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Group 28 Troubleshooting
MID 128 SID 20 Timing Sleeve
D7C only
Fault Codes
FMI 2
Short circuit to battery voltage, timing sleeve, positive
side.
Conditions for fault code:
•
Short circuit to battery voltage on EA9 (EECU
checks only when switching on the ignition).
Possible cause:
•
Short circuit to battery voltage on positive side.
Reaction from the EECU:
•
Fault code is set.
•
Yellow lamp is requested.
Noticeable external symptom:
•
Yellow lamp lights up.
FMI 3
Short circuit to battery voltage, timing sleeve, ground
side.
Conditions for fault code:
•
Short circuit to battery voltage on EA21 (EECU
checks only when switching on the ignition).
Possible cause:
•
Short circuit between power and ground side.
•
Short circuit to battery voltage on ground side.
Reaction from the EECU:
•
Fault code is set.
•
Red lamp is requested.
•
The timing sleeve cannot be checked.
•
Output for timing sleeve and rack drive are switched
off.
Noticeable external symptom:
•
Red lamp lights up.
•
The engine stops or does not start.
FMI 4
Short circuit to ground, timing sleeve, ground side.
Conditions for fault code:
•
Short circuit to ground on EA21.
Possible cause:
•
Short circuit to ground, ground side.
Reaction from the EECU:
•
Fault code is set.
•
Red lamp is requested.
•
Injection angle cannot be checked.
•
Output for timing sleeve and rack drive are switched
off.
Noticeable external symptom:
•
Red lamp lights up.
•
The engine stops or does not start.
FMI 5
Open circuit in the circuit to timing sleeve.
Conditions for fault code:
•
Open circuit between the EECU and the injection
pump.
Possible cause:
•
Open circuit in the wires between the EECU and the
injection pump.
Reaction from the EECU:
•
Fault code is set.
•
Red lamp is requested.
•
Output for timing sleeve and rack drive are switched
off.
Noticeable external symptom:
•
Red lamp lights up.
•
The engine stops or does not start.
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