Pinpoint Test B: All Power Windows Are Inoperative - Fusion, Milan

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test B: All Power Windows are Inoperative - Fusion, Milan

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 CPW30 (GY/YE), which is the accessory delay relay output from the Smart Junction Box (SJB). The accessory delay relay is integral to the SJB module. The LH front power window control switch is grounded to the chassis through circuit CD126 (BK/WH).

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



PINPOINT TEST B: ALL POWER WINDOWS ARE INOPERATIVE - FUSION, MILAN

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B1 CHECK CIRCUIT CPW30 (GY/YE) FOR VOLTAGE


- Disconnect: LH Front Window Control Switch C537A.
- Ignition ON.
- Measure the voltage between LH front window control switch C537A-2, circuit CPW30 (GY/YE), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to B3.

No
GO to B2.

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B2 CHECK CIRCUIT CPW30 (GY/YE) FOR AN OPEN


- Ignition OFF.
- Disconnect: SJB C2280E.
- Measure the resistance between LH front window control switch C537A-2, circuit CPW30 (GY/YE), harness side and SJB C2280E-4, circuit CPW30 (GY/YE), harness side.




- Is the resistance less than 5 ohms?

Yes
Go To Pinpoint Test N to diagnose the accessory delay relay circuit. Pinpoint Test N: The Delayed Accessory is Inoperative/Does Not Operate Correctly

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

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B3 CHECK CIRCUIT GD126 (BK/WH) FOR AN OPEN


- Ignition OFF.
- Disconnect: LH Front Window Control Switch C537B.
- Measure the resistance between LH front window control switch C537B-7, circuit GD126 (BK/WH), 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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