PINPOINT TEST A : A SINGLE MIRROR IS INOPERATIVE (WITHOUT MEMORY MIRRORS)
NOTICE: The following step uses a test lamp to simulate normal circuit loads. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.
A1 CHECK THE EXTERIOR MIRROR
Ignition OFF. Disconnect: inoperative exterior mirror C520 (LH exterior mirror) or C626 (RH exterior mirror). Ignition ON. Select the inoperative exterior mirror by pressing the appropriate exterior mirror selection switch. Connect:
Click to display connectors
LH exterior mirror
Lead 1 | Measurement / Action | Lead 2 |
|---|---|---|
C520-1 | C520-2 |
Click to display connectors
RH exterior mirror
Lead 1 | Measurement / Action | Lead 2 |
|---|---|---|
C626-1 | C626-2 |
Observe the test light while holding the exterior mirror control switch in the up position.
Did the test light illuminate?
Yes | CHECK the inoperative exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to: Exterior Mirror (501-09 Rear View Mirrors, Removal and Installation). |
|---|---|
No | GO to A2 |
A2 CHECK THE EXTERIOR MIRROR MOTOR COMMON CIRCUIT FOR AN OPEN
Ignition OFF. Disconnect: Front Door Window Control Switch C504. Measure:
Click to display connectors
LH exterior mirror
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C520-2 | C504-12 |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.