LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1447 (Windows And Glass - Glass, Frames And Mechanisms) >> Diagnostic Tests >> Glass, Frames & Mechanisms >> Pinpoint Tests >> Pinpoint Test A: All Power Windows are Inoperative

Pinpoint Test A: All Power Windows are Inoperative

WARNING: This page is about a different car, the 2010 Lincoln Town Car. 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 accessory delay relay is energized, battery voltage is supplied to the driver window control switch on circuit 193 (YE/LG). Operation of the accessory delay relay is controlled by the lighting control module (LCM) through circuit 194 (PK). Voltage is then distributed to the front and rear passenger window control switches from the driver window control switch on circuit 170 (RD/LB). The front and rear passenger window control switches are grounded back to the driver window control switch on circuits 313 (WH/YE), 314 (TN/LB), 316 (YE/LB), 317 (BY/OG), 319 (YE/BK) and 320 (RD/BK). The driver window control switch is grounded through circuit 57 (BK).

This pinpoint test is intended to diagnose the following:

PINPOINT TEST A: ALL POWER WINDOWS ARE INOPERATIVE 

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. A1 CHECK CIRCUIT 193 (YE/LG) FOR VOLTAGE 
    • Disconnect: Driver Window Control Switch C504b
    • Key in ON position.
      • Fig 1: Measuring Voltage
      GF0047508Courtesy of FORD MOTOR CO.
    • Measure the voltage between driver window control switch C504b-8, circuit 193 (YE/LG), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A2.
    2. NO  : Go to  A3.
  2. A2 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
      Fig 2: Measuring Resistance
      GF0047509Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver window control switch C504b-5, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new driver window control switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. A3 CHECK CIRCUIT 193 (YE/LG) FOR AN OPEN OR SHORT TO GROUND 
    • Disconnect: Central Junction Box (CJB) Accessory Delay Relay
      • Fig 3: Measuring Resistance
      GF0047510Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver window control switch C504b-8, circuit 193 (YE/LG), harness side and ground; and between driver window control switch C504b-8, circuit 193 (YE/LG), harness side and the accessory delay relay pin 30, harness side.
    • Is the resistance greater than 10,000 ohms between the switch and ground; and less than 5 ohms between the switch and the relay? 
    1. YES  : Go to  A4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. A4 CHECK CIRCUITS 768 (BN/YE) AND 1567 (RD/LB) FOR VOLTAGE 
      Fig 4: Measuring Voltage
      GF0047511Courtesy of FORD MOTOR CO.
    • Measure the voltage between accessory delay relay pin 86, circuit 1567 (RD/LB), harness side and ground; and between accessory delay relay pin 87, circuit 768 (BN/YE), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A5.
    2. NO  : VERIFY battery junction box (BJB) circuit breaker 602 (20A) and CJB fuse 14 (15A) are OK. If OK, REPAIR the circuit. TEST the system for normal operation.
  5. A5 CHECK CIRCUIT 194 (PK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: LCM C2145b
      • Fig 5: Measuring Resistance
      GF0047512Courtesy of FORD MOTOR CO.
    • Measure the resistance between LCM C2145b-8, circuit 194 (PK), harness side and accessory delay relay pin 85, circuit 194 (PK), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A6.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. A6 CHECK THE ACCESSORY DELAY RELAY FOR CORRECT OPERATION 
    • Preform the Relay - Mini ISO component test for the accessory delay relay. Refer to COMPONENT TESTING .
    • Is the accessory delay relay OK? 
    1. YES  : Go to  A7.
    2. NO  : INSTALL a new accessory delay relay. TEST the system for normal operation.
  7. A7 CHECK THE LCM FOR CORRECT OPERATION 
    • Disconnect all LCM connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
    • Connect all LCM connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new LCM. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
scientia non olet · About LEMON Manuals