STEP
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INSPECTION
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ACTION
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1
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INSPECT WHETHER POWER WINDOW MAIN SWITCH ENTERS FAIL-SAFE MODE OR NOT
• Did driver-side front window go up or down in automatic mode?
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Yes
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Recheck malfunction symptoms.
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No
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Go to next step. (Power window main switch may enter fail-safe mode.)
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2
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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 O (position sensor 1 signal).
• Is voltage alternate between 0 V and approx. 12 V when driver-side front window is being gone up and down?
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Yes
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Go to Step 7.
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No
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Go to next step.
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3
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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 approx. 12 V when driver-side front window is being gone up and down at manual mode?
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Yes
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Go to next step.
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No
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Replace driver-side front power window motor, then go to Step 12.
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4
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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?
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– O-H (position sensor 1 signal)
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– C-E (position sensor power supply)
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– M-F (ground signal)
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Yes
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Go to next step.
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No
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Repair wiring harness between power window main switch and driver-side front power window motor, then go to Step 12.
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5
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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:
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– O (position sensor 1 signal)
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– M (ground signal)
• Is voltage approx. 12 V?
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Yes
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Repair wiring harness between power window main switch and driver-side front power window motor, then go to Step 12.
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No
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Go to next step.
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6
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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?
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– O (position sensor 1 signal)
-
– C (position sensor power supply)
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Yes
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Replace wiring harness between power window main switch and driver-side front power window motor, then go to Step 12.
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No
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Go to next step.
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7
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VERIFY WHETHER MALFUNCTION IS IN POWER WINDOW MAIN SWITCH OR ELSEWHERE
• Turn ignition switch to ON position.
• Test voltage at power window main switch connector terminal P (position sensor 2 signal).
• Does voltage alternate between 0 V and approx. 12 V when driver-side front window is being gone up down?
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Yes
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Replace power window main switch. (malfunction in power window main switch automatic mode control), then go to Step 11.
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No
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Go to next step.
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8
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VERIFY POSITION SENSOR 2 OUTPUT SIGNAL
• Turn ignition switch to ON position.
• Test voltage at driver-side front power window motor connector terminal G (position sensor 2 signal).
• Is voltage alternate between 0 V and approx. 12 V when driver-side front window is being gone up down?
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Yes
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Go to next step.
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No
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Replace driver-side front power window motor, then go to Step 12.
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9
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VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW MAIN SWITCH AND DRIVER-SIDE FRONT POWER WINDOW MOTOR) OR ELSEWHERE
• Turn ignition switch to LOCK position.
• Disconnect power window main switch connector and driver-side front power window motor connector.
• Is there continuity between power window main switch connector terminal P (position sensor 2 signal) and driver-side front power window motor connector terminal G (position sensor 2 signal)?
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Yes
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Go to next step.
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No
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Repair wiring harness between power window main switch and driver-side front power window motor, then go to Step 12.
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10
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VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN POWER WINDOW MAIN SWITCH AND DRIVER-SIDE FRONT POWER WINDOW MOTOR) OR ELSEWHERE
• Is there continuity between power window main switch connector terminal P (position sensor 2 signal) and ground?
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Yes
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Repair wiring harness between power window main switch and driver-side front power window motor, then go to Step 12.
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No
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Go to next step.
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11
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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 power window main switch connector terminal P (position sensor 2 signal).
• Is voltage approx. 12 V?
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Yes
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Repair wiring harness between power window main switch and front driver-side power window motor, then go to next step.
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No
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Replace power window main switch (open or short to B+/ground in power window main switch), then go to next step.
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12
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RECHECK MALFUNCTION SYMPTOM AFTER REPAIR
• Did malfunction disappear?
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Yes
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• Troubleshooting completed.
• Explain repairs to customer.
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No
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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