13B-189
AFTER REPAIRDeal with any faults displayed by the diagnostic tool. Clear the computer fault
memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$170.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
PR089VEHICLE SPEED
PARAMETER
DEFINITIONThis parameter indicates the vehicle speed in mph (km/h).
NOTESSpecial notes:
This parameter is transmitted by the ABS computer or by the wheel speed computer.
This signal is transmitted to the injection on the multiplex network.
Conformity check: Engine stopped and ignition on, or engine running and engine coolant
temperature > 80
°C
In the event of a fault, carry out a multiplex network test (see 88B, Multiplexing)
Then a complete fault finding procedure of the ABS computer (see 38C, Antilock braking system) or VSU
(see 38G, Wheel speed computer).
DCM1.2_V48_PR089/DCM1.2_V4C_PR089/DCM1.2_V50_PR089/DCM1.2_V54_PR089/DCM1.2_V58_PR089/DCM1.2_V5C_PR089
13B-225V10 MR-372-J84-13B100$190.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
TEST 12 Turbocharger
IMPORTANT
Perform these checks without removing the turbocharger and with the vehicle ignition switched off.
Checking the turbocharger shaft
WARNING
Observe the following safety precautions:
–wear high temperature protective gloves when the engine is hot,
–do not wear oversize or baggy clothing or hanging jewellery,
–watch out for possible triggering of the motor-driven cooling fan unit and the operation of the accessories belt
or belts.
Note:
The turbocharger shaft is the shaft that connects the compressor wheel and the turbine wheel.
Depending on the vehicle type, the best visual access will be either from above or from below.
Disconnect the air pipe located between the turbocharger and the air filter.
Wearing gloves, check the operation of the turbocharger shaft by turning the vanes manually without forcing.
Does the shaft have a kickdown point in rotation?
Does the compressor wheel touch the casing of the turbocharger?
If for these 2
questions the
response is NOIf YES for one of these 2 questions
Replace the turbocharger (see MR 364 (Mégane II), 370 (Scénic II) 392
(Clio III), 385 (Modus), 411 (New Twingo) or 417 (Kangoo II),
Mechanical, 12B, Turbocharging, Turbocharger: Removal -
Refitting and Technical Note 3938A, Broken turbocharger:
Replacement instructions).
A
DCM1.2_V48_TEST12/DCM1.2_V4C_TEST12/DCM1.2_V50_TEST12/DCM1.2_V54_TEST12/DCM1.2_V58_TEST12/DCM1.2_V5C_TEST12
