Pinpoint Test

CHECK REAR PASSENGER WINDOW OPERATION FROM THE LH FRONT WINDOW CONTROL SWITCH
NOTE: Make sure the LH front window control switch is in the UNLOCK position.
1. Ignition ON.
2. Attempt to operate the rear passenger windows from the LH front window control switch.
Do the rear passenger windows operate from the LH front window control switch?
- Yes: GO to 2 .
- No: For Base, REPAIR circuit CBP01 (BU) for an open.
  For XLT or Limited, GO to 3.

CHECK THE LH FRONT WINDOW CONTROL SWITCH LOCK-OUT CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect: LH Front Window Control Switch C504 (XLT, Limited) or C535A (Base).
Disconnect: LH Rear Window Control Switch.

Measure:

LH Rear Window Control Switch			LH Front Window Control Switch

C701			C535A (XLT, Limited) or C535A (Base)
Pin	Circuit	Measurement / Action	Pin	Circuit
5	CPW14 (VT/WH)		3	CPW14 (VT/WH)

Is the resistance less than 3 ohms?

Yes: INSTALL a new LH front window control switch. REFER to Window Control Switch .
No: REPAIR the circuit.

CHECK THE REAR WINDOW CONTROL SWITCH POWER FEED FOR AN OPEN OR SHORT TO GROUND

Ignition OFF.
Disconnect: BCM C2280D.
Disconnect: LH Rear Window Control Switch.

Measure:

LH Rear Window Control Switch			Ground

C701			Ground
Pin	Circuit	Measurement / Action	Pin	Circuit
1	CBP01 (BU)		-	Ground

Measure:

LH Rear Window Control Switch			BCM

C701			C2280D
Pin	Circuit	Measurement / Action	Pin	Circuit
1	CBP01 (BU)		27	CBP01 (BU)

Is the resistance greater than 10, 000 ohms between the window control switch and ground; and less than 3 ohms between the window control switch and BCM?

Yes: INSTALL a new BCM circuit breaker 48 (30A).
No: REPAIR the circuit.