Pinpoint Test B: All Power Windows Are Inoperative

Glass, Frames and Mechanisms

Pinpoint Tests

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

Refer to Wiring Diagram Set 100 (Fusion/Milan/MKZ, Fusion Hybrid/Milan Hybrid), 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). This is the only shared circuit between all front and rear power windows.

This pinpoint test is intended to diagnose the following:
- Accessory delay relay
- Circuit breaker
- Wiring, terminals or connectors
- LH front 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 VOLTAGE FEED TO LH FRONT WINDOW CONTROL SWITCH


- Disconnect: LH Front Window Control Switch C537A.
- Ignition ON.
- Measure the voltage between LH front window control switch C537A-2, circuit CBP47 (GN/BU), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
INSTALL a new LH front 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 Delayed Accessory Is Inoperative

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

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