NOTE: If the fuse in the jumper wire fails, refer to the Wiring Diagrams manual to identify the possible causes of the circuit short.
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C169-1 | Ground |
Ignition ON. Using a scan tool, monitor the Reverse Switch (REV_SW) PCM PID.
Does the PID indicate the transmission is in reverse gear?
Yes | REMOVE the jumper wire. GO to A8 |
|---|---|
No | REMOVE the jumper wire. GO to A9 |
A8 CHECK THE REVERSING LAMP SWITCH GROUND CIRCUIT FOR AN OPEN
Connect a fused jumper wire:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C169-1 | C169-2 |
Ignition ON. Using a scan tool, monitor the Reverse Switch (REV_SW) PCM PID.
Does the PID indicate the transmission is in reverse gear?
Yes | REMOVE the jumper wire. INSTALL a new reversing lamp switch. REFER to: Reversing Lamp Switch (417-01 Exterior Lighting, Removal and Installation). |
|---|---|
No | REMOVE the jumper wire. REPAIR the circuit. |
A9 CHECK THE REVERSING LAMP SWITCH INPUT CIRCUIT FOR AN OPEN
Ignition OFF. Disconnect: PCM C1551B (2.3L). Disconnect: PCM C1381B (3.7L). Disconnect: PCM C175B (5.0L). Measure:
Click to display connectors
2.3L Vehicles
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C169-1 | C1551B-11 |
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.