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
17B-270
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$180.mif
PETROL INJECTION
Fault finding – Tests17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
*BVM: Manual gearbox.
*BVA: Automatic gearbox.
TEST 14
CONTINUEDIgnition coil check
K7M engine
Visually inspect the condition of the connectors of the ignition coil, component code 778 (see MR 388 Mechanical,
17A, Ignition, Coils: Removal - Refitting).
If the connector or connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the connector(s), otherwise replace the wiring.
Insert tool Elé. 1808 (1) in the cap of the wire of the plug concerned.
Fit the assembly in the plug well.
Start the engine and let it idle.
Apply light pressure to the assembly to hold the coil in contact with the tool.
Observe the glow from the electric arc on the spark plug well wall.
If the electric arc is not produced, replace the ignition coil (see MR 388 Mechanical, 17A, Ignition, Coils:
Removal – Refitting).
If the fault is still present, contact the techline.
D4D engine
– Switch on the vehicle + after ignition feed.
– Run command VP036 FUEL SUPPLY INHIBITION.
Put the vehicle under starting conditions:
– position of gear lever in neutral for a manual gearbox* or position "P" (Parking) for an automatic gearbox*.
– brake pedal depressed.
– Run command RZ003 ENGINE ADAPTIVES.
Remove the plugs from each cylinder and check, one after another, that sparks are present by bringing the plug
close to a chassis earth, with the starter engaged. If no spark is produced, replace the ignition coil, component
code 778 (see MR 388 Mechanical, 17A, Ignition, Coils: Removal – Refitting).
If the fault is still present, contact the techline.
