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Pinpoint Test C: The Power Seat Is Inoperative - Driver: Overview

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 CHECK CIRCUIT 30-AH35 (RD/YE) FOR VOLTAGE 
    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 seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to AIR BAG RESTRAINT SYSTEMS .
    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.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of AIR BAG RESTRAINT SYSTEMS .
    • Disconnect: Driver Seat Side Air Bag Module C316.
    • Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316.
    • Connect: Battery Ground Cable.
      • 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.
    • Disconnect: Driver Seat Control Switch C360.
    • Measure the voltage between driver seat control switch C360-6, circuit 30-AH35 (RD/YE), harness side and ground.
      Fig 1: Measuring Voltage Between Driver Seat Control Switch C360-6, Circuit 30-AH35 (RD/YE), Harness Side And Ground
      G03203689Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to C2.
    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 C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to AIR BAG RESTRAINT SYSTEMS .
  2. C2 CHECK CIRCUIT 31-AH35 (BK/YE) FOR AN OPEN 
    • Measure the resistance between driver seat control switch C360-1, circuit 31-AH35 (BK/YE), harness side and ground.
      Fig 2: Measuring Resistance Between Driver Seat Control Switch C360-1, Circuit 31-AH35 (BK/YE), Harness Side And Ground
      G03203690Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : INSTALL a new driver 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 C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to AIR BAG RESTRAINT SYSTEMS .
    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 C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to AIR BAG RESTRAINT SYSTEMS .
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