5/33221, 5/33271, 5/33222, 5/33272

Electrically Heated Rear Window And Mirrors - Testing

Fault Symptom.
Permanent: 53221
Intermittent: 33221

Conditions
Open circuit or short circuit to +12 V (pin 11) when electrically heated rear window is off. (version 2.01)

Fault Symptom.
Permanent: 53271
Intermittent: 33271

Conditions
Short circuit to ground (pin 11) with electrically heated rear window on. (version 2.01)

Fault Symptom.
Permanent: 53222
Intermittent: 33222*

Conditions
Short circuit to 12V (pin 31) only with ECON connected. (version 2.01)

* For additional information refer to "Wiring Harness, Adapting".
Service and Repair

Fault symptom
Permanent: 53272
Intermittent: 33272

Conditions
Short circuit to ground (pin 31) only with AUTO engaged. (version 2.01)

Action
1. Check the fuse in the power supply (to electrically heated rear window).

2. Check if supply is received at electrically heated rear window when it is manually switched on.

3. If no supply is received at the electrically heated rear window check the signal to the window on the ACC control module.

4. If there is no fault with the signal, the fault is in the relay or its associated wiring harness.

5. If the signal from the ACC control module is incorrect carefully check connections in the ACC control module connector and then try a new ACC control module.