Pinpoint Test C: A Single Power Window Is Inoperative - LH Front
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- C1 CHECK THE VOLTAGE TO THE POWER WINDOW MOTOR
- Ignition OFF.
- Disconnect: LH Front Power Window Motor C540.
- Measure the voltage between LH front power window motor C540-2, circuit SBP01 (RD), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : GO to C2.
- No
: VERIFY Body Control Module (BCM) fuse 12 (30A) is OK. If OK, REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.
If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short. REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.
- C2 CHECK THE LH FRONT POWER WINDOW MOTOR DELAYED ACCESSORY FEED
- Ignition ON.
- Measure the voltage between LH front power window motor C540-6, circuit CBP32 (GN/VT), harness side and ground.
- Is the voltage greater than 10 volts?
- Yes : GO to C3.
- No : VERIFY Body Control Module (BCM) fuse 32 (15A) is OK. If OK, REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation. If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short. REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.
- C3 CHECK THE LH FRONT POWER WINDOW MOTOR GROUND
- Ignition OFF.
- Measure the resistance between LH front power window motor C540-1, circuit GD137 (BK/WH), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes : GO to C4.
- No : REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.
- C4 CHECK THE WINDOW CONTROL SWITCH TO LH FRONT MOTOR CIRCUITS FOR AN OPEN
- Disconnect: LH Front Window Control Switch C537 (regular or SuperCab) or C566A (Crew Cab).
- Measure the resistance between LH front power window motor and LH front window control switch.
- For regular or SuperCab, measure the resistance between LH front power window motor C540-7, circuit CPW10 (YE/VT), harness side and LH front window control switch C537-1, circuit CPW10 (YE/VT), harness side.
- For Crew Cab, measure the resistance between LH front power window motor C540-7, circuit CPW10 (YE/VT), harness side and LH front window control switch C566A-7, circuit CPW10 (YE/VT), harness side.
- Is the resistance less than 5 ohms?
- Yes : GO to C5.
- No : REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.
- C5 CHECK THE WINDOW CONTROL SWITCH TO LH FRONT MOTOR CIRCUITS FOR AN OPEN
- Measure the resistance between LH front power window motor and LH front window control switch.
- For regular or SuperCab, measure the resistance between LH front power window motor C540-3, circuit CPW11 (BU/GY), harness side and LH front window control switch C537-2, circuit CPW11 (BU/GY), harness side.
- For Crew Cab, measure the resistance between LH front power window motor C540-3, circuit CPW11 (BU/GY), harness side and LH front window control switch C566A-3, circuit CPW11 (BU/GY), harness side.
- Is the resistance less than 5 ohms?
- Yes : GO to C6.
- No : REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.
- Measure the resistance between LH front power window motor and LH front window control switch.
- C6 CHECK THE LH FRONT WINDOW CONTROL SWITCH
- Carry out the LH front window control switch component test. Refer to appropriate "OEM Wiring Diagrams Component Testing" article for component testing.
- Did the window control switch pass the component test?
- Yes : INSTALL a new LH front window regulator and motor. REFER to WINDOW REGULATOR AND MOTOR - FRONT DOOR . INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.
- No : INSTALL a new LH front window control switch. REFER to WINDOW CONTROL SWITCH . INITIALIZE the LH front power window motor. REFER to WINDOW MOTOR INITIALIZATION . TEST the system for normal operation.