LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2009 >> Taurus X SEL, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1384 (Windows & Glass - Glass, Frames & Mechanisms) >> Diagnostic Tests >> Glass, Frames & Mechanisms >> Pinpoint Tests >> Pinpoint Test B: A Single Power Window is Inoperative - Driver

Pinpoint Test B: A Single Power Window is Inoperative - Driver

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Power Windows for schematic and connector information.

Normal Operation 

When the driver window is operated in the down direction, voltage is supplied to the driver window motor from the driver window control switch on circuit 227 (YE) and ground is supplied on through circuit 226 (WH/BK). When the driver window is operated in the up direction, voltage is supplied on circuit 226 (WH/BK) and ground through circuit 227 (YE).

This pinpoint test is intended to diagnose the following:

PINPOINT TEST B: A SINGLE POWER WINDOW IS INOPERATIVE - DRIVER 

  1. B1 CHECK FOR A SHORTED DRIVER WINDOW CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: Driver Window Control Switch C504a, C504b
    • Check the driver window control switch. Refer to MASTER WINDOW ADJUST SWITCH article.
    • Does the driver window control switch pass the component test? 
    1. YES  : Go to  B2.
    2. NO  : INSTALL a new driver window control switch. REFER to Window Control Switch . TEST the system for normal operation.
  2. B2 CHECK CIRCUIT 227 (YE) FOR AN OPEN OR SHORT TO GROUND 
    • Disconnect: Driver Window Motor C524
      • Fig 1: Checking Circuit For Open Or Short To Ground
      GF0013144Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver window control switch C504a-6, circuit 227 (YE), harness side and driver window motor C524-2, circuit 227 (YE), harness side; and between driver window control switch C504a-6, circuit 227 (YE), harness side and ground.
    • Is the resistance less than 5 ohms between the switch and motor, and greater than 10,000 ohms between the switch and ground? 
    1. YES  : Go to  B3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. B3 CHECK CIRCUIT 226 (WH/BK) FOR AN OPEN OR SHORT TO GROUND 
      Fig 2: Checking Circuit For Open Or Short To Ground
      GF0013145Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver window control switch C504a-5, circuit 226 (WH/BK), harness side and driver window motor C524-1, circuit 226 (WH/BK), harness side; and between driver window control switch C504a-5, circuit 226 (WH/BK), harness side and ground.
    • Is the resistance less than 5 ohms between the switch and motor, and greater than 10,000 ohms between the switch and ground? 
    1. YES  : INSTALL a new driver window regulator motor. REFER to Window Regulator Motor - Front Door .
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
scientia non olet · About LEMON Manuals