Internal Fault

Internal fault

Checking the power supply
- Ignition off
- Disconnect connector A for the door control module
- Ignition on.
Check the power supply to the door control module:
- Measure the supply voltage between terminal #A18 (#18) and terminal #A8 (#9) on connector A for the door control module
- Measuring the battery voltage.
If the difference between the supply voltage for the door control module and the battery voltage is greater than 2.5 V, the fault is in the power cable or is due to contact resistance. Also check the fuse for the door control module. A half burned fuse can cause intermittent faults.
There may be an internal fault in the door control module if the difference is less than 2.5 V.
Remedy as necessary.

Other information:
- Connecting the breakout box, driver door module / passenger door module (DDM/PDM) Connecting the Breakout Box, Driver Door Module / Passenger Door Module (DDM/PDM)
- Signal specification Signal Specification, Driver's Door Module / Passenger Door Module (DDM/PDM)
- Driver door module (DDM) Driver Door Module (DDM)
- Checking wiring and terminals Checking Wiring and Terminals





Continue - Verification

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Verification




Verification mixed

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Check that the power window mechanism, door mirrors and central locking operate.

Do all the functions operate normally?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking the power supply

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