Pinpoint Test A: All Power Windows Are Inoperative

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test A: All Power Windows are Inoperative

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

Normal Operation

Under normal operation, the LH front power window control switch receives power through circuit CBP47 (GN/BU), which is the accessory delay relay output from the Smart Junction Box (SJB). The accessory delay relay is integral to the SJB. The LH front power window control switch is grounded to the chassis through circuit GD133 (BK).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- LH front window control switch
- SJB



PINPOINT TEST A: ALL POWER WINDOWS ARE INOPERATIVE

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A1 CHECK CIRCUIT CBP47 (GN/BU) FOR VOLTAGE


- Disconnect: LH Front Window Control Switch C504a.
- Ignition ON.
- Measure the voltage between LH front window control switch C504a-5, circuit CBP47 (GN/BU), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to A3.

No
GO to A2.

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A2 CHECK CIRCUIT CBP47 (GN/BU) FOR AN OPEN


- Ignition OFF.
- Disconnect: SJB C2280d.
- Measure the resistance between LH front window control switch C504a-5, circuit CBP47 (GN/BU), harness side and SJB C2280d-32, circuit CBP47 (GN/BU), harness side.




- Is the resistance less than 5 ohms?

Yes
Go To Pinpoint Test H to diagnose the accessory delay relay circuit. Pinpoint Test H: The Delayed Accessory Is Inoperative

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

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A3 CHECK CIRCUIT GD133 (BK) FOR AN OPEN


- Disconnect: LH Front Window Control Switch C504b.
- Measure the resistance between LH front window control switch C504b-4, circuit GD133 (BK), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new LH front window control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.

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

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