S–124
TROUBLESHOOTING [POWER WINDOW SYSTEM]
Diagnostic procedure
STEP INSPECTION ACTION
1 INSPECT WHETHER POWER WINDOW MAIN
SWITCH ENTERS FAIL-SAFE MODE OR NOT
• Did driver-side front window go up or down in
automatic mode?
Yes Recheck malfunction symptoms.
No Go to next step. (Power window main switch may enter fail-
safe mode.)
2 VERIFY WHETHER MALFUNCTION IS IN
WIRING HARNESS (BETWEEN POWER
WINDOW MAIN SWITCH AND DRIVER-SIDE
FRONT POWER WINDOW MOTOR) OR
ELSEWHERE
• Turn ignition switch ON position.
• Test voltage at power window main switch
connector terminal 2C (position sensor 1
signal).
• Is voltage alternate between 0 V and
approximately 5 V when driver-side front
window is being gone up and down?
Yes Go to Step 7.
No Go to next step.
3 VERIFY POSITION SENSOR 1 OUTPUT
SIGNAL
• Turn ignition switch to ON position.
• Test voltage at driver-side front power
window motor connector terminal H (position
sensor 1 signal).
• Is voltage alternate between 0 V and
approximately 12 V when driver-side front
window is being gone up and down at
manual mode?
Yes Go to next step.
No Replace driver-side front power window motor, then go to
Step 12.
4 INSPECT WIRING HARNESS BETWEEN
POWER WINDOW MAIN SWITCH AND
DRIVER-SIDE FRONT POWER WINDOW
MOTOR FOR CONTINUITY
• Turn ignition switch to LOCK position.
• Disconnect power window main switch
connector.
• Is there continuity between the following
power window main switch connector
terminals and driver-side front power window
motor connector terminals?
— 2C–H (position sensor 1 signal)
— 2D–E (position sensor power supply)
— 2A–F (ground signal)
Yes Go to next step.
No Repair wiring harness between power window main switch
and driver-side front power window motor, then go to Step
12.
5 VERIFY WHETHER MALFUNCTION IS IN
WIRING HARNESS (BETWEEN POWER
WINDOW MAIN SWITCH AND DRIVER-SIDE
FRONT POWER WINDOW MOTOR) OR
POWER WINDOW MAIN SWITCH
• Turn ignition switch to ON position.
• Measure voltage at the following power
window main switch connector terminals:
— 2C (position sensor 1 signal)
— 2A (ground signal)
• Is voltage approximately 12 V?
Yes Repair wiring harness between power window main switch
and driver-side front power window motor, then go to Step
12.
No Replace power window main switch (open or short to B+ in
power window main switch).
6 VERIFY WHETHER MALFUNCTION IS IN
WIRING HARNESS (BETWEEN POWER
WINDOW MAIN SWITCH AND DRIVER-SIDE
FRONT POWER WINDOW MOTOR) OR
ELSEWHERE
• Is continuity between following power
window main switch connector terminals and
ground?
— 2C (position sensor 1 signal)
— 2D (position sensor power supply)
Yes Replace wiring harness between power window main switch
and driver-side front power window motor, then go to Step
12.
No Go to next step.
To Next Page
Loading...
