Pinpoint Test
- CHECK THE POWER TO THE WINDOW MOTOR
- Ignition OFF.
- Disconnect: LH Front Window Motor C524.
- Measure:
LH Front Window Motor Ground C524 Ground Pin Circuit Measurement / Action Pin Circuit 1 SBP01 (RD) - Ground
Is the voltage greater than 11 volts?
- Yes: GO to 2 .
- No: VERIFY BCM fuse 1 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the appropriate wiring diagrams to identify the possible causes of the circuit short. REFER to OEM FUSE AND RELAY INFORMATION and OEM WIRING DIAGRAMS . DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization .
- CHECK THE LH FRONT WINDOW MOTOR DELAYED ACCESSORY FEED
- Ignition ON.
- Measure:
LH Front Window Motor Ground C524 Ground Pin Circuit Measurement / Action Pin Circuit 3 CBP32 (GN/VT) - Ground
Is the voltage greater than 11 volts?
- Yes: GO to 3 .
- No: VERIFY BCM fuse 32 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the appropriate wiring diagrams to identify the possible causes of the circuit short. REFER to OEM FUSE AND RELAY INFORMATION and OEM WIRING DIAGRAMS . DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization .
- CHECK THE LH FRONT WINDOW MOTOR GROUND
- Ignition OFF.
- Measure:
LH Front Window Motor Ground C524 Ground Pin Circuit Measurement / Action Pin Circuit 2 GD233 (BK) - Ground
Is the resistance less than 3 ohms?
- Yes: GO to 4 .
- No: REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization .
- CHECK THE VOLTAGE SIGNAL FROM THE LH FRONT WINDOW CONTROL SWITCH
- Ignition ON.
- While pressing and releasing the LH front window control switch, measure:
LH Front Window Motor Ground C524 Ground Pin Circuit Measurement / Action Pin Circuit 4 (UP) CPW11 (BU/GY) - Ground 5 (DOWN) CPW10 (YE/OG) - Ground
Is the voltage greater than 11 volts when the LH front window control switch is pressed; and 0 volt when the switch is released?
- Yes: INSTALL a new LH front window regulator motor. REFER to Window Regulator Motor - Front Door . INITIALIZE the LH front window motor. REFER to Window Motor Initialization .
- No: If voltage was less than 11 volts when the switch was pressed, GO to 5
.
If voltage was greater than 0 volt when the switch was released, GO to 6.
- CHECK FOR AN OPEN BETWEEN THE LH FRONT WINDOW CONTROL SWITCH AND THE WINDOW MOTOR
- Ignition OFF.
- Disconnect: LH Front Window Control Switch.
- Measure:
LH Front Window Motor LH Front Window Control Switch C524 C504 Pin Circuit Measurement / Action Pin Circuit 4 CPW11 (BU/GY) 17 CPW11 (BU/GY) 5 CPW10 (YE/OG) 18 CPW10 (YE/OG)
Are the resistances less than 3 ohms?
- Yes: INSTALL a new LH front window control switch. REFER to Window Control Switch . INITIALIZE the LH front window motor. REFER to Window Motor Initialization .
- No: REPAIR the affected circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization .
- CHECK THE LH FRONT WINDOW CONTROL SWITCH CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: LH Front Window Control Switch.
- Ignition ON.
- Measure:
LH Front Window Motor Ground C524 Ground Pin Circuit Measurement / Action Pin Circuit 4 (UP) CPW11 (BU/GY) - Ground 5 (DOWN) CPW10 (YE/OG) - Ground
Is any voltage present?
- Yes: REPAIR the affected circuit. INITIALIZE the LH front window motor. REFER to Window Motor Initialization .
- 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 .