Pinpoint Test B: All Power Windows are Inoperative

Glass, Frames and Mechanisms

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

Refer to Wiring Diagram Set 100 (Fusion/Milan/MKZ, Fusion Hybrid, Milan Hybrid, MKZ Hybrid), Power Windows for schematic and connector information. Diagrams By Number

Normal Operation

Under normal operation, the accessory delay relay supplies voltage to the master window control switch. The master window control switch supplies the ground circuit for passenger rear window operation. On vehicles not equipped with RH front window one-touch up/down feature, this ground circuit is shared with the LH front window motor.

This pinpoint test is intended to diagnose the following:
- Accessory delay relay
- Circuit breaker
- Wiring, terminals or connectors
- Window control switch


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

NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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B1 CHECK FOR VOLTAGE TO MASTER WINDOW CONTROL SWITCH

- Disconnect: Master Window Control Switch C535A (if RH front window is equipped with one-touch up/down) or C537A (if RH front window is not equipped with one-touch up/down).
- Ignition ON.
- Measure the voltage between master window control switch C535A-3 or C537A-2, circuit CBP47 (GN/BU), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
For vehicles not equipped with RH front window one-touch up/down feature, GO to B2. For vehicles equipped with RH front window one-touch up/down feature, INSTALL a new master window control switch. REFER to Window Control Switch Service and Repair. TEST the system for normal operation.

No
VERIFY SJB circuit breaker 47 (30A) is OK. If OK, GO to Pinpoint Test O to diagnose the accessory delay relay circuit. Pinpoint Test O: The Defrost System Will Not Shut Off Automatically

If not OK, Refer to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation. Diagrams By Number

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B2 CHECK THE MASTER WINDOW CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

- Ignition OFF.
- Disconnect: Master Window Control Switch C537B.
- Measure the resistance between master window control switch C537B-7, circuit GD126 (BK/WH), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new master 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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