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Pinpoint Test G: The Delayed Accessory Does Not Turn Off

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 

The delayed accessory feature allows the power windows, radio and roof opening panel (if equipped) to function for up to 10 minutes after the ignition is turned off or until any door is opened. The delayed accessory function is controlled by the lighting control module (LCM). The LCM, when awake, supplies a ground for the accessory delay relay coil through circuit 194 (PK). When the ignition switch is turned from ON to OFF, the LCM begins the timing sequence. If a door is opened, the LCM turns off the accessory delay function. If the ignition switch is turned to another position, the LCM also cancels the delayed accessory function.

This pinpoint test is intended to diagnose the following:

PINPOINT TEST G: THE DELAYED ACCESSORY DOES NOT TURN OFF 

  1. G1 CHECK THE LCM 10 MINUTE TIMER FOR CORRECT OPERATION 
    NOTE: The key should be cycled by reaching through the driver side window.
    • Open the driver window and close all doors.
    • Key in ON position.
    • Key in OFF position.
    • Disconnect: Accessory Delay Relay
      • Fig 1: Checking Accessory Delay Relay Operation
      GF0018608Courtesy of FORD MOTOR CO.
    • Measure the resistance between accessory delay relay pin 85, circuit 194 (PK), harness side and ground.
    • Wait 10 minutes.
    • Is the resistance less than 60 ohms for 10 minutes, then cycle to greater than 10,000 ohms? 
    1. YES  : Go to  G2.
    2. NO  : Go to  G3.
  2. G2 CHECK CIRCUIT 193 (YE/LG) FOR A SHORT TO VOLTAGE 
      Fig 2: Checking Circuit For Short To Voltage or Open
      GF0018607Courtesy of FORD MOTOR CO.
    • Measure the voltage between accessory delay relay pin 30, circuit 193 (YE/LG), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : REPAIR the circuit. TEST the system for normal operation.
    2. NO  : INSTALL a new accessory delay relay. TEST the system for normal operation.
  3. G3 CHECK CIRCUIT 194 (PK) FOR A SHORT TO GROUND 
    • Disconnect: LCM C2145b
      • Fig 3: Checking Accessory Delay Relay Operation
      GF0018608Courtesy of FORD MOTOR CO.
    • Measure the resistance between accessory delay relay pin 85, circuit 194 (PK), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  G4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. G4 CHECK FOR CORRECT LCM OPERATION 
    • Disconnect all LCM connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
    • Connect all LCM connectors and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new LCM. REFER to MULTIFU↓NCTION ELECTRONIC MODULES article.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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