Power Window Switch (Master Switch)

POWER WINDOW MASTER SWITCH INSPECTION
1. INSPECT SWITCH CIRCUIT
Disconnect the connector from the driver door ECU and inspect the connector on wire harness side, as shown.
















If the circuit is not as specified, inspect the switch.
2. INSPECT SWITCH CONTINUITY Front Drivers Switch











Front Driver's Switch







Front Passenger's Switch






Rear Left Switch






Rear Right Switch

If continuity is not as specified, replace the master switch.
If continuity is as specified, inspect the wire harness.

3. INSPECT SWITCH ILLUMINATION
(a) Set the window lock switch to the unlock position.






(b) Connect the positive (+) lead from the battery to terminal 10 and the negative (-) lead to terminal 11, and check that all the illuminations light up.






(c) Set the window lock switch to the lock position and check that all the passenger's power window switch illuminations go out.
If operation is not as specified, replace the master switch.
4. INSPECT ONE TOUCH POWER WINDOW SYSTEM/CURRENT OF CIRCUIT Using an ammeter.
(a) Disconnect the connector from the driver door ECU.






(b) Connect the positive (+) lead from the ammeter to terminal 9 on the wire harness side connector and the negative (-) lead to negative terminal of the battery.
(c) Connect the positive (+) lead from the battery to terminal 1 on the wire harness side connector.
(d) As the window goes down. check that the current flow is approximately 7A






(e) Check that the current increases up to approximately 14.5 A or more when the window stops going down. HINT: The circuit breaker opens some 4 - 40 seconds after the window stops going down, so check must be made before the circuit breaker operates.
If the operation is as specified, replace the driver door ECU.

Using an ammeter with a current - measuring probe.
(a) Remove the driver door ECU with connector connected.






(b) Attach a current-measuring probe to terminal 9 of the wire harness.
(c) Turn the ignition switch ON and set the power window switch in the down position.
(d) As the window goes down, check that the current flow is approximately 7 A.






(e) Check that the current increases up to approximately 14.5 A or more when the window stops going down.

HINT: The circuit breaker opens some 4 - 40 seconds after the window stops going down. so check must be made before the circuit breaker operates.

If operation is as specified, replace the driver door ECU.