled 15 √ 3 Key Out, Park Lights On And Driver Door Open Enabled 16 √ 4 Park Brake Chime Enabled 6 √ 5 High Engine Coolant Temperature Enabled 1 √ 6 Seat Belt Reminder - Driver Enabled 3 √ 7 Speed Limiter – First Level Enabled 8 √ Speed Limiter – Second Level Enabled 7 √ 8 PEPS key not found Enabled 5 √ 9 Drive Mode Chime Enabled 13 √ 10 Reverse Warning Enabled 14 √ 11 DCT Warning Enabled 12 √ 12 Passenger seat Belt reminder Enabled 4 √ 13 ESCL CHIME Enabled 19 √ 14 PLZ Crank / Start The Engine Or ESS Autonomous Start Chime Enabled 17 √ 15 Reverse Gear AMT Enabled 14 16 AMT Fault/Warning Enabled 12 17 BRKACCPEDALSIMU alert Enabled 10 18 Auto-park lock Enabled 13 √
ELECTRICAL 14 K. REMOVAL OF INSTRUMENT CLUSTER: WARNING Remove the key from key barrel. This is necessary to ensure proper initialization of Instrument Cluster Parameters like Odometer value learning from Immobilizer and DTCs in other ECUs against Instrument Cluster. Removing Instrument Cluster with Key IN is strictly prohibited otherwise it will corrupt the odometer value. 1. Remove steering wheel. (Refer “Removal & refitment of steering wheel" from Steering Section.) 2. Remove steering nacelle Lower. (Refer “Removal & Refitment of steering nacelle" from Steering Section.) 3. Lower steering column from top mounting to access lower mounting of Instrument cluster. (Refer Steering section). 4. Remove the mounting screws on the instrument cluster cover. 5. Remove the mounting screws on the instrument cluster. 6. Remove Instrument cluster electrical connections. 7. Remove Instrument cluster REFITMENT Follow the procedure in reverse order for fitment. WARNING Swapping to analyze cluster defect: It is strictly prohibited to swap clusters for defect analysis from vehicles or from available stock. Due to immobilizer Odometer learning strategy, cluster odometer value will change permanently to a higher value. For defect analysis, use Diagnostics Tool or ETC (Engineering Test MODE.
ELECTRICAL 15 2. SWITCHES A. PASSENGER AIRBAG (PAB) SWITCH Passenger Airbag switch is used to activate and de-activate the passenger Airbag in the Vehicle. The Switch located on the left side of the dashboard. This switch can be accessed once the co-driver side door is opened. PAB Switch ON: When an adult is seated in the front passenger seat, ensure that PAB switch is turned to ‘ON’ position. This will ensure that the passenger airbag is operational in the event of a collision. PAB Switch OFF: If it required to fit a child restraint on the front passenger seat, ensure that PAB switch is turned to ‘OFF’ position. This will ensure that the passenger airbag must be deactivated. This switch can be operated by using ignition /Remote Key. Location CONNECTOR DETAILS PIN NO DESCRIPTION 1 Feed (From Airbag) 2 On state LED in PAB Indicator 3 Return (To Airbag ECU) 4 Ground Switch Schematic
ELECTRICAL 16 REMOVAL 1. Remove the left side cover of the dashboard. 2. Remove switch wiring Harness connector. 3. Remove the Switch. RE-FITMENT 1. Replace the new switch. 2. Connect Vehicle side switch connector. 3. Press and snap fit the switch. 4. Refit the left side cover of dashboard. B. PASSENGER AIRBAG (PAB) INDICATOR Passenger Airbag operational status indicator is used to notify occupant whether Passenger Airbag is activated (ON) or deactivated (OFF) in vehicle. PAB indicator is located on roof panel near inner rear view mirror. PAB Indicator ON: When the PAB switch is turned to ‘ON’ position to activate the airbag, ‘ON symbol & text’ will illuminate in amber color. PAB Indicator OFF: When the PAB switch is turned to ‘OFF’ position to deactivate the airbag, ‘OFF symbol & text’ will illuminate in amber color.
ELECTRICAL 17 PAB Indicator on Ignition OFF. Location CONNECTOR DETAILS PIN NO DESCRIPTION 1 PAB Switch 2 ECU 3 Ignition Supply 4 Ground Switch Schematic REMOVAL 1. Remove Overhead console Bezel. 2. Remove PAB indicator wiring Harness connector. 3. Remove the Switch. RE-FITMENT 1. Replace the new indicator.
ELECTRICAL 18 2. Connect Vehicle side switch connector. 3. Press and snap fit the switch. 4. Refit the overhead console Bezel
ELECTRICAL 19 3. FUSE AND RELAY BOX DETAILS CHECKING FUSES If any electrical unit in the vehicle has stopped functioning, fuses should be checked first. A blade type fuse has test taps provided to allow checking of the fuse itself without removing it from the fuse block. The fuse is okay if the test light comes on when its one lead is connected to the test taps (one at a time) and the other lead of the test light is grounded. Remember to turn the ignition switch to ON to ensure all circuits are live. CAUTIONS IN EVENT OF BLOWN FUSE When a fuse is blown, there are two probable causes. One is that it is blown due to flow of current exceeding its rating. The other is that it is blown due to repeated on/off current flowing through it. Which of these two causes were responsible for the fuse to be blown can be determined by visual check as described below. 1. Fuse blown due to current exceeding rating The illustration shows the state of a fuse blown due to this cause. In this case, do not replace the fuse with a new one quickly since a current heavy enough to blow the fuse has flowed through it. First, check the circuit for shorts and check for abnormal electric parts. After correcting shorts or replacing parts, use only a fuse of the same capacity as a replacement. Never use a fuse of larger capacity than the original fuse. If a larger capacity fuse is used, electric parts or wiring could be damaged, or could start a fire. 2. Fuse blown due to repeated turning current on and off: The illustration shows the state of a fuse blown due to repeated current on/off. Normally, this type of problem occurs after a fairly long period of use and is less frequent than above. In this case, simply replace with a new fuse of the same capacity. CHECKING RELAYS 1. By using a relay, a heavy current can be turned on and off by a switch using much less current. For example, in the circuit shown here, when the switch is turned on (closed), current flows to the coil of the relay. Then, its contact is turned on (closed) and the light comes on. The current flowing through the switch is much less than that for the light. 2. Relays may be classified as the normally opentype or the normally closed-type, depending on their contact construction. NOTE: The De-energized state means that no current is flowing through the coil. The energized state means that current is flowing through the coil.
ELECTRICAL 20 (a) The normally open-type When a normally open relay as illustrated here is checked, there should be no continuity between terminals 30 and 87 when the relay is deenergized. There should be continuity between terminals 30 and 87 when battery voltage and ground are applied to terminals 85 and 86. The relay condition is determined by this check. NOTE Check the relay in both condition, i.e. energized and not energized (b) The normally closed-type When a normally closed relay as illustrated here is checked, there should be continuity between terminals 30 and 87 when the relay is deenergized. There should be no continuity between terminals 30 and 87 when battery voltage and ground are applied to terminals 85 and 86. The relay condition is determined by this check. NOTE: Check the relay in both conditions, i.e. Energized and not energized. (c) The NO NC (Changeover) type It has 2 relay out pins. One will be in contact in the changeover state as in NC relay. When it is energized it brakes the NC contact and connect the other output pins. A. FUSE AND RELAY BOX LAYOUT 1. FUSE AND RELAY BOX DETAILS A. BATTERY MOUNTED FUSE BOX (BDU) FUSE DETAIL FUSE NO. FUNCTION FUSE RATING F01 STARTER MOTOR 200 A This fuse box is directly mounted on battery positive terminal. Bus-bar type construction is used. WARNING If Fuse box cover is removed for any reason, it should be refitted properly at its original position.
ELECTRICAL 21 B. ENGINE FUSE AND RELAY BOX
ELECTRICAL 22 SR NO FUNCTION RATING F0 - - F1 COCKPIT F/B SUPPLY 60A F2 RADIATOR FAN-1 40A F3 STARTER SOLENOID BATT 25A F4 HEAD LAMP HIGH BEAM 15A F5 FUEL PUMP BATT 15A F6 HEAD LAMP LOW BEAM 15A F7 TCU BATTERY 2 10A F8 - - F9 TCU 30A F10 EPAS 60A F11 - - F12 UNDER BONNET F/R BOX 50A F13 EMS BATT 10A F14 COMPRESSOR 10A F15 ABS ECU BATT 25A F16 HORN BATT 15A F17 BRAKE LAMP BATT 10A F18 ABS PUMP 40A F19 INTERIOR F/B BATT 60A F20 IGNITION LOAD 60A F21 IGNITION COIL 15A F22 - - F23 - - F24 ABS ECU IGNITION 5A F25 AMT IGN 10A F26 EMS CNG INJECTOR 10A F27 EMS RELAY COILS & SENSORS 15A F28 EMS ECU SUPPLY 20A F29 EMS INJECTOR 10A F30 FRONT WIPER MOTOR 20A F31 REAR WIPER 10A F32 STARTER MOTOR F/B 5A F33 - - F34 CNG PRESSURE REGULATOR SOL. 5A F35 REVERSE LAMPS/BRAKE SWITCH 10A F36 - - F37 - - F38 - -
ELECTRICAL 23 SR NO FUNCTION RATING R1 IGNITION RELAY 40A R2 EMS RELAY 40A R3 RADIATOR FAN FAST RLY-1 40A R4 - - R5 - - R6 FRONT WIPER RLY 20A R7 RADIATOR FAN SLOW RLY 20A R8 INT. WIPER ON/OFF RLY 20A R9 REAR WIPER RLY 20A R10 DUAL HORN RLY 20A R11 HEAD LAMP LOW RLY 20A R12 HEAD LAMP HIGH RLY 20A R13 STARTER RLY-1 20A R14 STARTER RLY-2 20A R15 AC CLUTCH RLY 20A R16 FUEL PUMP RLY 20A R17 - - R18 R19 REVERSE LAMP RELAY 20A
ELECTRICAL 24 FUSE AND RELAY REPLACEMNET: 1.Remove the cover of the fuse box. 2.Take out the fuse or relay from its base. 3.Check the Fuse/relay. 4.If faulty replace with same ratting of fuse and relay. REMOVAL 1.Remove the Battery. (Refer battery removal process). 2.Remove the top cover of fuse box. 3.Remove the three mounting bolt of the fuse frame assembly. 4.Gently pull out the fuse frame and disconnect all the electrical connections.
ELECTRICAL 25 C. CABIN FUSE AND RELAY BOX This fuse box is part of main wiring harness. For details refer the below fuse box sticker fitted on steering column lower cover. For other pin out details of fuse box refer the power distribution II circuit schematics. LOCATION
ELECTRICAL 26 CABIN FUSE AND RELAY BOX DETAILS
ELECTRICAL 27 SR NO FUNCTION RATING F1 CLUSTER 5A F2 BLOWER MOTOR 30A F3 PEPS/ESCL ECU-BATT 10A F4 HEATED REAR SCREEN BCM 25A F5 BCM2- BASE/MID BCM 20A F6 WW ANTI-PINTCH 25A F7 RPAS/TELEMATICS IGN 5A F8 IGN FUSE-2 10A F9 IMMOB/EPAS/PEPS-IGN 5A F10 HVAC/ FATC 10A F11 RESTRAINTS CONTROL 10A F12 ACC BATT/OBD 15A F13 TRANSIST/INFOTAINMENT 20A F14 TAILGATE RELEASE 10A F15 CDL 15A F16 BCM3-MID BCM 20A F17 RELAY COILS 5A F18 IMMO BATT 5A F19 BCM1-MID BCM 20A F20 PEPS/BLOWER RLY 5A ACCESSORIES FUSE F21 REAR USB A TYPE 5A F22 MIRROR ADJUST MOTOR 5A F23 POWER SOCKET-1/2 15A F24 TELEMATICS BATT 5A KEY IN F25 F26 SUNROOF 20A F27 FRONT USB C TYPE 5A F30 REAR WIPER 10A SR NO FUNCTION RATING C115-B1 BUZZER NA C115-B2 HRW RLY 20A C115-C BLOWER MOTOR RLY 40A C115-E CDL LOCK RLY 20A IGN RLY 20A C115-F CDL UNLOCK RLY 20A TAILGATE LATCH RLY 20A C115-J ACC RELAY-1 40A C115-M1 REAR WIPER RLY 20A C115-M2 WW. SIGNAL INV. RLY 20A
ELECTRICAL 28 FUSE AND RELAY REPLACEMENT 1. Pry out the fuse box cover on the dashboard panel. 2. Take out the fuse and relay from its base. 3. Check the Fuse/relay. 4. If faulty, replace with same ratting of fuse and relay. REPLACEMENT PROCEDURE FOR RELAYS 1. Turn the ignition key to lock position. 2. Check each relay, if faulty replace with same rating relay. 3. If replaced relay of same rating is not working properly, there is probably a serious electrical problem. REPLACEMENT PROCEDURE FOR FUSES 1. Turn the ignition key to lock position. 2. Check each fuse and look for broken/open controls link wire inside the fuse. If it is burnt, replace it with one of the spare fuses of same rating. 3. If replaced fuse of same rating burns out then, there is probably a serious electrical problem. Note: Use designated fuses only.
BODY BODY
BODY TABLE OF CONTENTS 1 FRONT SEAT ..................................................................................................................... 1 2 REAR SEAT ........................................................................................................................ 2 3. ISOFIX ............................................................................................................................... 2 4 FRONT SCUFF PLATE....................................................................................................... 4 5 “A” PILLER TRIM ................................................................................................................ 8 6 “B” PILLER TRIM ................................................................................................................ 5 7 “C” PILLER TRIM ................................................................................................................ 6
BODY 1 1. FRONT SEAT REMOVAL 1. Slide the front seat backwards and remove the two front mounting screw. 2. Slide the front seat forward and remove the rear mounting screw. 3. Detach seat belt buckle reminder sensor from vehicle wiring harness. 4. Remove the front Seat. FITMENT 1. Locate the front seat assembly in BIW using Locating Pin. 2. Front mounting is pre-tightened i.e after tightening rear mountings, it is tightened. 3. Slide the front seat forward most position. 4. Connect seat belt buckle reminder sensor to the vehicle wiring harness. 5. Fix the seat assembly at rear by tightening three mounting screws.
BODY 2 2. REAR ROW SEAT REMOVAL 1. Press Rear Seat back lock. 2. Remove the rear seat mountings on hinge plate LH & RH side. 3. Remove the cushion locking hook. 4. Fold the seat backrest. 5. Remove Rear Seat. NOTE Lift the belts and buckle while cushion folding to design position. 3. ISOFIX REMOVAL (if Applicable) 1. Remove Rear row seat (Refer rear removal procedure). 2. Remove ISOFIX mounting Hex FL screws. FITMENT OF ISOFIX: 1. Mount the ISOFIX assembly OB bracket to BIW by loose tightening of bolt. 2. Mount the ISOFIX side bracket to B piller by tightening bolt.
BODY 3 3. Mount the ISOFIX assembly IB side bracket to BIW 4. Tighten the all 4 bolts with specific mention torque. (Refer torque table). 5. Repeat same procedure for LH side ISOFIX. FITMENT OF REAR ROW SEAT 1. Fix the ISOFIX assembly (Refer ISOFIX fitment procedure) (if applicable). 2. Orient cushion assembly on ISOFIX assembly wires & mount the cushion fixing hook to BIW clips. NOTE Lift the belts and buckle while cushion folding to design position. 3. Assemble the back pivot bracket assembly LH & RH to vehicle by nut. 4. Assemble the back assembly to LH & RH pivot bracket. 5. Rotate back assembly backward to engage shoulder latches to striker rod from vehicle.
BODY 4 4. FRONT SCUFF PLATE REMOVAL 1. Pull out front scuff plate from its location. FITMENT Follow the reverse procedure of Removal. 5. “A” PILLAR TRIM: • “A” PILLAR UPPER TRIM REMOVAL 1. Remove door beading at A Pillar trim location. 2. Pull A Pillar trim from upper locater. 3. Disconnect electrical connection on twitter & take out A Pillar Assembly. 4. Remove A pillar trim. FITMENT For fitment follow reverse procedure of removal.
BODY 5 • “A” PILLAR LOWER TRIM REMOVAL 1. Remove door beading and Pull lower trim gently. 2. Pull out Front Scuff plate. 3. Pull out A Pillar lower trim. FITMENT For fitment follow reverse procedure of removal. 6. “B” PILLAR TRIMS REMOVAL 1. Remove door Beading. 2. Fold front row seat. 3. Open Doors & Pull out front & rear scuff plate. 4. Pull out B-Pillar lower trim. 5. Pull out cap. 6. Remove the top anchorage mounting bolt on seat belt.
BODY 6 7. Remove fastener and pull out B Pillar upper trim. FITMENT For fitment follow reverse procedure of removal. 7. “C” PILLAR TRIMS REMOVAL 1. Remove parcel shelf. 2. Remove Tailgate Side inner Beading. 3. Remove Rear Door Beadings at rear quarter location. 4. Remove rear seat backrest. (For removal process refer rear seat removal process). 5. Remove rear seat belt bottom mounting fastener. 6. Pull out rear scuff plate. 7. Remove the mounting screw & pullout C pillar lower trim.
BODY 7 8. Remove C pillar upper trim. FITMENT For fitment follow reverse procedure of removal.
SRS SRS
TABLE OF CONTENTS 1. WORKING OF RESTRAINTS....................................................................................................................1 2. SYSTEM LAYOUT......................................................................................................................................3 3. SAFETY PRECAUTIONS...........................................................................................................................5 4. DISPOSAL OF FAULTY AIR BAG UNIT....................................................................................................7 5. SRS POST ACCIDENT PROCEDURE ......................................................................................................9 6. TIGHTENING TORQUES.........................................................................................................................10 7. COMPONENTS ........................................................................................................................................14 A. RESTRAINT WITHOUT AIRBAGS.....................................................................................................14 B. RESTRAINT WITH AIRBAGS ............................................................................................................14 ECU..............................................................................................................................................14 I. FRONT IMPACT SENSOR (FIS).................................................................................................19 II. SIDE IMPACT SENSOR .............................................................................................................20 III. AIR BAGS....................................................................................................................................22 IV. V. FRONT SEAT (DRIVER) BELT BUCKLE.....................................................................................26 VI. RPLL BELTS................................................................................................................................26 CLOCK SPRING ........................................................................................................................29 VII. SRS
1. WORKING OF RESTRAINTS RESTRAINTS WITH AIRBAGS This restraint system falls under the category of Supplementary restraint system. SUPPLEMENTARY RESTRAINT SYSTEM (SRS) Air bags are the secondary restraint system as for the activation of air bag no action is required by the vehicle occupant. WARNING Every occupant shall wear seat belts whenever they drive a vehicle. This is applicable whether a vehicle is equipped with supplementary restraints systems (SRS) or not. WORKING OF SRS Whenever there is an accident, the sensor mounted remotely sends crash signal to the ECU. The type of accident and its severity, determines the time-to-fire different airbags in the system. The basic function of an airbag is to provide cushioning effect to occupants. There are remote sensors mounted for sensing different frontal and side accidents. These sensors are connected to the electronic control unit (ECU) of the system. If the input signal during the event of accident crosses the predefined threshold level in ECU, the ECU triggers the relevant restraints components in the system. This helps in providing necessary protection to occupants. The airbags and seat belt pre-tensioners are triggered through ECU signal. The load limiter in the seat belts is a mechanical device which is activated when the forces on the occupant upper body region crosses a defined force threshold limit. COMPONENTS 1. ECU 2. Front Remote Sensing Unit 3. Side Remote Sensing Unit 4. Air bags Driver Airbag • Passenger Airbag • Side Airbag • Curtain Airbag • 5. RPLL 6. ELR+LL 7. Clock spring 8. Airbag warning lamp 9. Airbag warning labels 10. Micro switch (inside seat belt buckle) SRS 1
SRS COMPONENTS SYSTEM SRS 2
2. SYSTEM LAYOUT RESTRAINT SYSTEM WITH AIRBAG This Vehicle is equipped with 3 loops of Air bag systems. The layouts of this loop is given below. DRIVER AIRBAG MODULE (DAB) • Fitted on the steering wheel with a horn pad having tear seams. PASSENGER AIRBAG MODULE (PAB) • Integrated type, rigidly attached to cross member with dashboard visible surface having tear seams in the area covered by the PAB module. SIDE AIRBAG • In the vehicle, Side Airbags are installed inside the front seats of the vehicle. CURTAIN AIRBAG • In the vehicle, curtain Airbags are folded and installed behind roof headliner on both sides of the vehicle. SRS CONTROL UNIT • Fitted on the floor tunnel along the centre line of the vehicle under the center console. AIRBAG WARNING LAMP • Fitted inside instrument cluster. RPLL AND ELR + LL CONFIGURATION • BELTS Fitted inside B pillar - RH side Retractor Pretensioner and Load Limiter (RPLL) & for LH side Emergency Locking Retractor + Load Limiter (ELR+LL). SRS 3
OCCUPANT DETECTION SENSOR(ODS) • Occupant Detection sensor (ODS) detects occupant in passenger seat. This information is then used by a seat belt reminder system in the vehicle to trigger a warning light and/or an audible chime reminding unbuckled seat occupants to fasten their seat belts. FRONT IMPACT SENSOR(FIS) (RH & LH) • These sensors are mounted on vertical members of front-end module on the both side i.e. RH & LH. SIDE IMPACT SENSOR(FIS) (RH & LH) • These sensors are mounted on side “B” pillar at the bottom end. SRS 4
3. SAFETY PRECAUTIONS The SRS system contains components, which could be potentially hazardous to the technician if not serviced and handled correctly. The following guidelines are intended to alert the technician to potential sources of danger and emphasize the importance of ensuring good condition of SRS components fitted to the vehicle. It should be noted that these precautions are not restricted to operations performed when servicing the SRS system; the same care should be exercised when working on ancillary systems and components located in the vicinity of the SRS components; these include but are not limited to: Steering system – (steering wheel airbag) • Body, seats and trim components – (Passenger • airbag, seatbelt pre-tensioners, SRS ECU, front impact sensing unit). Electrical system components (SRS • harnesses) GENERAL PRECAUTIONS The following precautions have to be taken while working on SRS system. 1. When removing, testing or installing an airbag module, do not lean directly over it. Always refer SRS component testing precautions. 2. In order to assure system integrity, it is essential that the SRS system is regularly check and maintain so that it is ready for effective operation in the event of a collision. Carefully inspect SRS components before installation. Do not install a part that shows signs of being dropped or improperly handled, such as dents, cracks or deformation. Dropped modules may get damaged. In such cases contact the supplier for further action. 3. Ensure SRS components are not contaminated with oil, grease, detergent or water. It is essential that SRS components are fitted using the recommended torques. NOTE DTC’S (Diagnostic Trouble Codes) are the most important source of information when troubleshooting. When troubleshooting the SRS, always inspect DTC’S before disconnecting the battery. WARNING The airbag modules contain extremely flammable components. Contact with water, acid or heavy metals may produce harmful or explosive compounds. Do not dismantle burn or bring into contact with electricity. Do not expose an airbag module or seatbelt pretensioner to heat. The inflator is intend not to fire below the threshold current. To avoid inadvertent triggering of the airbag, NEVER apply a current through the squib except with the specified test equipment and procedures. Never dispose the airbag module un-deployed without proper instructions as this may result in possible injury. All deployments must follow special safety instructions. All units should be activate (deployed) prior to disposal. The airbag modules or their components must not be adapted or installed in any other vehicle other than the specific vehicle for which they are designed and manufactured. Any attempt to adapt or install airbag modules or their components in any other vehicle can result in personal injury to the occupants in the event of accidents. The system has back-up power for about 30 seconds after the battery is disconnected. Wait for at least ONE minute after disconnecting the battery before servicing the vehicle to prevent accidental deployment and personal injury. SRS 5
4. Do not install used SRS components from another vehicle. When replacing SRS system, only use TATA authorized genuine new parts. 5. It is essential that SRS components are fitted using the recommended torques. Always use specified earth fixings tightened to the correct torque. Poor earthing can cause intermittent problems that are difficult to diagnose. 6. Do not cut, drill, braze or solder the Airbag gas generator assembly. 7. Do not allow the air bag module assemblies to come into contact with electrical current. 8. Never hammer on any SRS component - it might get damaged internally. 9. Do not carry the airbag or pre-tensioner module, with the cable assembly connected - long cables can pick up Electrostatic Charge particularly if dragged on the floor and could lead to deployment of airbag. Do not attempt to refold the bag into the cover. 10. Deployment protection may be compromise or injury may be induce. This is because foreign objects could enter the bag, or the vehicle specific bag-folding pattern could be alter from its original optimized design. Prior to commencing any test procedure on the 11. vehicle, ensure that only test equipment approved for the purpose is being utilized and that it is in good working order. Ensure any harness or connectors are in good condition and any warning lamps are fully functional. Do not keep a live airbag module with the 12. deployment side faced down. Place the Airbag modules such that the deployment side should be placed facing upwards and away from any loose parts. Only use the diagnostic tool to probe faults in 13. the Airbag system, neveruse electrical probing instruments like Multimeter as the probing current may deploy the airbag. Never attach anything to the airbag cover or 14. allow anything to rest on top of the airbag module. Always store airbag module in a dry, cool and 15. secured area. Never attempt to modify any splice or repair 16. SRS wiring harness. Always ensure that the airbag wiring is routed 17. correctly. Be careful to avoid trapping or pinching the airbag wiring. Look for possible points of chafing. Ensure all airbag harness connectors are 18. mated correctly and securely fastened. Do not leave the connectors hanging loose or allow SRS components to hang from their harnesses. Grease should not be applied to the steering 19. wheel pad and the pad should not be cleaned with detergents of any kind. When using electric welding, first disconnect 20. all the airbag connectors,ECU and sensors. If such activities are to be conducted near SRS component, then remove those components also. SRS 6
4. DISPOSAL OF FAULTY AIR BAG UNIT Airbags that have not been safely deployed can cause severe injury to humans & significant damage to equipment. If special handling procedures are follow, the airbags can be safely deploy & then all component parts can be properly recycled. DISPOSAL PROCEDURE 1. Follow the guidelines for removal of AIR BAG module assembly as specified in workshop manual. If the module assembly is found defective before fitment on the vehicle, go to step 2. 2.Wear adequate ear protection device (earplugs), safety goggles and safety hand gloves. 3. Connect the specified connector to the restraints module assembly, with a pigtail. 4. Clamp the restraints module assembly in a shop bench vise (or equivalent clamping mechanism). The clamping force should be adequate. 5. refer the following methods for clamping the different air bag modules on bench vise. DRIVER AIR BAG (DAB) • The steering wheel should be clamped in such a way that the DAB module should face upwards. PASSENGER AIRBAG • Airbag mounting bracket (located on Cross Car Beam) used for mounting module on bench vice. SEAT BELT (PRE-TENSIONER) • Seat belt assembly can be directly held in bench vice. Seat belt webbing length could be cut prior to deployment. NOTE The disposal of AIR BAG module assembly shall be done in an area with adequate ventilation. A person handling any restraints module assembly shall have to wear ESD (electro-static discharge) straps to reduce any risk of inadvertent deployment. SRS 7
Use a 2 core electrical wire at least 15m • long. Use a short link at one end of the wire and then connect the other end to the module pigtail. 6. Place a vehicle battery or equivalent source at a distance of 15m from the restraints module assembly. The battery voltage shall be in the range of 8-16V. 7. Remove the short link before applying the voltage source. 8. Connect one core of the electrical wire to the positive (+ve) battery terminal. do not connect the other core with negative (-ve) battery terminal. 9. Make sure that no person is present within 15m radius of the “to be disposed” module assembly. Connect the other core of the electrical wire 10. with the negative (-ve) battery terminal for deployment of module assembly. After deployment, wait for at least 10 minutes 11. to ensure that none of the components within the module assembly is too hot. Take out the deployed module assembly from 12. bench vice and conduct suitable activities towards scrapping of the constituent components. Airbag module assemblies are generally made up of aluminum, stainless steel or mild steel, nylon, plastic etc. After the module assembly is removed from bench vise, the constituent components could be scrape as per the guidelines/laws for non-hazardous waste materials. SRS 8
5. SRS POST ACCIDENT PROCEDURE The complete airbag system consists of • following components. Those cannot be serviced/repaired, hence should be replaced in case of any damage/deployment irrespective of ‘if found ok’. Driver airbag • Passenger airbag • Side airbag • Curtain airbag • Seat belt assembly • Front impact sensors • Wiring harnesses • SRS ECU • Clock spring • If Frontal Airbags, seat belt pretensioners • are deployed during collision, following components must be replaced irrespective of ‘if found ok’. Driver airbag • Driver Anchor Pretensioner • Passenger airbag • Side airbag • Curtain airbag • Front Seat belt assembly RH & LH • Front Impact sensors -LH & RH • Cockpit (with PAB provision & wiring • harness) Wiring harness • SRS ECU • Clock spring • After any type of vehicle accident, thoroughly • inspect all the airbag system components for any damage or deformation. Replace components as required. Thorough inspection of their mounting locations is also strongly recommend after any accident. If any damage or deformation is observe on any • airbag system components, these components MUST be replaced even if they are not deployed/ fired in the accident and are showing healthy status when checked. Special attention should be paid to mounting • surfaces and mounting brackets mainly for SRS ECU, Front impact sensors, as they are extremely critical for performance of the system. If these cannot be repair to their original condition, the original panel(s) MUST be replace. In case of damage to SRS wiring • harness/wires, they must not be repair but replace. If steering wheel and steering column are • deformed or if the steering column is collapsed in an accident, replace these components. The accident Vehicle should be inspect to • identify component deformation or structural deformations, damages for repair or replacement. E.g. Vehicle front, side, rear structure, seats, underbody components etc. Check for DTC’s using diagnostic tool and • troubleshoot to clear all the DTC’s detected. WARNING ‘If the SRS warning indicator in the instrument cluster illuminates continuously, it means there is a malfunction in the system, vehicle needs to be diagnosed then take the vehicle to nearest TATA Authorized Service Center’ SRS 9
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