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

Glass, Frames and Mechanisms

Pinpoint Test D: A Single Power Window is Inoperative - LH Front, Edge

Refer to Wiring Diagram Set 100, Power Windows for schematic and connector information Electrical Diagrams.

NOTE: A new LH front window motor cannot operate in one-touch up or one-touch down mode until initialized. Refer to Window Motor Initialization .

NOTE: De-initialize, then initialize the front window motor when any of the following occur:

- the LH or RH (MKX) or LH (Edge) front window motor is removed from the window regulator drum housing
- a new window regulator and/or motor is installed
- a new window glass is installed
- a new top run is installed
- any operation in which grease or lubricants are applied to the window regulator or glass run

Normal Operation

Under normal operation, voltage is supplied to the LH front window control switch and LH front window motor from the accessory delay relay. The LH front window motor has dedicated high current voltage and ground circuits. When the LH front window control switch is activated, a low current voltage signal is supplied to the LH front window motor which causes the window to move upward or downward. When the LH front window control switch is pressed or pulled to the second detent position (AUTO), a ground signal is provided to the LH front window motor to request the one-touch up/down operation.

This pinpoint test is intended to diagnose the following:

- Fuse(s)

- Wiring, terminals or connectors

- Window control switch

- Power window motor

PINPOINT TEST D : A SINGLE POWER WINDOW IS INOPERATIVE - LH FRONT, EDGE

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.

D1 CHECK THE POWER TO THE WINDOW MOTOR

- Disconnect: LH Front Window Motor C540.

- Measure the voltage between LH front window motor C540-1, circuit SBP01 (RD), harness side and ground.






Is the voltage greater than 10 volts?

Yes
GO to D2.

No
VERIFY Body Control Module (BCM) fuse 1 (30A) is OK. If OK, REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Electrical Diagrams. REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

D2 CHECK THE LOGIC POWER TO THE WINDOW MOTOR

- Ignition ON.

- Measure the voltage between LH front window motor C540-3, circuit CBP32 (GN/VT), harness side and ground.






Is the voltage greater than 10 volts?

Yes
GO to D3.

No
VERIFY Body Control Module (BCM) fuse 32 (15A) is OK. If OK, REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Electrical Diagrams. REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

D3 CHECK THE WINDOW MOTOR GROUND CIRCUIT FOR AN OPEN

- Ignition OFF.

- Measure the resistance between LH front window motor C540-4, circuit GD133 (BK), harness side and ground.






Is the resistance less than 5 ohms?

Yes
GO to D4.

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

D4 CHECK THE LH FRONT WINDOW CONTROL SWITCH TO LH FRONT WINDOW MOTOR FEEDS

- Disconnect: LH Front Window Control Switch C504A.

- Measure the resistance between LH front window motor C540-6, circuit CPW10 (YE/VT), harness side and LH front window control switch C504A-1, circuit CPW10 (YE/VT), harness side.






- Measure the resistance between LH front window motor C540-2, circuit CPW29 (VT/GY), harness side and LH front window control switch C504A-7, circuit CPW29 (VT/GY), harness side.






- Measure the resistance between LH front window motor C540-5, circuit CPW11 (BU/GY), harness side and LH front window control switch C504A-5, circuit CPW11 (BU/GY), harness side.






Is the resistance less than 5 ohms?

Yes
GO to D5.

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

D5 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 Motor . 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 . INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.