NO. 1 DRIVER-SIDE FRONT WINDOW DOES NOT GO UP AND DOWN IN AUTOMATIC MODE


BHE090358000W05

1

Driver-side front window does not go up and down in automatic mode

POSSIBLE CAUSE

• Open or short to B+ circuit in position sensor 1 signal, ground signal from wiring harness (between power window main switch and driver-side front power window motor), inner power window main switch, or inner motor: Steps 3-6
• Open or short to B+/ground circuit in position sensor 2 signal from wiring harness (between power window main switch and driver-side front power window motor), inner power window main switch, or inner motor: Steps 7-11
Note
• The automatic function and the ignition off timer function do not operate while power window main switch is in fail-safe mode. The fail-safe operates when position sensor 1, and/or position sensor 2 power supply malfunctions.
• Position sensor 1 and/or 2 malfunction
– When driver-side front window is kept up down, main switch can not sense a pulse signal from position sensor 1 during that can sense 5 pulses (2.5 cycles) from position 2.
– When driver-side front window is kept up down, main switch can not sense a pulse signal from position sensor 2 during that can sense 5 pulses (2.5 cycles) from position 1.
– There are 3 abnormal pulse from a pulse signal during driver-side front window is kept up or down.
– There are 20 cycle pulses from a close position during driver-side front window is kept up.
– There is no pulse signal during 1 sec. after down is operated from fully closed position.

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 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?
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 approx. 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?
– O-H (position sensor 1 signal)
– C-E (position sensor power supply)
– M-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:
– O (position sensor 1 signal)
– M (ground signal)
• Is voltage approx. 12 V?
Yes
Repair wiring harness between power window main switch and driver-side front power window motor, then go to Step 12.
No
Go to next step.
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?
– O (position sensor 1 signal)
– C (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.
7

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?
Yes
Replace power window main switch. (malfunction in power window main switch automatic mode control), then go to Step 11.
No
Go to next step.
8

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?
Yes
Go to next step.
No
Replace driver-side front power window motor, then go to Step 12.
9

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)?
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.
10

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?
Yes
Repair wiring harness between power window main switch and driver-side front power window motor, then go to Step 12.
No
Go to next step.
11

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?
Yes
Repair wiring harness between power window main switch and front driver-side power window motor, then go to next step.
No
Replace power window main switch (open or short to B+/ground in power window main switch), then go to next step.
12

RECHECK MALFUNCTION SYMPTOM AFTER REPAIR

• Did malfunction disappear?
Yes
• Troubleshooting completed.
• Explain repairs to customer.
No
Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.