178 POSSIBLEFAULTSONCRANKINGANDDYNAMICTESTING Note : For each Problem, all points respective to that S.No to be checked in order and rectified (Refer to ‘Flowchart’ sheet) SR. NO SENSOR /ACTUATOR FAULTVARIABLE FAULTDESCRIPTION TOCHECK TORECTIFY SYMPTOMS DTC CODE 11 GlowPlug Drive P1678 F_M_GLOWPLUG_DRIVE_APV GlowPlug Driver fault - Open circuit P1679 F_M_GLOWPLUG_DRIVE_APV GlowPlug Driver fault - short circuit P1680 F_M_GLOWPLUG_DRIVE_APV GlowPlug Driver fault - short circuit to ground 1. Glow Plug box connection 2. Electrical wiring 3. ECU connection 4. Glow Plug box malfunctioning Remove and connect again Terminal backout, wire open circuit & short circuit Connect properly Change glow plug box Check Engine lamp after starting 10 Brake switch P0571 F_M_BRAKE_SWITCH_APV Brake switch sensor - Brake pedal - signal error Remove and connect again Supply continuity and corresponding fuse Terminal backout, wire open circuit & short circuit Connect properly Ensure proper positioning and setting Brake light continously on. Fault may also appear if driver has pressed pedal and brake simultaneously 1. Switch connection 2. 12V supply and fuse 3. Electrical wiring 4. ECU connection 5. Brake Bracket, switch and setting 9 Clutch switch P0704 F_M_CLUTCH_APV Clutch switch Electrical fault 1. Switch connection 2. 12V supply and fuse 3. Electrical wiring 4. ECU connection 5. Clutch Bracket, switch and setting Remove and connect again Supply continuity and corresponding fuse Terminal backout, wire open circuit & short circuit Connect properly Ensure proper positioning and setting Fault appears above 40 kmph. No Check engine lamp 8 VNT & EGRCircuit P0299 F_M_VGT_ERROR_BOOST_APV Boost control error (boost error too high / too low) P0400 F_M_EGR_ERROR_AIR_APV Exhaust Gas Recirculation Plow Malfunction 1. Vacuum connection from resorvoir 2. Check valve 3. Vacuum connections from EVRV 4. Electrical connections on EVRV 5. Vacuum tube condition 6. Insufficient vacuum Ensure no leakage / proper connection Ensure proper assembly Ensure proper connections to EGR and VGT valves Ensure proper connection and wiring Ensure no kink or leakage Do necessary repair Check Engine lamp and Poor Vehicle acceleration 7 VNT&EGRDrive P0245 F_M_VGT_VALVE_DRIVE_APV Turbine Actuator Drive fault - short to GND P0246 F_M_VGT_VALVE_DRIVE_APV Turbine Actuator Drive fault - short circuit P0489 F_M_EGR_VALVE_DRIVE_APV EGR solenoid valve control - shorted to GND P0490 F_M_EGR_VALVE_DRIVE_APV EGR solenoid valve control - shorted to Vbat Remove and connect again Terminal backout, wire open circuit & short circuit Connect properly ChangeEVRV 1. EVRV connection 2. Electrical wiring 3. ECU connection 4. EVRV malfunctioning Check Engine lamp at key on and Poor Vehicle acceleration 1. Electrical connection from sensor to cluster 2. Electrical connection from cluster to ECU 3. Source of vehicle speed signal Poor Vehicle acceleration and check engine 5 Vehicle Speed Sensor P0500 F_M_VEH_SPEED_APV Vehicle Speed Sensor Malfunction P0501 F_M_VSS_CONSISTENCY_APV Vehicle Speed Sensor Plausibility fault Terminal backout, wire open and short circuit Terminal backout, wire open and short circuit Change Vehicle speed sensor 6 Pedal Sensor P0120 F_M_PEDAL_LIMPH_APV Pedal sensor fault - triggers limp home mode P1121 F_M_PEDAL_REDUC_APV Pedal sensor fault - trigger reduced torquemode P1123 F_M_PEDAL_CORREL_APV Pedal correlation fault -Track1 over Track2 P1223 F_M_PEDAL_CORREL_APV Pedal correlation fault -Track2 over Track1 P2299 F_M_PEDAL_STUCK_APV Pedal sensor electrical fault -pedal stuck 1. Pedal Device connection 2. Electrical wiring 3. ECU connection 4. Pedal Device malfunctioning 5. Brake contactor connection Remove and connect again 20 pin connector at co-driver side, 12/16 pin grey connector from engine harness Connect properly Change Device Rectify / change brake contactor No pedal response. Engine raises to 1300 rpm and check engine lamp
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