Page 241 of 279

17B-241
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 21 Rough idle
Check the alternator charge signal module by running TEST 2 Alternator signal module check.
Check the accelerator pedal potentiometer by running TEST 8 Accelerator pedal potentiometer check.
Check the air filter unit.
Check the inlet manifold air pressure sensor by running TEST 7 Air inlet pressure sensor check.
Check the throttle valve by running TEST 3 Throttle valve check.
Check the additional fuel circuit solenoid valve by running TEST 5 Checking the additional fuel tank.
Check the spark plugs.
Check the injector rail.
Check the inlet manifold.
Check the ignition coil by running TEST 14 Checking the ignition coil.
Check the injectors by running TEST 13 Checking the injectors.
Check the additional petrol circuit pump by running TEST 12 Additional fuel tank pump check.
Check the upstream oxygen sensor by running TEST 17 Checking the upstream O2 sensor.
Check the downstream oxygen sensor by running TEST 18 Checking the downstream O2 sensor.
Check the cylinder head.
Check the camshaft.
Check the valves.
Check the timing.
Check the rotating parts.
Check the injection computer.
Check the injection pump.
If the fault is still present, contact the techline.
V42_V04_ALP21/V42_V05_ALP21/V42_V06_ALP21/V42_V14_ALP21/V42_V16_ALP21/V42_V18_ALP21
Page 242 of 279

17B-242
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 22 Idling speed too high or too low
Check the alternator charge signal module by running TEST 2 Alternator signal module check.
Check the accelerator pedal potentiometer by running TEST 8 Accelerator pedal potentiometer check.
Check the air filter unit.
Check the air inlet temperature sensor by running TEST 6 Checking the air temperature sensor.
Check the throttle valve by running TEST 3 Throttle valve check.
Check the additional fuel circuit solenoid valve by running TEST 5 Checking the additional fuel tank.
Check the coolant temperature sensor by running TEST 15 Coolant temperature sensor check.
Check the spark plugs.
Check the injector rail.
Check the inlet manifold.
Check the additional petrol circuit pump by running TEST 12 Additional fuel tank pump check.
Check the upstream oxygen sensor by running TEST 17 Checking the upstream O2 sensor.
Check the downstream oxygen sensor by running TEST 18 Checking the downstream O2 sensor.
Check the cylinder head.
Check the camshaft.
Check the valves.
Check the timing.
Check the injection computer.
If the fault is still present, contact the techline.
V42_V04_ALP22/V42_V05_ALP22/V42_V06_ALP22/V42_V14_ALP22/V42_V16_ALP22/V42_V18_ALP22
Page 243 of 279

17B-243
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 23 Jerking or hesitation
Check the alternator charge signal module by running TEST 2 Alternator signal module check.
Check the fuel pump relay by running TEST 1 Petrol supply pump relay check.
Check the accelerator pedal potentiometer by running TEST 8 Accelerator pedal potentiometer check.
Check the brake pedal switch by running TEST 9 Brake pedal switch check.
Check the air filter unit.
Check the inlet manifold air pressure sensor by running TEST 7 Air inlet pressure sensor check.
Check the air pipes.
Check the air inlet temperature sensor by running TEST 6 Checking the air temperature sensor.
Check the throttle valve by running TEST 3 Throttle valve check.
Check the additional fuel circuit solenoid valve by running TEST 5 Checking the additional fuel tank.
Check the spark plugs.
Check the injector rail.
Check the inlet manifold.
Check the ignition coil by running TEST 14 Checking the ignition coil.
Check the injectors by running TEST 13 Checking the injectors.
Check the additional petrol circuit pump by running TEST 12 Additional fuel tank pump check.
Check the TDC sensor by running TEST 10 TDC sensor check.
Check the upstream oxygen sensor by running TEST 17 Checking the upstream O2 sensor.
Check the downstream oxygen sensor by running TEST 18 Checking the downstream O2 sensor.
Check the camshaft.
Check the valves.
Check the timing.
Check the supply relay and the injection computer.
If the fault is still present, contact the techline.
V42_V04_ALP23/V42_V05_ALP23/V42_V06_ALP23/V42_V14_ALP23/V42_V16_ALP23/V42_V18_ALP23
Page 244 of 279

17B-244
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 24 Engine stalls
Check the fuel pump relay by running TEST 1 Petrol supply pump relay check.
Check the air filter unit.
Check the inlet manifold air pressure sensor by running TEST 7 Air inlet pressure sensor check.
Check the air pipes.
Check the additional fuel circuit solenoid valve by running TEST 5 Checking the additional fuel tank.
Check the injector rail.
Check the injectors by running TEST 13 Checking the injectors.
Check the additional petrol circuit pump by running TEST 12 Additional fuel tank pump check.
Check the TDC sensor by running TEST 10 TDC sensor check.
Check the upstream oxygen sensor by running TEST 17 Checking the upstream O2 sensor.
Check the downstream oxygen sensor by running TEST 18 Checking the downstream O2 sensor.
Check the camshaft.
Check the valves.
Check the timing.
Check the injection computer.
Check the injection computer supply relay.
If the fault is still present, contact the techline.
V42_V04_ALP24/V42_V05_ALP24/V42_V06_ALP24/V42_V14_ALP24/V42_V16_ALP24/V42_V18_ALP24
Page 245 of 279
17B-245
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 25 Erratic acceleration
Check that the floor carpet is correctly positioned.
Check the accelerator pedal potentiometer by running TEST 8 Accelerator pedal potentiometer check.
If the fault is still present, contact the techline.
V42_V04_ALP25/V42_V05_ALP25/V42_V06_ALP25/V42_V14_ALP25/V42_V16_ALP25/V42_V18_ALP25
Page 246 of 279
17B-246
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 26 Erratic deceleration
Check the inlet manifold air pressure sensor by running TEST 7 Air inlet pressure sensor check.
Check the throttle valve by running TEST 3 Throttle valve check.
If the fault is still present, contact the techline.
V42_V04_ALP26/V42_V05_ALP26/V42_V06_ALP26/V42_V14_ALP26/V42_V16_ALP26/V42_V18_ALP26
Page 247 of 279
17B-247
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 27 Engine racing (without action on the accelerator pedal)
Check the accelerator pedal potentiometer by running TEST 8 Accelerator pedal potentiometer check.
Check the throttle valve by running TEST 3 Throttle valve check.
Check the injection computer.
If the fault is still present, contact the techline.
V42_V04_ALP27/V42_V05_ALP27/V42_V06_ALP27/V42_V14_ALP27/V42_V16_ALP27/V42_V18_ALP27
Page 248 of 279
17B-248V2 MR-376-X76-17B050$170.mif
17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
Fuel supply pump relay check TEST 1
Alternator signal module check TEST 2
Throttle valve checkTEST 3
Fuel vapour absorber solenoid valve check TEST 4
Additional fuel tank checkTEST 5
Air temperature sensor check TEST 6
Air inlet pressure sensor check TEST 7
Accelerator pedal potentiometer check TEST 8
Brake pedal switch checkTEST 9
TDC sensor checkTEST 10
Pinking sensor checkTEST 11
Additional fuel tank pump check TEST 12
Injector checkTEST 13
Ignition coil checkTEST 14
Coolant temperature sensor check TEST 15
PETROL INJECTION
Fault finding – Test summary table