| 1 |
VERIFY IF MALFUNCTION CAUSE IS OPERATION UNDER OPERATION PERMISSION CONDITION
- Perform the power window system initialization procedure.
- Does the driver-side door glass operate automatically using the power window main switch?
|
Yes |
System is normal. (Tell the customer about power window system initialization procedure.) |
| No |
Go to the next step. |
| 2 |
POWER WINDOW MAIN SWITCH CONNECTOR INSPECTION
- Switch the ignition off.
- Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION
.)
- Disconnect the power window main switch connector.
- Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
- Is the connector normal?
|
Yes |
Go to the next step. |
| No |
Repair or replace the connector, then go to Step 10. |
| 3 |
POWER WINDOW MOTOR CONNECTOR INSPECTION
- Disconnect the power window motor connector.
- Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
- Is the connector normal?
|
Yes |
Go to the next step. |
| No |
Repair or replace the connector, then go to Step 10. |
| 4 |
POWER WINDOW MOTOR TERMINAL D INSPECTION
- Reconnect all the disconnected connectors.
- Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION
.)
- Measure the voltage at the power window motor terminal D (vehicle wiring harness side).
- Is the voltage B+?
|
Yes |
Go to Step 6. |
| No |
Go to the next step. |
| 5 |
POWER WINDOW MAIN SWITCH TERMINAL 2N INSPECTION
- Measure the voltage at power window main switch terminal 2N (vehicle wiring harness side).
- Is the voltage B+?
|
Yes |
Refer to the wiring diagram and verify if there is a common connector between power window main switch terminal 2N and power window motor terminal D.
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open or short circuit to determine the malfunctioning location.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which has an open or short circuit.
Go to Step 10. |
| No |
Replace the power window main switch, then go to Step 10.
(See POWER WINDOW MAIN SWITCH REMOVAL/INSTALLATION
.) |
| 6 |
DETERMINE IF MALFUNCTION CAUSE IS POWER WINDOW MAIN SWITCH INTERNAL GROUND SYSTEM
|
Yes |
Go to Step 8. |
| No |
Go to the next step. |
| 7 |
VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN POWER WINDOW MAIN SWITCH AND POWER WINDOW MOTOR
- Disconnect the power window main switch connector and power window motor connector.
- Inspect for continuity between the following terminals (vehicle wiring harness).
- Power window main switch terminal 2B and power window motor terminal A
- Is there continuity?
|
Yes |
Replace the power window main switch, then go to Step 10.
(See POWER WINDOW MAIN SWITCH REMOVAL/INSTALLATION
.) |
| No |
Refer to the wiring diagram and verify if there is a common connector between power window main switch terminal 2B and power window motor terminal A.
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which has an open circuit.
Go to Step 10. |
| 8 |
POWER WINDOW MAIN SWITCH TERMINALS 2F AND 2D INSPECTION
- Reconnect all the disconnected connectors.
- Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION
.)
- Switch the ignition ON (engine off or on).
- Operate the driver-side power window to measure the pulse at power window main switch terminals 2F and 2D.
- Measure the pulse at power window main switch terminals 2F and 2D. (See INSPECTION USING AN OSCILLOSCOPE .)
- Is the pulse normal?
|
Yes |
NOTE:
- The power window motor is normal because the pulse sent from the power window motor to the power window main switch is normal.
Replace the power window main switch, then go to Step 10.(See POWER WINDOW MAIN SWITCH REMOVAL/INSTALLATION
.) |
| No |
Go to the next step. |
| 9 |
POWER WINDOW MOTOR TERMINALS B AND C INSPECTION
- Operate the driver-side power window to measure the pulse at power window motor terminals B and C. (See INSPECTION USING AN OSCILLOSCOPE .)
- Is the pulse normal?
|
Yes |
Refer to the wiring diagram and verify if there is a common connector between the following terminals.
- Power window main switch terminal 2D and power window motor terminal B
- Power window main switch terminal 2F and power window motor terminal C
If there is a common connector:
- Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open or short circuit to determine the malfunctioning location.
- Repair or replace the malfunctioning location.
If there is no common connector:
- Repair or replace the wiring harness which has an open or short circuit.
Go to the next step. |
| No |
Replace the power window motor, then go to the next step.
(See FRONT POWER WINDOW MOTOR REMOVAL/INSTALLATION
.) |
| 10 |
VERIFY IF MALFUNCTION CAUSE IS CORRECTED
- Does the power window system operate normally?
|
Yes |
Troubleshooting completed. (Explain the problem to the customer.) |
| No |
Verify the malfunction symptom in the symptom troubleshooting chart and perform the other applicable malfunction diagnosis. |