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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 185 (Seat System) >> Diagnosis And Testing >> Seats >> Pinpoint Tests >> Pinpoint Test O: The Driver Heated Seat Is Inoperative - Seat Does Heat But The Heated Seat Indicator Does Not Illuminate >> Testing

Pinpoint Test O: The Driver Heated Seat Is Inoperative - Seat Does Heat But The Heated Seat Indicator Does Not Illuminate: Testing

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
  1. O1 CHECK CIRCUITS 580 (BN) AND 579 (BK/OG) FOR A SHORT TO GROUND 
    WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards.
    NOTE: If a seat equipped with a supplemental restraint system (SRS) component is being serviced, the SRS must be depowered.  Refer to SUPPLEMENTAL RESTRAINT SYSTEM .
    NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
    NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
    • Key in OFF position.
      • WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected.
    • For vehicles equipped with seat side air bags, carry out the following:
      • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of SUPPLEMENTAL RESTRAINT SYSTEM .
      • Disconnect driver seat side air bag C3226.
      • Connect restraint system diagnostic tool 418-133 to driver seat side air bag C3226.
      • Connect the battery ground cable.
    • Disconnect: EATC Module C228b.
    • Disconnect: Driver Heated Seat Module C359.
    • Measure the resistance between EATC module C228b pin 7, circuit 580 (BN), harness side and ground; and between EATC module C228b pin 8, circuit 579 (BK/OG), harness side and ground.
      Fig 1: Measuring Resistance Between EATC Module C228B Pin 7 And Ground
      G03988864Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 

    Result/ Action to Take 

    • Yes  : GO to O2.
    • No  : REPAIR the affected circuit. TEST the system for normal operation.

      For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C3226. CONNECT driver seat side air bag module C3226. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  2. O2 CHECK CIRCUITS 580 (BN) AND 579 (BK/OG) FOR AN OPEN 
    • Key in ON position.
    • Measure the resistance between EATC module C228b pin 7, circuit 580 (BN), harness side and driver heated seat module C359 pin 9, circuit 580 (BN), harness side; and between EATC module C228b pin 8, circuit 579 (BK/OG), harness side and driver heated seat module C359 pin 10, circuit 579 (BK/OG), harness side.
      Fig 2: Checking Circuits 580 (BN) And 579 (BK/OG) For Open
      G03988865Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : GO to O3.
    • No  : REPAIR the affected circuit. TEST the system for normal operation.

      For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C3226. CONNECT driver seat side air bag module C3226. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  3. O3 CHECK THE HEATED SEAT MODULE HI INDICATOR ON THE EATC MODULE 
    • Connect: EATC Module C228b.
    • Key in ON position.
    • Connect a fused jumper lead between driver heated seat module C359 pin 10, circuit 579 (BK/OG), harness side and C359 pin 12, circuit 1048 (LB/WH), harness side.
      Fig 3: Checking Heated Seat Module HI Indicator On EATC Module
      G03966159Courtesy of FORD MOTOR CO.
    • Do both driver heated seat indicator LEDs illuminate on the EATC module? 
    • Yes  : GO to O4.
    • No  : INSTALL a new EATC module. REFER to CONTROL COMPONENTS . TEST the system for normal operation.

      For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C3226. CONNECT driver seat side air bag module C3226. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  4. O4 CHECK THE HEATED SEAT MODULE HI INDICATOR ON THE EATC MODULE 
    • Connect a fused jumper lead between driver heated seat module C359 pin 9, circuit 580 (BN), harness side and C359 pin 12, circuit 1048 (LB/WH), harness side.
      Fig 4: Checking Heated Seat Module HI Indicator On EATC Module
      G03966160Courtesy of FORD MOTOR CO.
    • Does only the left driver heated seat indicator LED illuminate on the EATC module? 
    • Yes  : INSTALL a new driver heated seat module. TEST the system for normal operation.

      For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C3226. CONNECT driver seat side air bag module C3226. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    • No  : INSTALL a new EATC module. REFER to CONTROL COMPONENTS . TEST the system for normal operation.

      For vehicles equipped with seat side air bags, DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C3226. CONNECT driver seat side air bag module C3226. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

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