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NANO ePAS
1

1. GENERAL
7

1.1 AN OVERVIEW - NANO
15

1.2 ABBREVIATIONS
16

1.3 LIFTING, JACKING, TOWING POINTS
19

1.4 TIGHTENING TORQUES OF STANDARD BOLTS AND NUTS
22

1.5 AGGREGATE NUMBERING SYSTEM
23

1.6 TECHNICAL SPECIFICATIONS
26

1.7 VEHICLE DIMENSIONS
28

1.8 FUEL, LUBRICANTS & COOLANTS
29

1.9 SERVICE SCHEDULE
32

2. PRECAUTIONS
35

2.1 GENERAL SAFETY PRECAUTIONS
41

2.2 GENERAL SERVICE PRECAUTIONS
45

3. ENGINE
47

3.1 GENERAL INFORMATION
55

TECHNICAL SPECIFICATIONS
57

FEATURES OF 273 MPFI ENGINE
58

TIGHTENING TORQUE
59

SPECIAL TOOLS & EQUIPMENTS
61

GENERAL SYMPTOMS & DIAGNOSTICS
65

3.2 ON VEHICLE PROCEDURES
69

IMPORTANT ON VEHICLE MAINTENANCE PROCEDURES
71

ENGINE OIL REPLACEMENT
73

OIL FILTER REPLACEMENT
74

AIR FILTER ELEMENT CLEANING AND REPLACEMENT
75

FUEL FILTER REPLACEMENT
76

TAPPET SETTING
77

ALTERNATOR BELT - REMOVAL & REFITMENT PROCEDURE
78

COMPRESSOR BELT - REMOVAL & REFITMENT PROCEDURE
79

TIMING BELT - REMOVAL & REFITMENT PROCEDURE
81

CYLINDER HEAD - REMOVAL & REFITMENT PROCEDURE
86

COMPRESSION PRESSURE CHECKING PROCEDURE
89

3.3 ENGINE MECHANICAL
91

PRELIMINARY INSPECTION OF ENGINE
93

REMOVAL OF ENGINE FROM VEHICLE
95

3.3.1 CYLINDER HEAD
99

GENERAL DESCRIPTION
101

EXPLODED VIEW
102

CYLINDER HEAD OVERHAUL
104

CYLINDER HEAD REMOVAL FROM ENGINE BLOCK
104

DISMANTLING OF CYLINDER HEAD SUBASSEMBLIES
108

INSPECTION & REPAIR DATA
111

ASSEMBLY OF CYLINDER HEAD SUBASSEMBLIES
118

3.3.2 ENGINE BLOCK
123

GENERAL DESCRIPTION
125

EXPLODED VIEW
126

ENGINE BLOCK OVERHAUL
128

DISMANTLING OF ENGINE BLOCK SUBASSEMBLIES
128

INSPECTION & REPAIR DATA
133

ASSEMBLY OF ENGINE BLOCK SUBASSEMBLIES
143

REFITMENT OF ENGINE ACCESSORIES
156

ENGINE TESTING
158

INSTALLATION OF ENGINE ON VEHICLE
158

3.4 ACCELERATOR
159

EXPLODED VIEWS & CABLE ROUTING
161

SYSTEM MAINTENANCE
163

3.5 COOLING SYSTEM
167

GENERAL DESCRIPTION
169

SYSTEM SCHEMATICS
169

EXPLODED VIEWS
170

SPECIFICATIONS
172

SYSTEM COMPONENTS
173

SYSTEM MAINTENANCE
174

3.6 LUBRICATION SYSTEM
183

GENERAL DESCRIPTION
185

SYSTEM SCHEMATICS
185

SPECIFICATIONS
186

SYSTEM MAINTENANCE
187

3.7 FUEL SYSTEM
199

GENERAL DESCRIPTION
201

SYSTEM SCHEMATICS
201

EXPLODED VIEWS
202

PRECAUTIONS, SPECIFICATIONS AND TIGHTENING TORQUE
203

SYSTEM COMPONENTS
204

SYSTEM MAINTENANCE
208

EVAPORATIVE EMISSION CONTROL SYSTEM
218

3.8 INTAKE SYSTEM
221

GENERAL DESCRIPTION
223

EXPLODED VIEWS
224

SYSTEM MAINTENANCE
225

3.9 EXHAUST SYSTEM
231

GENERAL DESCRIPTION
233

EXPLODED VIEWS
234

TIGHTENING TORQUE
235

SYSTEM COMPONENTS
236

SYSTEM MAINTENANCE
238

3.10 IGNITION SYSTEM
243

GENERAL DESCRIPTION
245

SYSTEM SCHEMATICS
245

SYSTEM MAINTENANCE
246

3.11 ENGINE MANAGEMENT SYSTEM
251

ABBREVIATIONS
253

AN OVERVIEW
254

3.11.1 ECU (ELECTRONIC CONTROL UNIT)
255

ECU BLOCK DIAGRAM
256

ECU PIN ASSIGNMENT DETAILS
257

ECU HANDLING AND CARE
258

ECU ON VEHICLE REMOVAL, INSPECTION AND REFITMENT PROCEDURE
259

3.11.2 SENSORS
260

CRANK SHAFT POSITION SENSOR
260

COOLANT TEMPERATURE SENSOR
261

T-MAP SENSOR
263

KNOCK SENSOR
264

THROTTLE POSITION SENSOR
265

LAMBDA (OXYGEN) SENSOR
268

VEHICLE SPEED SENSOR
269

3.11.3 ACTUATORS
271

CANISTER PURGE VALVE
271

FUEL INJECTOR
272

IGNITION COIL
274

INTAKE AIR CONTROL VALVE (IACV)
277

COMPONENT FITMENT DATA
279

3.11.4 DTC (DIAGNOSTIC TROUBLE CODE)
283

DTC LIST
283

LAPTOP BASED DIAGNOSTIC TESTER
293

BLINK CODE
308

3.11.5 TROUBLE SHOOTING AND DIAGNOSIS
310

REPAIRING STEPS
310

VEHICLE TROUBLE SHOOTING FLOW CHART
311

SENSOR AND ACTUATOR TESTING
312

EMERGENCY SERVICE TIPS
314

4. DRIVETRAIN
315

4.1 CLUTCH
321

4.1.1 GENERAL INFORMATION
323

TECHNICAL SPECIFICATIONS
323

CONSTRUCTION
326

PRECAUTIONS
328

TIGHTENING TORQUES
329

SPECIAL TOOLS
330

GENERAL SYMPTOMS AND DIAGNOSIS
331

TROUBLE SHOOTING
334

MAINTENANCE AND REPAIR
335

A. PRELIMINARY INSPECTION
335

B. CLUTCH SLIPPAGE TEST
335

C. CLUTCH ENGAGEMENT AND DISENGAGEMENT TEST
335

D. CLUTCH PEDAL PLAY ADJUSTMENT
335

E. CLUTCH PEDAL FREE PLAY ADJUSTMENT
336

4.1.2 OVERHAUL
337

EXPLODED VIEWS
337

A. REPLACEMENT OF CLUTCH DISC AND CLUTCH COVER
340

B. CLUTCH ACTUATION MECHANISM OVERHAUL
341

C. CLUTCH CABLE REPLACEMENT
344

4.2 TRANSAXLE TA-59
347

4.2.1 GENERAL INFORMATION
349

TECHNICAL SPECIFICATION
349

CONSTRUCTION
349

PRECAUTIONS
350

TIGHTENING TORQUES
351

SPECIAL TOOLS
354

GENERAL SYMPTOMS AND DIAGNOSIS
358

TRANSAXLE OIL REPLACEMENT
359

4.2.2 OVERHAUL
360

EXPLODED VIEWS
360

COMPONENT IDENTIFICATION
367

PRECAUTIONS
369

REMOVAL OF TRANSAXLE FROM VEHICLE
369

TRANSAXLE DISMANTLING
372

INPUT SHAFT ASSEMBLY
376

LAY SHAFT ASSEMBLY
381

SHIFTER SHAFT AND SHIFTER FORK
387

DIFFERENTIAL ASSEMBLY
390

REAR HALF HOUSING TOP COVER ASSEMBLY
394

REAR HALF HOUSING ASSEMBLY
400

FRONT HALF HOUSING
402

TRANSAXLE ASSEMBLY
404

A. SHIM SELECTION
404

B. ASSEMBLING THE TRANSAXLE
405

GEAR SHIFTER LINKAGE
409

A. GEAR SHIFTER CABLE REPLACEMENT
409

B. GEAR SHIFTER ADJUSTMENT
410

4.3 DRIVESHAFT
411

4.3.1 GENERAL INFORMATION
413

TIGHTENING TORQUE
413

SPECIAL TOOL
414

CONSTRUCTIONAL DETAILS
415

EXPLODED VIEW - DRIVESHAFT
415

COMPONENT DESCRIPTION
416

TROUBLESHOOTING AND DIAGNOSIS
417

4.3.2 ON VEHICLE REPAIRS
418

PRECAUTIONS
418

REMOVAL FROM VEHICLE
420

DRIVESHAFT DISMANTLING / ASSEMBLY
423

5. SUSPENSION SYSTEM
429

5.1 GENERAL INFORMATION
435

TECHNICAL SPECIFICATIONS
435

TIGHTENING TORQUES
436

SPECIAL TOOLS
439

LAY OUT OF FRONT SUSPENSION SYSTEM
441

LAY OUT OF REAR SUSPENSION SYSTEM
442

MAINTENANCE AND INSPECTION OF SUSPENSION SYSTEM
443

TROUBLESHOOTING AND DIAGNOSIS
446

5.2 ON VEHICLE REPAIRS
449

FRONT SUSPENSION COMPONENTS
449

STRUT
449

ANTI-ROLL BAR
455

LOWER ARM
456

WHEEL BEARING
458

REAR SUSPENSION COMPONENTS
461

SHOCK ABSORBER
462

COIL SPRING
463

BUMP STOPPER AND SPRING UPPER SEAT
464

SEMI TRAILING ARM
465

WHEEL HUB AND WHEEL BEARING
468

5.3 WHEELS AND TYRES
473

5.3.1 GENERAL INFORMATION
473

TECHNICAL SPECIFICATIONS
473

TIGHTENING TORQUE
474

EXPLODED VIEW
475

MAINTENANCE AND INSPECTION OF TYRE/WHEEL ASSEMBLY
476

5.3.2 ON VEHICLE REPAIRS
477

WHEEL REMOVAL FROM VEHICLE (ON HOIST)
478

WHEEL REMOVAL FROM VEHICLE (WITH JACK)
479

WHEEL BALANCING
480

WHEEL RUNOUT
481

TYRE REPLACEMENT
482

WHEEL ASSEMBLY REPLACEMENT
483

REPAIRING TUBELESS TYRE PUNCTURE
483

TYRE DIAGNOSIS
484

6. BRAKE SYSTEM
493

6.1 GENERAL INFORMATION
499

TECHNICAL SPECIFICATIONS
499

TIGHTENING TORQUES
500

SPECIAL TOOLS
504

SCHEMATIC OF BRAKE HYDRAULIC SYSTEM
505

6.2 COMPONENT DESCRIPTION OF BRAKE SYSTEM
507

FRONT DRUM BRAKES
507

REAR DRUM BRAKES
508

AUTO INCREMENTAL BRAKE
509

TANDEM MASTER CYLINDER (TMC)
510

TMC WITH VACUUM BOOSTER ASSEMBLY
511

WHEEL CYLINDER
514

PARKING BRAKES
515

6.3 MAINTENANCE, ADJUSTMENTS AND INSPECTION
516

BLEEDING OF HYDRAULIC SYSTEM
521

TROUBLESHOOTING AND DIAGNOSIS
523

6.4 ON VEHICLE REPAIRS
530

FRONT BRAKE COMPONENTS
531

FRONT BRAKE DRUM
532

FRONT BRAKE SHOES
534

FRONT BRAKE BACK PLATE
539

REAR BRAKE COMPONENTS
540

REAR BRAKE DRUM
541

REAR BRAKE SHOES
542

REAR BRAKE BACK PLATE
544

TMC
546

WHEEL CYLINDER
555

PARKING BRAKES
561

VACUUM BRAKE BOOSTER
564

BRAKE HOSES/PIPES SCHEMATIC
565

VACUUM LINES
567

STEERING
575

1.1 GENERAL INFORMATION
580

1.1.1 SPECIFICATIONS
580

1.1.2 SYSTEM LAYOUT
580

1.1.3 GENERAL DESCRIPTION
581

1.1.4 TIGHTENING TORQUES
582

1.1.5 SPECIAL TOOLS
584

1.2. MAINTENANCE, INSPECTION AND TEST
585

1.2.1 PRELIMINARY INSPECTION
585

1.2.2 REGULAR MAINTENANCE
586

1.2.3 ON VEHICLE REPAIRS
588

1.2.3.1 STEERING WHEEL REMOVAL
588

1.2.3.2 STEERING COLUMN REMOVAL
589

1.2.3.3 INTERMEDIATE SHAFT REMOVAL
590

1.2.3.4 ECU REMOVAL
591

1.2.3.5 RACK & PINION ASSEMBLY REMOVAL
592

1.3. OVERHAULING
594

1.3.1. OVERHAULING OF STEERING RACK AND PINION ASSEMBLY
594

1.3.2 PRECAUTIONS
595

1.3.3 DISMANTLING, INSPECTION AND ASSEMBLY
595

1.3.3.1 DISASSEMBLY OF RACK & PINON
595

1.3.3.2 INSPECTION OF DISMANTLED PARTS
596

1.3.3.3 ASSEMBLY OF RACK & PINON
597

1.3.3.4 OBJ ON-VEHICLE REMOVAL
598

1.3.3.5 DO’S & DON’TS
599

1.3.3.6 WHEEL ALIGNMENT
599

1.4. TROUBLESHOOTING AND DIAGNOSIS
601

ELECTRICAL
607

2.1. TECHNICAL SPECIFICATION
613

2.2. INSTRUMENT CLUSTER
615

2.2.1. ART WORK
615

2.2.2. TELL TALES
615

2.2.3. SPECIFICATION
616

2.2.4. CONNECTION DETAILS
616

2.2.5. CONNECTOR DETAILS
616

2.2.6. PINOUT DETAILS
616

2.2.7 FREQUENTLY ASKED QUESTIONSDistance to Empty (DTE)
617

2.2.8 SEASON ODOMETER WRITING /UPDATING PROCEDURE
619

2.3. EPAS ECU
620

2.3.1. SPECIFICATION
620

2.3.2. LOCATION
620

2.3.3. CONNECTION DETAILS
621

2.3.4. PINOUT DETAILS
621

2.4. FUSEBOX & RELAY DETAILS
622

2.4.1 LOCATION OF FUSE / RELAY / CONTROLLERS ON VEHICLE
622

2.4.2. BATTERY MOUNTED FUSE BOX DETAILS (FOR NANO CNG AND MY13)
622

2.4.3. CABIN FUSE BOX DETAILS(NANO MY13 EPAS)
623

2.4.4. RELAY BOX DETAILS (FOR NANO CNG AND MY13)
625

2.4.5. DIAGNOSTIC CONNECTOR LOCATION
625

2.4.6 ECU AND STEERING COLUMN PAIRING PROCESS
626

2.5 DIAGNOSTIC USER MANUAL
627

2.6 DIAGNOSTIC TROUBLE CODES - EPAS
637

2.7 DIAGNOSTIC TROUBLE CODES – EMS ECU
644

2.8 DIAGNOSTIC TROUBLE CODES – INSTRUMENT CLUSTER
646-647

CIRCUIT SCHEMATICS NANO MY13 EPAS
668-669

1. SYMBOLS & COLOUR CODES
676-677

2. FUSE & RELAY BOX
678-679

3. GROUND TOPOLOGY
680-681

4. POWER SUPPLY
682-683

5. EARTH
698-699

6. STARTER & CHARGING
704-705

7. ENGINE CONTROL (PETROL)
706-707

8. FUEL PUMP
714-715

9. MANUAL HVAC
716-717

10. RADIATOR FAN
718-719

11. POWER WINDOWS
720-721

12. CENTRAL DOOR LOCKING
724-725

13. INSTRUMENT CLUSTER
730-731

14. FRONT WIPER
734-735

15. EXTERIOR LIGHTS
736-737

16. CAN
746-747

17. IMMOBILISER
748-749

18. INTERIOR LAMPS
750-751

19. EPAS
752-753

20. HORN
754-755

21. POWER SOCKET & CIGAR LIGHTER
756-757

22. REVERSE PARKING
758-759

23. AUDIO SYSTEM
760-761

CIRCUIT SCHEMATICS NANAO CNG EPAS
764-765

SYMBOLS & SCHEMATIC CODES
772-773

FUSE & RELAY BOX
774-775

GROUND TOPOLOGY
776-777

POWER SUPPLY
778-779

EARTH
794-795

STARTER & CHARGING
800-801

ENGINE CONTROL (PETROL)
802-803

FUEL PUMP
812-813

MANUAL HVAC
814-815

RADIATOR FAN
816-817

POWER WINDOWS
818-819

CENTRAL DOOR LOCKING
822-823

INSTRUMENT CLUSTER
826-827

FRONT WIPER
832-833

EXTERIOR LIGHT
834-835

CAN
842-843

IMMOBILISER
846-847

INTERIOR LAMPS
848-849

HORN
850-851

POWER SOCKET & CIGAR LIGHTER
852-853

REVERSE PARKING
854-855

AUDIO SYSTEM
856-857

EPAS
858-859

9. BODY
860

9.1 GENERAL INFORMATION
866

TECHNICAL SPECIFICATIONS
866

TIGHTENING TORQUE
867

9.2 ON VEHICLE REPAIRS
871

EXPLODED VIEW - BUMPERS & HOOD
871

FRONT BUMPER
872

FENDER (SIDE BONNET)
873

HOOD, HOOD LATCH, HOOD LATCH CABLE AND HOOD STRIKER
874

FRONT DOOR
878

REAR DOOR
889

REAR SHELF
898

TAILGATE
898

REAR BUMPER
899

DASHBOARD
901

CENTER CONSOLE
904

SEATS & BELTS
905

OUTER REAR VIEW MIRROR (ORVM)
915

SUN VISOR
915

TRIMS
916

FLOOR CARPET
917

WINDSHIELD
920

9.3 PAINT CARE
922

9.4 BODY REPAIR DATA
925

9.5 TROUBLESHOOTING AND DIAGNOSIS
930

10. HVAC
932

10.1 GENERAL INFORMATION
938

TECHNICAL SPECIFICATIONS
938

TIGHTENING TORQUES
939

GENERAL PRECAUTIONS
941

COMPONENT DESCRIPTION
947

10.2 MAINTENANCE OF AC/HVAC SYSTEM
950

TROUBLESHOOTING AND DIAGNOSIS
951

PRESSURE TEST USING MANIFOLD GAUGES
964

FLUSHING OF AC SYSTEM
969

REFRIGERANT RECOVERY, RECYCLING AND RECHARGING
971

A/C SYSTEM PERFORMANCE TEST
973

LEAK TEST SYSTEM
973

10.3 ON VEHICLE REPAIRS
974

CONTROL PANEL ASSEMBLY
975

A/C COMPRESSOR
976

HVAC UNIT
987

BLOWER UNIT
991

BLOWER RESISTER
991

FILTER
992

EVAPORATOR AND EXPANSION VALVE
993

HEATER ASSEMBLY
995

KINEMATICS
996

PRESSURE SWITCH
996

CONDENSER ASSEMBLY
997

DRIER CARTRIDGE/R.D. BOTTLE
999

CONDENSER FAN AND CONDENSER MOTOR
1001

REFRIGERANT LINES
1002

HEATER LINES
1004