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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test V: DTC B1884 - PAD Warning Lamp Circuit Fault >> Pinpoint Test V: DTC B1884 - Pad Warning Lamp Circuit Fault

Pinpoint Test V: DTC B1884 - Pad Warning Lamp Circuit 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. V1 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 B1884 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.

    If the PAD indicator does  illuminate, GO to  V2.

    If the PAD indicator does not  illuminate, GO to  V4.

    No  : This is an intermittent fault. The fault condition is not present at this time. GO to  V8.

  2. V2 CHECK CIRCUIT 31S-JA56 (BK/RD) FOR SHORT TO GROUND 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: PAD Indicator C2039.
    • Measure the resistance between PAD indicator C2039-6, circuit 31S-JA56 (BK/RD), harness side and ground.
      Fig 1: Checking Circuit 31S-JA56 (BK/RD) For Short To Ground
      G04654896Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to  V7.

    No  : GO to  V3.

  3. V3 CHECK THE RCM 
    • Measure the resistance between RCM C2041b pin 17, component side and ground.
      Fig 2: Checking RCM
      G04654897Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : REPAIR circuit 31S-JA56 (BK/RD). GO to  V9.

    No  : GO to  V7.

  4. V4 CHECK CIRCUIT 31S-JA56 (BK/RD) FOR AN OPEN 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Disconnect: PAD Indicator C2039.
    • Measure the resistance between PAD indicator C2039-6, circuit 31S-JA56 (BK/RD), harness side and RCM C2041b-17, circuit 31S-JA56 (BK/RD), harness side.
      Fig 3: Checking Circuit 31S-JA56 (BK/RD) For Open
      G04654898Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to  V5.

    No  : REPAIR circuit 31S-JA56 (BK/RD). GO to  V9.

  5. V5 CHECK CIRCUIT 15-JA56 (GN/OG) FOR AN OPEN 
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Key in ON position.
    • Measure the voltage between PAD indicator C2039-3, circuit 15-JA56 (GN/OG), harness side and ground.
      Fig 4: Checking Circuit 15-JA56 (GN/OG) For Open
      G04654899Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  V6.

    No  : VERIFY that the central junction box (CJB) fuse 51 (7.5A) is OK. If OK, REPAIR circuit 15-JA56 (GN/OG). GO to  V9.

  6. V6 CHECK THE PAD INDICATOR LAMP 
    • Key in OFF position.
    • Deactivate the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION  in this article.
    • Connect: PAD Indicator C2039.
    • Key in ON position.
    • Connect a fused jumper wire between RCM C2041b-17, circuit 31S-JA56 (BK/RD), harness side and ground.
      Fig 5: Checking PAD Indicator Lamp
      G04654900Courtesy of FORD MOTOR CO.
    • Does the PAD indicator illuminate? 

    Yes  : GO to  V7.

    No  : INSTALL a new PAD indicator. REFER to PASSENGER AIR BAG DEACTIVATION (PAD) INDICATOR  in this article. GO to  V9.

  7. V7 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)  in this article. GO to  V9.

    No  : CHECK for causes of intermittent open or short to ground on circuit 31S-JA56 (BK/RD). ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. ACTIVATE other systems in the same wire harness. REPAIR any intermittent concerns found. GO to  V9.

  8. V8 CHECK FOR AN INTERMITTENT FAULT 
    • Key in OFF position.
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Was DTC B1884 retrieved during the on-demand self test? 

    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.

    GO to  V2.

    No  : CHECK for causes of intermittent open or short to ground on circuit 31S-JA56 (BK/RD). ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. ACTIVATE other systems in the same wire harness. REPAIR any intermittent concerns found. GO to  V9.

  9. V9 CHECK FOR ADDITIONAL DTCs 
    • Refer to the continuous DTCs recorded during Step V1.
    • Were any continuous DTCs retrieved during Step V1? 

    Yes  : Do not clear any DTCs until all DTCs have been resolved. GO to the DIAGNOSTIC TROUBLE CODES (DTCS)  in this article for pinpoint test direction.

    No  : RECONNECT the system. If previously directed to deactivate the system, REACTIVATE the system. REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEACTIVATION AND REACTIVATION  in this article. REPOWER the system. REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article. PROVE OUT the system. CLEAR all DTCs.

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