Signal Too Low
Signal too low
Checking signal from central locking switch
- Go into rolling values.
- Read off central locking switch status.
The value of both signals should be HIGH.
Is the value of both signals HIGH?
Yes - Intermittent fault
No - Checking central locking switch
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Checking central locking switch
- Remove central locking switch from driver's door according to Door panel switch, replacement Removal and Replacement.
- Disconnect central locking switch.
- Go into rolling values.
- Read off central locking switch status.
Is the value of both signals HIGH?
Yes - Replacing component
No - Checking central locking switch
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Replacing component
Replace central locking switch for driver's door according to Door panel switch, replacement Removal and Replacement.
Continue - Verification
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Checking central locking switch
- Remove central locking switch from passenger door.
- Disconnect central locking switch.
- Go into rolling values.
- Read off central locking switch status.
Is the value of both signals HIGH?
Yes - Replacing component
No - Checking cables
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Replacing component
Replace central locking switch for passenger door.
Continue - Verification
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Checking cables
Check cables between control module #A18 and driver's door central locking switch #C2, between control module #4 and driver's door central locking switch #C2, between control module #A16 and driver's door central locking switch #C4, between control module #A16 and passenger door central locking switch #C3 and between control module #A4 and passenger door #C5 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
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Verification
Hint: After carrying out the repair, check that the fault has been remedied as follows.
that the fault has been corrected as follows:
- Reinstall connectors, components etc.
- Go into rolling values.
- Read off central locking switch status.
The value of both signals should be HIGH.
Is the value of both signals HIGH?
Yes - FAULT FOUND
No - Fault-tracing information
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Fault-tracing information
Verification indicates that the fault persists.
Do you want to repeat fault-tracing?
Yes - Checking signal from central locking switch
No - No Fault Found
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Intermittent fault
Check cable between VGLA control module terminal 17A and tilt sensor for an intermittent short-circuit to ground. Check cables between control module #A18 and driver's door central locking switch #C2, between control module #4 and driver's door central locking switch #C2, between control module #A16 and driver's door central locking switch #C4, between control module #A16 and passenger door central locking switch #C3 and between control module #A4 and passenger door #C5 for a intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults ,
Continue - Fault-tracing information
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Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
Do you want to repeat fault-tracing?
Yes - Checking signal from central locking switch
No - No Fault Found
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