Test Point 19

Test point 19

Pot. mirror right horizontal
short circuit
Fault code 21

This fault is stored in the following cases:

1. There is a short circuit in the wire to the pot. right rearview mirror.

2. The potentiometer is faulty.

3. The control module is faulty.

Elimination:

- 1. Replace support with gear unit.

- 2. Actuate switch for memory seat adjustment.

The text in the fault memory changes from present to not present if 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 5, wire colour yellow, and Pin 7, wire colour pink.

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 Ohmmeter display < 5 Ohms

- If the fault is still present, replace control module.