Pinpoint Test A: All Passenger Power Windows are Inoperative - LH and RH Rear

Glass, Frames and Mechanisms

Pinpoint Test A: All Passenger Power Windows are Inoperative - MKZ, LH and RH Rear

Refer to Wiring Diagram Set 100, Power Windows for schematic and connector information. [1][2]Diagrams By Number

Normal Operation

Under normal operation, the accessory delay relay supplies voltage to the master window control switch. When the master window lockout control switch is in the UNLOCK position, voltage is supplied to the LH and RH rear window control switches. The master window control switch supplies the ground circuit for passenger rear window operation.

This pinpoint test is intended to diagnose the following:

- Circuit breaker

- Wiring, terminals or connectors

- Window control switch

PINPOINT TEST A : ALL PASSENGER POWER WINDOWS ARE INOPERATIVE - MKZ, LH AND RH REAR

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.

NOTE: Before performing this pinpoint test, make sure the master window lockout control switch is in the UNLOCK position.

A1 CHECK FOR VOLTAGE TO MASTER WINDOW CONTROL SWITCH

- Disconnect: Master Window Control Switch C535B.

- Ignition ON.

- Measure the voltage between master window control switch C535B-3, circuit CBP47 (GN/BU), harness side and ground.





Is the voltage greater than 10 volts?

Yes
GO to A2.

No
VERIFY SJB (Smart Junction Box) circuit breaker 47 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.

If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation. [1][2]Diagrams By Number

A2 CHECK THE MASTER WINDOW CONTROL SWITCH GROUND CIRCUIT

- Ignition OFF.

- Measure the resistance between master window control switch C535B-6, circuit GD126 (BK/WH), harness side and ground.





Is the resistance less than 5 ohms?

Yes
GO to A3.

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

A3 CHECK THE MASTER WINDOW CONTROL SWITCH

- Carry out the master window control switch component test.

Did the master window control switch pass the component test?

Yes
REPAIR circuit CPW14 (VT/WH) for an open. TEST the system for normal operation.

No
INSTALL a new master window control switch. REFER to Window Control Switch . TEST the system for normal operation.