Pinpoint Test E: A Single Power Window Is Inoperative - LH Front

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test E: A Single Power Window is Inoperative - Fusion, Milan, LH Front

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

NOTE: A new LH front power window motor will not operate in one-touch up mode until initialized. Refer to Window Motor Initialization .

NOTE: The LH front power window motor must be initialized whenever a new motor is installed.

NOTE: The LH front power window motor must be de-initialized, then initialized whenever the LH front window motor is removed from the window regulator drum housing, a new window regulator is installed, a new window glass is installed, a new top run is installed or for any operation in which grease or lubricants are applied to the window regulator or glass run.

Normal Operation

Under normal operation, the LH front power window control switch receives power from the accessory delay relay through circuit CBP47 (GN/BU). The LH window motor receives battery power through circuit SBP01 (RD) at all times and ground through circuit GD126 (BK/WH). When the LH front window control switch is pulled, a voltage signal is sent to the LH front window motor through circuit CPW11 (BU/GY) which causes the window to move upward. When the LH front window control switch is pressed, a voltage signal is sent to the LH front window motor through circuit CPW10 (YE/VT) which causes the window to move downward.

This pinpoint test is intended to diagnose the following:
- LH front window motor not initialized
- Fuse
- Wiring, terminals or connectors
- LH front window motor
- LH front window control switch



PINPOINT TEST E: A SINGLE POWER WINDOW IS INOPERATIVE - FUSION, MILAN, LH FRONT

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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E1 CHECK THE POWER TO THE WINDOW MOTOR


- Ignition OFF.
- Disconnect: LH Front Window Motor C540.
- Measure the voltage between LH front window motor C540-4, circuit SBP01 (RD), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to E2.

No
VERIFY Smart Junction Box (SJB) fuse 1 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Diagrams By Number. DE-INITIALIZE,
then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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E2 CHECK THE LH FRONT WINDOW MOTOR GROUND


- Ignition OFF.
- Measure the resistance between LH front window motor C540-3, circuit GD126 (BK/WH), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
GO to E3.

No
REPAIR the circuit. DE-INITIALIZE then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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E3 CHECK THE LH FRONT WINDOW CONTROL SWITCH-TO-LH FRONT WINDOW MOTOR FEEDS


- Disconnect: LH Front Window Control Switch C537A.
- Measure the resistance between LH front window motor C540-1, circuit CPW10 (YE/VT), harness side and LH front window control switch C537A-1, circuit CPW10 (YE/VT), harness side.




- Measure the resistance between LH front window motor C540-6, circuit CPW11 (BU/GY), harness side and LH front window control switch C537A-5, circuit CPW11 (BU/GY), harness side.




- Is the resistance less than 5 ohms?

Yes
GO to E4.

No
REPAIR the circuit. DE-INITIALIZE then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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E4 CHECK THE LH FRONT WINDOW CONTROL SWITCH


- Carry out the LH front window control switch component test.

- Did the LH front window control switch pass the component test?

Yes
INSTALL a new LH front window motor. REFER to Window Regulator and Motor - Front Door Window Regulator and Motor - Front Door. INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

No
INSTALL a new LH front window control switch. REFER to Window Control Switch Service and Repair. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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