Checking The Control Module For Open-Circuits
Remove relay 2/119.
Check the driver circuit for the relay coil for an intermittent open-circuit as follows:
Measure the voltage between terminals #1 and #2 on the relay base.
see CHECKING WIRING AND TERMINALS. INTERMITTENT FAULTS
Activate the relay driver for the right rear window down: Use the VCT2000 (or appropriate scan tool).
HINT: The voltage between terminals #1 and #2 should 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 an intermittent open-circuit. See CHECKING WIRING AND TERMINALS. INTERMITTENT FAULTS 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