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

B1 CHECK THE POWER TO THE WINDOW MOTOR
- Key in OFF position.
- 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?
1. YES : Go to B2.
2. 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 appropriate System Wiring Diagrams article 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.
B2 CHECK THE LH FRONT WINDOW MOTOR DELAYED ACCESSORY FEED
- Key in ON position.
- Measure the voltage between LH front window motor C524-3, circuit CBP41 (BU), harness side and ground.
- Is the voltage greater than 10 volts?
1. YES : Go to B3.
2. 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 appropriate System Wiring Diagrams article 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.
B3 CHECK THE LH FRONT WINDOW MOTOR GROUND
- Key in OFF position.
- Measure the resistance between LH front window motor C524-4, circuit GD133 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
1. YES : Go to B4.
2. NO : REPAIR the circuit. DE-INITIALIZE, then INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.

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:

LH Front Window Motor	Circuit	LH Front Window Control Switch
C524-5	CPW11 (BU/GY)	C504b-2
C524-6	CPW10 (YE/VT)	C504b-6
C524-2	CPW29 (VT/GY)	C504b-3

Fig 4: Measuring Resistance

Courtesy of FORD MOTOR CO.

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.

B5 CHECK THE LH FRONT WINDOW CONTROL SWITCH
- Carry out the LH Front Window Control Switch Component Test. Refer to COMPONENT TESTING article.
- Did the window control switch pass the component test?
1. YES : INSTALL a new LH front window motor. REFER to Glass, Frames and Mechanisms - Exploded View, Front Door and Window Regulator Motor . INITIALIZE the LH front window motor. REFER to Window Motor Initialization . TEST the system for normal operation.
2. 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.