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

Glass, Frames and Mechanisms

Pinpoint Tests

Pinpoint Test B: A Single Power Window is Inoperative - LH Front

Refer to Wiring Diagram Set 100, 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) and is grounded to chassis through circuit GD133 (BK). When the LH front window control switch is operated in the UP position, the LH front window motor receives power through circuit CPW11 (BU/GY). When the LH front window control switch is operated in the DOWN position, the LH front window motor receives power through circuit CPW10 (YE/VT). When the LH front window motor receives a ground signal on circuit CPW29 (VT/GY), the LH front window motor will enter one-touch up/down mode. The LH window motor receives battery power through circuit SBP01 (RD) at all times, and delayed accessory power through circuit CBP41 (BU) when the key is ON and the delayed accessory feature is active.

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



PINPOINT TEST B: A SINGLE POWER WINDOW IS INOPERATIVE - LH FRONT

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B1 CHECK THE POWER TO THE WINDOW MOTOR


- Ignition OFF.
- Disconnect: LH Front Window Motor C524.
- Measure the voltage between LH front window motor C524-1, circuit SBP01 (RD), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to B2.

No
VERIFY Smart Junction Box (SJB) 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. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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B2 CHECK THE LH FRONT WINDOW MOTOR DELAYED ACCESSORY FEED


- Ignition ON.
- Measure the voltage between LH front window motor C524-3, circuit CBP41 (BU), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to B3.

No
VERIFY SJB fuse 41 (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. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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B3 CHECK THE LH FRONT WINDOW MOTOR GROUND


- Ignition OFF.
- Measure the resistance between LH front window motor C524-4, circuit GD133 (BK), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
GO to B4.

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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B4 CHECK THE LH FRONT WINDOW CONTROL SWITCH-TO-LH FRONT WINDOW MOTOR FEEDS


- Disconnect: LH Front Window Control Switch C504b.
- Measure the resistance between LH front window motor C524, harness side and LH front window control switch C504b, harness side using the following chart:









- Are the resistances less than 5 ohms?

Yes
GO to B5.

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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B5 CHECK THE LH FRONT WINDOW CONTROL SWITCH


- Carry out the LH Front Window Control Switch Component Test.

- Did the window control switch pass the component test?

Yes
INSTALL a new LH front window motor. REFER to Glass, Frames and Mechanisms - Exploded View, Front Door Glass, Frames and Mechanisms - Exploded View, Front Door and Window Regulator Motor 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 Service and Repair. INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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