Test A

PINPOINT TEST A: THE AUTO DIMMING MIRROR DOES NOT OPERATE CORRECTLY

Test A1-A2:

Test A2-A3:

Test A4-A5:

Normal Operation
Under normal operation the auto dimming mirror receives power from circuit 1003 (GY/YE) and ground from circuit 1205 (BK). If the vehicle is placed in REVERSE, voltage is sent to circuit 140 (BK/PK) and the auto dimming mirror will turn the dimming feature off.

Possible Causes
- Open in circuit 1003 (GY/YE).
- Open in circuit 1205 (BK)
- Open in circuit 140 (BK/PK).
- Inoperative auto dimming mirror.