Signal Too Low
Signal too low
Checking for permanent or intermittent faults
Check that the driver's door lock can be operated with the key.
Is the function OK?
Yes - Checking the cable
No - Checking the cable
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Checking the cable
Check the cable between the door control module and the lock unit on the driver's door. Check for a short-circuit to ground.
DDM-0019 Central locking input (Unlocking)
Door control module terminal #A12 and driver's door terminal #1.
DDM-001A Central locking input (Locking)
Door control module terminal #A13 and driver's door terminal #5.
DDM-001B Central locking, lock cylinder
Door control module terminal #A13 and driver's door terminal #5, and door control module terminal #A12 and driver's door terminal #1.
Remedy as necessary.
Other information:
- With the ignition off, the voltage between terminal #12B and ground must be battery voltage
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters
- To access the driver/passenger door module (DDM/PDM), see Driver's door module / passenger door module (DDM/PDM), replacing Driver's Door Module/Passenger Door Module (DDM/PDM), Replacing
- To access the lock unit, see Lock mechanism front side door, replacing Lock Mechanism Front Side Door, Replacing
- Checking wiring and terminals Checking Wiring And Terminals.
Was a fault detected?
Yes - Verification
No - Fault-tracing information
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Checking the cable
Check the cable between the door control module and the lock unit on the driver's door. Check for an intermittent short-circuit to ground.
DDM-0019 Central locking input (Unlocking)
Door control module terminal #A12 and driver's door terminal #1.
DDM-001A Central locking input (Locking)
Door control module terminal #A13 and driver's door terminal #5.
DDM-001B Central locking, lock cylinder
Door control module terminal #A13 and driver's door terminal #5, and door control module terminal #A12 and driver's door terminal #1.
Remedy as necessary.
Other information:
- With the ignition off, the voltage between terminal #12B and ground must be battery voltage
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters
- To access the driver/passenger door module (DDM/PDM), see Driver's door module / passenger door module (DDM/PDM), replacing Driver's Door Module/Passenger Door Module (DDM/PDM), Replacing
- To access the lock unit, see Lock mechanism front side door, replacing Lock Mechanism Front Side Door, Replacing
- Checking wiring and terminals Checking Wiring And Terminals.
Continue - Fault-tracing information
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reinstall the connectors, components etc.
Check that the driver's door lock can be operated with the key.
Is the function OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - Fault Found
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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Attempt New Test - Checking for permanent or intermittent faults
FAULT-TRACING FAILED - No Fault Found
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - Fault Found
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Attempt New Test - Checking for permanent or intermittent faults
FAULT FOUND - Fault Found
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