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Home >> Ford >> 2009 >> Explorer 4.6 8, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Seat System - Seating) >> Diagnostic Tests >> Seats >> Pinpoint Tests >> Pinpoint Test E: The Power Seat Does Not Recline - Passenger >> Pinpoint Test E: The Power Seat Does Not Recline - Passenger

Pinpoint Test E: The Power Seat Does Not Recline - Passenger

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.
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.
CAUTION: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
CAUTION: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
NOTE: The air bag warning indicator illuminates when the correct restraints control module (RCM) fuse is removed and the ignition switch is ON.
NOTE: The supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
  1. E1 CHECK VOLTAGE TO THE PASSENGER SEAT RECLINER 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 article.
    • For vehicles equipped with seat side air bags, carry out the following:
      • Disconnect the passenger seat side air bag C316.
      • Connect the Restraint System Diagnostic Tool to the passenger seat side air bag C316.
    • Disconnect: Passenger Seat Recliner Motor C338
      • 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 & CABLES article.
      • Fig 1: Measuring Voltage
      GF0021305Courtesy of FORD MOTOR CO.
    • Measure the voltage between passenger seat recliner motor C338-1, circuit 918 (GY), harness side and C338-2, circuit 919 (GY/BK), while pushing the recline switch forward and rearward.
    • Is the voltage greater than 10 volts when the seat control switch is toggled in both directions and 0 volt in the rest position? 
    1. YES  : INSTALL a new passenger seat recliner motor. REFER to Seat Recliner - Power . 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 passenger seat side air bag module C316. CONNECT passenger seat side air bag module C316. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
    2. NO  : Go to  E2.
  2. E2 CHECK CIRCUIT 918 (GY) FOR AN OPEN 
    • Disconnect: Passenger Seat Control Switch C627
      • Fig 2: Measuring Resistance
      GF0046608Courtesy of FORD MOTOR CO.
    • Measure the resistance between seat backrest power recline motor C338-1, circuit 918 (GY), harness side and passenger seat control switch C627-2, circuit 918 (GY), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  E3.
    2. NO  : REPAIR the 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 passenger seat side air bag module C316. CONNECT passenger seat side air bag module C316. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
  3. E3 CHECK CIRCUIT 918 (GY) FOR A SHORT TO GROUND 
      Fig 3: Measuring Resistance
      GF0013073Courtesy of FORD MOTOR CO.
    • Measure the resistance between seat backrest power recline motor C338-1, circuit 918 (GY), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  E4.
    2. NO  : REPAIR the 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 passenger seat side air bag module C316. CONNECT passenger seat side air bag module C316. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
  4. E4 CHECK CIRCUIT 919 (GY/BK) FOR AN OPEN 
      Fig 4: Measuring Resistance
      GF0046609Courtesy of FORD MOTOR CO.
    • Measure the resistance between seat backrest power recline motor C338-2, circuit 919 (GY/BK), harness side and passenger seat control switch C627-3, circuit 919 (GY/BK), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  E5.
    2. NO  : REPAIR the 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 passenger seat side air bag module C316. CONNECT passenger seat side air bag module C316. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
  5. E5 CHECK CIRCUIT 919 (GY/BK) FOR A SHORT TO GROUND 
    • Disconnect: Passenger Seat Control Switch C627
      • Fig 5: Measuring Resistance
      GF0013076Courtesy of FORD MOTOR CO.
    • Measure the resistance between seat backrest power recline motor C338-2, circuit 919 (GY/BK), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : INSTALL a new seat control switch. REFER to Seat Control Switch . 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 passenger seat side air bag module C316. CONNECT passenger seat side air bag module C316. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
    2. NO  : REPAIR the 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 passenger seat side air bag module C316. CONNECT passenger seat side air bag module C316. REPOWER the SRS. REFER to SUPPLEMENTAL RESTRAINT SYSTEM article.
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