Test Point 21

TEST POINT 21
Potentiometer mirror Right Vertical Short Circuit

Fault Code 23
This fault is stored in the following cases:
1. There is a short circuit in the wire to the poL right rearview mirror.
2. The potentiometer is faulty.
3. The control module is faulty.

Fault Effect: No automatic adjustment possible

Elimination:

- Peplace support with gear unit.

- Actuate switch for memory seat adjustment.

- The text in the fault memory changes from present to not present it the cause of the fault has really been eliminated.

- If the fault is still present, there is a fault in the wire.

For a fault in the wire, proceed as described below:

- Disconnect plug at support with gear unit.

- Disconnect mirror plug from the control module.

- Use an ohmmeter to check for short circuit on the support plug Pin 1, wire colour grey, and PIn 7, wire colour pink. No continuity must be measured.

If no short circuit is detected:

- Use an ohmmeter to check for open circuit on the support plug Pin 3 and the mirror plug on the control module Pin 5

Display: < 5 ohms

- Use an ohmmeter to check for continuity on the support plug Pin 1 and Pin 7.

- If no fault is detected in the wire but the fault is still present, replace the control module.