Pinpoint Test A: All The Power Windows Are Inoperative

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test A: All the Power Windows are Inoperative

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

Normal Operation

With the key in the ACC or RUN position the voltage is supplied to the coil side of the accessory delay relay through circuit 964 (DB/LG). When the accessory delay relay is energized, battery voltage is supplied to the driver window control switch on circuit 193 (YE/LG). The driver window control switch provides voltage and ground to all other window control switches. The driver window control switch is grounded through circuit 57 (BK).

This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Circuit breaker
- Wiring, terminals or connectors
- Accessory delay relay
- Driver window control switch

PINPOINT TEST A: ALL THE POWER WINDOWS ARE INOPERATIVE

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A1 CHECK CIRCUIT 193 (YE/LG) FOR VOLTAGE


- Disconnect: Driver Window Control Switch C504b.
- Ignition ON.
- Measure the voltage between driver window control switch C504b-2, circuit 193 (YE/LG), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to A2.

No
GO to A3.

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A2 CHECK CIRCUIT 57 (BK) FOR AN OPEN


- Disconnect: Driver Window Control Switch C504a.
- Measure the resistance between driver window control switch C504a-7, circuit 57 (BK), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new driver 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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A3 CHECK CIRCUIT 193 (YE/LG) FOR AN OPEN OR A SHORT TO GROUND


- Disconnect: Accessory Delay Relay.
- Measure the resistance between driver window control switch C504b-2, circuit 193 (YE/LG), harness side and the accessory delay relay pin 87, circuit 193 (YE/LG), harness side; and between driver window control switch C504b-2, circuit 193 (YE/LG), harness side and ground.




- Is the resistance less than 5 ohms between the driver window control switch and the accessory relay; and greater than 10,000 ohms between the driver window control switch and ground?

Yes
GO to A4.

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

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A4 CHECK CIRCUIT 768 (BN/YE) FOR VOLTAGE


- Measure the voltage between accessory delay relay pin 30, circuit 768 (BN/YE), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to A5.

No
VERIFY the Battery Junction Box (BJB) circuit breaker 602 (20A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. If not OK, REFER to Wiring Diagrams to identify the possible causes of the circuit short. REPAIR the circuit. TEST the system for normal operation. Diagrams By Number

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A5 CHECK CIRCUIT 964 (DB/LG) FOR VOLTAGE


- Measure the voltage between accessory delay relay pin 86, circuit 964 (DB/LG), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to A6.

No
VERIFY the Central Junction Box (CJB) fuse 9 (7.5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. If not OK, REFER to Wiring Diagrams to identify the possible causes of the circuit short. REPAIR the circuit. TEST the system for normal operation. Diagrams By Number

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A6 CHECK THE ACCESSORY DELAY RELAY CIRCUIT 57 (BK) FOR AN OPEN


- Measure the resistance between accessory delay relay pin 85, circuit 57 (BK), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new accessory delay relay. TEST the system for normal operation.

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

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