Possible Causes
Visual Inspection and Diagnostic Pre-checks
Verify BCM fuse 29 (30A) is OK.
PINPOINT TEST F : THE LH (LEFT-HAND) REAR QUARTER WINDOW IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
F1 CHECK THE WINDOW UP/DOWN CIRCUITS FOR AN OPEN
Ignition OFF. Disconnect: Master Window Control Switch C504. Disconnect: Left Rear Power Window Motor C3118. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C504-17 | C3118-4 | |
C504-18 | C3118-5 |
Are the resistances less than 3 ohms?
Yes | GO to F2 |
|---|---|
No | REPAIR the circuit. |
F2 CHECK THE POWER TO THE WINDOW MOTOR
Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3118-1 | Ground |
Is the voltage greater than 11 volts?
Yes | GO to F3 |
|---|---|
No | VERIFY BCM fuse 29 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. |
F3 CHECK THE WINDOW MOTOR DELAYED ACCESSORY FEED
Ignition ON. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3118-3 | Ground |
Is the voltage greater than 11 volts?
Yes | GO to F4 |
|---|---|
No | REPAIR the circuit. |
F4 CHECK THE WINDOW MOTOR GROUND
Ignition OFF. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3118-2 | Ground |
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.