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Home >> Ford >> 2005 >> Focus ZX5 S, Automatic >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test AE: DTC B1992 - Driver Side, Side Mount Air Bag Circuit Short to VBatt Fault >> Pinpoint Test AE: DTC B1992 - Driver Side, Side Mount Air Bag Circuit Short To VBATT Fault

Pinpoint Test AE: DTC B1992 - Driver Side, Side Mount Air Bag Circuit Short To VBATT Fault

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough Inspection and Verification before proceeding with the Pinpoint Test.
  1. AE1 CHECK FOR CONTINUOUS AND ON-DEMAND DTCs 
    WARNING: Restraint system diagnostic tools are for service only. Tools must be removed prior to operating the vehicle over the road. Failure to remove restraint system diagnostic tools could result in injury and possible violation of vehicle safety standards.
    WARNING: Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.
    WARNING: The safety belt pretensioner is a pyrotechnic device. Always wear safety glasses when repairing an air bag equipped vehicle and when handling a safety belt buckle pretensioner or safety belt retractor pretensioner. Never probe a pretensioner electrical connector. Doing so could result in pretensioner or air bag deployment and could result in personal injury.
    NOTE: After diagnosing or repairing an SRS, the restraint system diagnostic tools must be removed before operating the vehicle over the road.
    NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Retrieve/Record Continuous DTCs.
    • Was DTC B1992 retrieved during the on-demand self test? 
    • Yes  : This is a hard fault. The fault condition is still present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. GO to  AE2.
    • No  : This is an intermittent fault. The fault condition is not present at this time. GO to  AE5.
  2. AE2 CHECK CIRCUIT 15S-JA37 (GN/BK) AND CIRCUIT 91S-JA37 (BK/GN) FOR A SHORT TO BATTERY BETWEEN THE RCM AND THE DRIVER SIDE AIR BAG 
    • Yes  : GO to  AE3.
    • No  : REMOVE and INSPECT the seat side air bag module harness for damage. REPAIR the harness or INSTALL a new driver side air bag module as needed. Refer to SIDE AIR BAG MODULE . GO to  AE6.
  3. AE3 CHECK CIRCUIT 15S-JA37 (GN/BK) AND CIRCUIT 91S-JA37 (BK/GN) FOR A SHORT TO BATTERY BETWEEN THE RCM AND THE DRIVER SEAT 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Seat C311.
    • Disconnect: RCM C2041a and C2041b.
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Key in ON position.
    • Measure the voltage between driver seat C311e pin 9, circuit 15S-JA37 (GN/BK), harness side and ground; and between driver seat C311e pin 10, circuit 91S-JA37 (BK/GN), harness side and ground.
      Fig 1: Checking Circuit 15S-JA37 (GN/BK) And Circuit 91S-JA37 (BK/GN) For A Short To Battery Between RCM And Driver Seat
      G03953470Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 
    • Yes  : GO to  AE4.
    • No  : Due to the shorting bar feature in the electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.

    REPAIR circuit 15S-JA37 (GN/BK) or circuit 91S-JA37 (BK/GN). GO to  AE6.

  4. AE4 CONFIRM THE RCM FAULT 
    NOTE: Make sure all restraint system diagnostic tools, sensor electrical connectors and the RCM electrical connectors are connected before carrying out the on-demand self test. If not, erroneous DTCs will be recorded
    • Yes  : INSTALL and CONFIGURE a new RCM. Refer to RESTRAINTS CONTROL MODULE (RCM) . GO to  AE6.
    • No  : CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. REPAIR any intermittent concerns found. GO to  AE6.
  5. AE5 CHECK FOR AN INTERMITTENT FAULT 
    • Yes  : This is a hard fault. The fault condition is now present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test.

      CHECK for causes of the intermittent fault at or near the driver side air bag module connector. REPAIR any intermittent concerns found.

      If an intermittent concern was  found and repaired, GO to  AE6.

      If an intermittent concern was not  found and repaired, GO to  AE3.

    • No  : CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. REPAIR any intermittent concerns found. GO to  AE6.
  6. AE6 CHECK FOR ADDITIONAL DTCs 
    • Refer to the continuous DTCs recorded during Step  AE1.
    • Were any continuous DTCs retrieved during Step AE1? 
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