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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Seat System - Seating) >> Diagnostic Tests >> Seats >> Pinpoint Tests >> Pinpoint Test F : The Power Seat Does Not Move Horizontally/Vertically - Driver >> Pinpoint Test F: The Power Seat Does Not Move Horizontally/Vertically - Driver

Pinpoint Test F: The Power Seat Does Not Move Horizontally/Vertically - Driver

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Remove restraint system diagnostic tools from the vehicle prior to road testing. If tools are not removed, the supplemental restraint system (SRS) device may not deploy in a crash. Failure to follow this instruction may result in serious personal injury or death in a crash and possibly violate vehicle safety standards.
NOTE: The air bag warning indicator illuminates when the restraints control module (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.
  1. F1 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION 
    • Operate the driver seat control switch to the forward and rearward positions.
    • Does the seat move horizontally? 
    1. YES  : Go to  F2.
    2. NO  : Go to  F9.
  2. F2 DETERMINE SEAT HEIGHT ADJUST FAILURE 
    • Determine the seat height adjust failure.
    • Does the seat front or rear height adjust up and down? 
    1. YES  : If only the front height adjust operates, go to  F3.

      If only the rear height adjust operates, go to  F6.

    2. NO  : INSTALL a new seat control switch. REFER to Seat Control Switch . TEST the system for normal operation.
  3. F3 CHECK VOLTAGE TO THE REAR HEIGHT MOTOR 
    • Key in OFF position.
    • 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 C367
    • Connect restraint system diagnostic tool 418-133 to driver seat side air bag C367.
    • Disconnect: Driver Power Seat Motor Assembly C353
      • WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
    • Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
      • Fig 1: Checking Voltage To Rear Height Motor
      GF0014755Courtesy of FORD MOTOR CO.
    • Measure the voltage between driver power seat motor assembly C353-8, circuit 983 (RD/LG) and C353-2, circuit 982 (YE/LG), harness side, while operating the seat control switch rear height up and down.
    • Is the voltage greater than 10 volts when the seat control switch is toggled in both directions and 0 volts in the rest position? 
    1. YES  : INSTALL a new power seat track. REFER to Seat Track - Power . TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : Go to  F4.
  4. F4 CHECK CIRCUIT 983 (RD/LG) FOR AN OPEN 
    • Disconnect: Driver Seat Control Switch C360
      • Fig 2: Checking Circuit 983 (RD/LG) For Open
      GF0014756Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver seat control switch C360-5, circuit 983 (RD/LG), harness side and driver power seat motor assembly C353-8, circuit 983 (RD/LG), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  F5.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  5. F5 CHECK CIRCUIT 982 (YE/LG) FOR AN OPEN 
      Fig 3: Checking Circuit 982 (YE/LG) For Open
      GF0014757Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver seat control switch C360-7, circuit 982 (YE/LG), harness side and driver power seat motor assembly C353-2, circuit 982 (YE/LG), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new driver seat control switch. REFER to Seat Control Switch . TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : REPAIR the circuit. TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  6. F6 CHECK VOLTAGE TO THE FRONT HEIGHT MOTOR 
    • Key in OFF position.
    • 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 C367
    • Connect restraint system diagnostic tool 418-133 to driver seat side air bag C367.
    • Disconnect: Driver Power Seat Motor Assembly C353
      • WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
    • Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
      • Fig 4: Checking Voltage To Front Height Motor
      GF0014758Courtesy of FORD MOTOR CO.
    • Measure the voltage between driver power seat motor assembly C353-1, circuit 979 (RD/LB) and C353-7, circuit 990 (YE/LB), harness side while operating the driver seat control switch front height up and down.
    • Is the voltage greater than 10 volts when the seat control switch is toggled in both directions and 0 volts in the rest position? 
    1. YES  : INSTALL a new power seat track. REFER to Seat Track - Power . TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : Go to  F7.
  7. F7 CHECK CIRCUIT 979 (RD/LB) FOR AN OPEN 
    • Disconnect: Driver Seat Control Switch C360
      • Fig 5: Checking Circuit 979 (RD/LB) For Open
      GF0014759Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver seat control switch C360-1, circuit 979 (RD/LB), harness side and driver power seat motor assembly C353-1, circuit 979 (RD/LB), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  F8.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  8. F8 CHECK CIRCUIT 990 (YE/LB) FOR AN OPEN 
      Fig 6: Checking Circuit 990 (YE/LB) For Open
      GF0014760Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver seat control switch C360-8, circuit 990 (YE/LB), harness side and driver power seat motor assembly C353-7, circuit 990 (YE/LB), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new driver seat control switch. REFER to Seat Control Switch . TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : REPAIR the circuit. TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  9. F9 CHECK VOLTAGE TO THE HORIZONTAL MOTOR 
    • Key in OFF position.
    • 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 C367
    • Connect restraint system diagnostic tool 418-133 to driver seat side air bag C367.
    • Disconnect: Driver Power Seat Motor Assembly C353
      • WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
    • Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
      • Fig 7: Checking Voltage To Horizontal Motor
      GF0014761Courtesy of FORD MOTOR CO.
    • Measure the voltage between driver power seat motor assembly C353-3, circuit 981 (RD/WH) and C353-5, circuit 980 (YE/WH), harness side while operating the seat control switch forward and rearward.
    • Is the voltage greater than 10 volts when the seat control switch is toggled in both directions and 0 volts in the rest position? 
    1. YES  : INSTALL a new power seat track. REFER to Seat Track - Power . TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : Go to  F10.
  10. F10 CHECK CIRCUIT 981 (RD/WH) FOR AN OPEN 
    • Disconnect: Driver Seat Control Switch C360
      • Fig 8: Checking Circuit 981 (RD/WH) For Open
      GF0014762Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver seat control switch C360-6, circuit 981 (RD/WH), harness side, and driver power seat motor assembly C353-3, circuit 981 (RD/WH), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  F11.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

  11. F11 CHECK CIRCUIT 980 (YE/WH) FOR AN OPEN 
      Fig 9: Checking Circuit 980 (YE/WH) For Open
      GF0014763Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver seat control switch C360-3, circuit 980 (YE/WH), harness side and driver power seat motor assembly C353-5, circuit 980 (YE/WH), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new driver seat control switch. REFER to Seat Control Switch . TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

    2. NO  : REPAIR the circuit. TEST the system for normal operation.

      DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM .

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