Checking The Control Module For Open-Circuits
Remove relay 2/120.
Check the driver circuit for the relay coil for an open-circuit as follows:
Measure the voltage between the points #1 and #2 in the relay socket. For more information about open circuits, see:CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Activate the relay with the switch child safety lock, for windows rear doors, on the driver's control panel (activated relay LED on).
HINT: Voltage between #1 and #2 shall be battery voltage.
If the value deviates significantly, check voltage between #2 and battery voltage as well as between #1 and ground. Both shall be equal to battery voltage. Check for open circuits according to: CHECKING WIRING AND TERMINALS. PERMANENT FAULT
Do not forget to check that the power supply to the control module is OK.
Other information
- For -2004, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING
- For 2005-, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING .
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Refer to INFORMATION