Pinpoint Test B: A Single Power Window Is Inoperative - Driver

Glass, Frames and Mechanisms

Pinpoint Test B: A Single Power Window is Inoperative - Driver

Refer to Wiring Diagram Set 100, Power Windows for schematic and connector information. Diagrams By Number

Normal Operation

When the driver window is operated in the down direction, voltage is supplied to the driver window motor from the driver window control switch on circuit 227 (YE) and ground is supplied on through circuit 226 (WH/BK). When the driver window is operated in the up direction, voltage is supplied on circuit 226 (WH/BK) and ground through circuit 227 (YE).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Driver window control switch
- Driver window motor



PINPOINT TEST B: A SINGLE POWER WINDOW IS INOPERATIVE - DRIVER

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B1 CHECK FOR A SHORTED DRIVER WINDOW CONTROL SWITCH


- Ignition OFF.
- Disconnect: Driver Window Control Switch C504a, C504b.
- Carry out the driver window control switch component test.

- Does the driver window control switch pass the component test?

Yes
GO to B2.

No
INSTALL a new driver window control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.

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B2 CHECK CIRCUIT 227 (YE) FOR AN OPEN OR SHORT TO GROUND


- Disconnect: Driver Window Motor C524.
- Measure the resistance between driver window control switch C504b-1, circuit 227 (YE), harness side and driver window motor C524-2, circuit 227 (YE), harness side; and between driver window control switch C504b-1, circuit 227 (YE), harness side and ground.




- Is the resistance less than 5 ohms between the switch and motor; and greater than 10,000 ohms between the switch and ground?

Yes
GO to B3.

No
REPAIR the circuit. TEST the system for normal operation.

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B3 CHECK CIRCUIT 226 (WH/BK) FOR AN OPEN OR SHORT TO GROUND


- Measure the resistance between driver window control switch C504b-5, circuit 226 (WH/BK), harness side and driver window motor C524-1, circuit 226 (WH/BK), harness side; and between driver window control switch C504b-5, circuit 226 (WH/BK), harness side and ground.




- Is the resistance less than 5 ohms between the switch and motor; and greater than 10,000 ohms between the switch and ground?

Yes
INSTALL a new driver window regulator motor. REFER to Window Regulator Motor - Front Door Window Regulator Motor - Front Door.

No
REPAIR the circuit. TEST the system for normal operation.

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