87B-39
MR-413-X44-87B000$384.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF062
PRESENT
OR
STOREDSTARTER RELAY CONTROL CIRCUIT
CC.1 : Short circuit to + 12 volts
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the starter is activated.
WARNING
When activating the starter, none of the gears must be engaged
(and the parking brake must be applied).
Check that fuse F9 (15 A) is sound and correctly fitted in the passenger compartment fuse and relay box
(component code 1016) and relay A (20 A) in the engine fuse and relay box (component code 597).
Replace the fuse if necessary.
Check the condition and connection of the UCH 24-track connector PE1 (component code 645) (tabs bent,
oxidised or broken).
Check the condition and connection of the starter relay 4-track black connector (tabs bent, oxidised or broken).
With the starter activated, check for + 12 V on connection 1B of component 645.
With the starter activated, check for + 12 V on connection AP29 of component 232.
Check the insulation, continuity and absence of interference resistance of the following connections:
Starter relay check:
●Connection code 1B between components 232 and 645.
●Connection code 1A between components 232 and 163.
●Connection code D between components 232 and 104.
●Connection code AP23 between components 232 and 1016.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the connections are correct, replace the starter relay (component code 232). (See MR 411 Mechanical
systems 16A, Starting - Charging, Starting system: Identification).
If the connections and the relay are correct, check the starter (component code 163). (See MR 411 Mechanical
systems 16A, Starting - Charging, Starting system: Identification).
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF062
