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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 734 (Supplemental Inflatable Restraint System - F-150 & Mark LT) >> Diagnostic Tests >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test K: LFC 19 and 21/DTC B2293 - Restraint System - Air Bag Fault >> Pinpoint Test K: LFC 19 And 21/DTC B2293 - Restraint System - Air Bag Fault

Pinpoint Test K: LFC 19 And 21/DTC B2293 - Restraint System - Air Bag Fault

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
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. K1 CHECK FOR A HARD OR INTERMITTENT DTC 
    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 diagnostic tool: On-Demand Self Test/Retrieve and Record Continuous Memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: View and Record DTC B2293 Fault PIDs
    • Was on-demand DTC B2293 retrieved? 
    1. 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  K2 .
    2. NO  : This is an intermittent fault when present as a continuous memory DTC only (DTC not retrieved on-demand). The fault condition is not present at this time. Go to  K38 .
  2. K2 CHECK THE DRIVER AND PASSENGER AIR BAG MODULES 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • If a fault PID was reported for the driver air bag module:
      • Connect restraint system diagnostic tools 418-F395 (2 required) to the driver air bag module squib 1 and squib 2 connectors.
    • If a fault PID was reported for the passenger air bag module:
      • Disconnect the passenger air bag module C256a and C256b.
      • Connect restraint system diagnostic tool 418-F395 (2 required) to passenger air bag module C256a and C256b.
    • Repower the system. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test/Retrieve and Record Continuous Memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: View and Record DTC B2293 Fault PIDs
    • Was on-demand DTC B2293 retrieved? 
    1. 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.

      Using the fault PIDs recorded in the step K1, go to the appropriate pinpoint test step.

      For driver air bag module squib 1 with a short to ground fault, go to  K3 .

      For driver air bag module squib 1 with a short to battery fault, go to  K5 .

      For driver air bag module squib 1 with an open circuit fault, go to  K7 .

      For driver air bag module squib 1 with a low resistance fault, go to  K11 .

      For passenger air bag module squib 1 with a short to ground fault, go to  K14 .

      For passenger air bag module squib 1 with a short to battery fault, go to  K15 .

      For passenger air bag module squib 1 with an open circuit fault, go to  K16 .

      For passenger air bag module squib 1 with a low resistance fault, go to  K18 .

      For driver air bag module squib 2 with a short to ground fault, go to  K20 .

      For driver air bag module squib 2 with a short to battery fault, go to  K22 .

      For driver air bag module squib 2 with an open circuit fault, go to  K24 .

      For driver air bag module squib 2 with a low resistance fault, go to  K28 .

      For passenger air bag module squib 2 with a short to ground fault, go to  K31 .

      For passenger air bag module squib 2 with a short to battery fault, go to  K32 .

      For passenger air bag module squib 2 with an open circuit fault, go to  K33 .

      For passenger air bag module squib 2 with a low resistance fault, go to  K35 .

    2. NO  : If a fault PID was reported for the driver air bag module in Step K1, INSTALL a new driver air bag module. REFER to Driver Air Bag Module  in this article. Go to  K39 .

      If a fault PID was reported for the passenger air bag module in Step K1, INSTALL a new passenger air bag module. REFER to Passenger Air Bag Module  in this article. Go to  K39 .

  3. K3 CHECK CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: RCM C310a and C310b
    • Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Measure the resistance between RCM C310a-1, circuit 614 (GY/OG), harness side and ground; and between RCM C310a-2, circuit 615 (GY/WH), harness side and ground.
      • Fig 1: Checking Circuit 614 (GY/OG) & 615 (GY/WH) For Short To Ground Between RCM & Driver Air Bag Module
      G03891313Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K4.
  4. K4 CHECK CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE CLOCKSPRING 
    • Disconnect: Clockspring C218a
    • Measure the resistance between RCM C310a-1, circuit 614 (GY/OG), harness side and ground; and between RCM C310a-2, circuit 615 (GY/WH), harness side and ground.
      • Fig 2: Checking Circuit 614 And Circuit 615 For Short To Ground Between RCM And Clockspring
      G03891313Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. 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.
    3. REPAIR circuit 614 (GY/OG) or circuit 615 (GY/WH). Go to  K39 .
  5. K5 CHECK CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • 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 driver air bag module squib 1 electrical connector, circuit 614 (GY/OG), harness side and ground; and between driver air bag module squib 1 electrical connector, circuit 615 (GY/WH), harness side and ground.
      • Fig 3: Checking Circuit 614 (GY/OG) And 615 (GY/WH) For Short To Voltage Between RCM And Driver Air Bag Module
      G04675870Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K6.
  6. K6 CHECK CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE CLOCKSPRING 
    • Key in OFF position.
    • Disconnect: Clockspring C218a
    • Key in ON position.
    • Measure the voltage between clockspring C218a-3, circuit 615 (GY/WH), harness side and ground; and between clockspring C218a-4, circuit 614 (GY/OG), harness side and ground.
      • Fig 4: Checking Circuit 614 (GY/OG) And 615 (GY/WH) For Short To Voltage Between RCM And Clockspring
      G03903673Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. 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 614 (GY/OG) or 615 (GY/WH). Go to  K39 .

  7. K7 CHECK CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a-1, circuit 614 (GY/OG), harness side and driver air bag module squib 1 electrical connector, circuit 614 (GY/OG), harness side.
      • Fig 5: Checking Circuit 614 (GY/OG) And Circuit 615 (GY/WH) For An Open Between RCM And Driver Air Bag Module
      GF0002173Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K9.
    2. NO  : Go to  K8.
  8. K8 CHECK CIRCUIT 614 (GY/OG) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING 
    • Disconnect: Clockspring C218a
    • Measure the resistance between RCM C310a-1, circuit 614 (GY/OG), harness side and clockspring C218a-4, circuit 614 (GY/OG), harness side.
      • Fig 6: Checking Circuit 614 (GY/OG) For An Open Between RCM And Clockspring
      GF0002174Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. NO  : REPAIR circuit 614 (GY/OG). Go to  K39 .
  9. K9 CHECK CIRCUIT 615 (GY/WH) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Measure the resistance between RCM C310a-2, circuit 615 (GY/WH), harness side and driver air bag module squib 1 electrical connector, circuit 615 (GY/WH), harness side.
      • Fig 7: Checking Circuit 615 (GY/WH) For Open Between RCM And Driver Air Bag Module
      GF0002175Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K10.
  10. K10 CHECK CIRCUIT 615 (GY/WH) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING 
    • Disconnect: Clockspring C218a
    • Measure the resistance between RCM C310a-2, circuit 615 (GY/WH), harness side and clockspring C218a-3, circuit 615 (GY/WH), harness side.
      • Fig 8: Checking Circuit 615 (GY/WH) For Open Between RCM And Clockspring
      GF0002176Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. NO  : REPAIR circuit 615 (GY/WH). Go to  K39 .
  11. K11 CHECK CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) FOR LOW RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE AND THE RCM  
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Driver Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Measure the resistance between driver air bag module squib 1 electrical connector, circuit 614 (GY/OG) and circuit 615 (GY/WH), harness side.
      • Fig 9: Checking Circuit 614 (GY/OG) And 615 (GY/WH) For Low Resistance Between Driver Air Bag Module And RCM
      G04675876Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K12.
  12. K12 MEASURE THE RESISTANCE BETWEEN RCM CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) 
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a pin 1, component side and pin 2, component side.
      • Fig 10: Measuring Resistance Between RCM Circuit 614 (GY/OG) And Circuit 615 (GY/WH)
      G04675877Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K13.
    2. NO  : Go to  K37.
  13. K13 CHECK CIRCUIT 614 (GY/OG) AND CIRCUIT 615 (GY/WH) FOR LOW RESISTANCE BETWEEN THE CLOCKSPRING AND THE RCM  
    • Connect: RCM C310a and C310b
    • Disconnect: Clockspring C218a
    • Measure the resistance between clockspring C218a-4, circuit 614 (GY/OG) and C218a-3, circuit 615 (GY/WH), harness side.
      • Fig 11: Checking Circuit 614 (GY/OG) And 615 (GY/WH) For Low Resistance Between Clockspring And RCM
      G03903679Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. NO  : REPAIR circuit 614 (GY/OG) and circuit 615 (GY/WH). Go to  K39 .
  14. K14 CHECK CIRCUIT 607 (LB/OG) AND CIRCUIT 616 (PK/BK) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a-3, circuit 607 (LB/OG), harness side and ground; and between RCM C310a-4, circuit 616 (PK/BK), harness side and ground.
      • Fig 12: Checking Circuit 607 (LB/OG) And 616 (PK/BK) For Short To Ground Between RCM And Passenger Air Bag Module
      G04675879Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 
    1. YES  : Go to  K37.
    2. 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 607 (LB/OG) or circuit 616 (PK/BK). Go to  K39 .

  15. K15 CHECK CIRCUIT 607 (LB/OG) AND CIRCUIT 616 (PK/BK) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • 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 passenger air bag module C256a-2, circuit 607 (LB/OG), harness side and ground; and between passenger air bag module C256a-1, circuit 616 (PK/BK), harness side and ground.
      • Fig 13: Checking Circuit 607 (LB/OG) And 616 (PK/BK) For Short To Voltage Between RCM And Passenger Air Bag Module
      G04675880Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 
    1. YES  : Go to  K37.
    2. 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 607 (LB/OG) or circuit 616 (PK/BK). Go to  K39 .

  16. K16 CHECK CIRCUIT 607 (LB/OG) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a-3, circuit 607 (LB/OG), harness side and passenger air bag module C256a-2, circuit 607 (LB/OG), harness side.
      • Fig 14: Checking Circuit 607 (LB/OG) For An Open Between RCM And Passenger Air Bag Module
      GF0002177Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K17.
    2. NO  : REPAIR circuit 607 (LB/OG). Go to  K39 .
  17. K17 CHECK CIRCUIT 616 (PK/BK) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Measure the resistance between RCM C310a-4, circuit 616 (PK/BK), harness side and passenger air bag module C256a-1, circuit 616 (PK/BK), harness side.
      • Fig 15: Checking Circuit 616 (PK/BK) For An Open Between RCM And Passenger Air Bag Module
      GF0002178Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K37.
    2. NO  : REPAIR circuit 616 (PK/BK). Go to  K39 .
  18. K18 CHECK CIRCUIT 607 (LB/OG) AND CIRCUIT 616 (PK/BK) FOR LOW RESISTANCE BETWEEN THE PASSENGER AIR BAG MODULE AND THE RCM  
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 1 Restraint System Diagnostic Tool
    • Measure the resistance between passenger air bag module C256a-2, circuit 607 (LB/OG), harness side and C256a-1, circuit 616 (PK/BK), harness side.
      • Fig 16: Checking Circuit 607 (LB/OG) And 616 (PK/BK) For Low Resistance Between Passenger Air Bag Module And RCM
      G04675883Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K19.
  19. K19 MEASURE THE RESISTANCE BETWEEN RCM CIRCUIT 607 (LB/OG) AND CIRCUIT 616 (PK/BK) 
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a pin 3, component side and pin 4, component side.
      • Fig 17: Measuring Resistance Between Circuits 607 (LB/OG) And Circuit 616 (PK/BK)
      G03989625Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit 607 (LB/OG) and circuit 616 (PK/BK). Go to  K22 .
    2. NO  : Go to  K37.
  20. K20 CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517 (RD/OG) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: RCM C310a and C310b
    • Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Measure the resistance between RCM C310a-5, circuit 1516 (YE/WH), harness side and ground; and between RCM C310a-6, circuit 1517 (RD/OG), harness side and ground.
      • Fig 18: Checking Circuit 1516 (YE/WH) And 1517 (RD/OG) For Short To Ground Between RCM & Driver Air Bag Module
      G03966631Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K21.
  21. K21 CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517 (RD/OG) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE CLOCKSPRING 
    • Disconnect: Clockspring C218a
    • Measure the resistance between RCM C310a-5, circuit 1516 (YE/WH), harness side and ground; and between RCM C310a-6, circuit 1517 (RD/OG), harness side and ground.
      • Fig 19: Checking Circuit 1516 And Circuit 1517 For Short To Ground Between RCM And Clockspring
      G03966631Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. 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 1516 (YE/WH) or circuit 1517 (RD/OG). Go to  K39 .

  22. K22 CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517 (RD/OG) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • 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 driver air bag module squib 2 electrical connector, circuit 1516 (YE/WH), harness side and ground; and between driver air bag module squib 2 electrical connector, circuit 1517 (RD/OG), harness side and ground.
      • Fig 20: Checking Circuit 1516 (YE/WH) & Circuit 1517 (RD/OG) For Short To Voltage Between RCM & Driver Air Bag Module
      G03881011Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K23.
  23. K23 CHECK CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517 (RD/OG) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE CLOCKSPRING 
    • Key in OFF position.
    • Disconnect: Clockspring C218a
    • Key in ON position.
    • Measure the voltage between clockspring C218a-2, circuit 1516 (YE/WH), harness side and ground; and between clockspring C218a-1, circuit 1517 (RD/OG), harness side and ground.
      • Fig 21: Checking Circuit 1516 (YE/WH) And 1517 (RD/OG) For Short To Voltage Between RCM And Clockspring
      G04675888Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. 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 1516 (YE/WH) or circuit 1517 (RD/OG). Go to  K39 .

  24. K24 CHECK CIRCUIT 1516 (YE/WH) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a-5, circuit 1516 (YE/WH), harness side and the driver air bag module squib 2 electrical connector, circuit 1516 (YE/WH), harness side.
      • Fig 22: Checking Circuit 1516 (YE/WH) For An Open Between RCM And Driver Air Bag Module
      GF0002179Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K26.
    2. NO  : Go to  K25.
  25. K25 CHECK CIRCUIT 1516 (YE/WH) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING 
    • Disconnect: Clockspring C218a
    • Measure the resistance between RCM C310a-5, circuit 1516 (YE/WH), harness side and the clockspring C218a-2, circuit 1516 (YE/WH), harness side.
      • Fig 23: Checking Circuit 1516 (YE/WH) For An Open Between RCM And Clockspring
      GF0002180Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. NO  : REPAIR circuit 1516 (YE/WH). Go to  K39 .
  26. K26 CHECK CIRCUIT 1517 (RD/OG) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Measure the resistance between RCM C310a-6, circuit 1517 (RD/OG), harness side and the driver air bag module squib 2 electrical connector, circuit 1517 (RD/OG), harness side.
      • Fig 24: Checking Circuit 1517 (RD/OG) For An Open Between RCM And Driver Air Bag Module
      GF0002181Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K27.
  27. K27 CHECK CIRCUIT 1517 (RD/OG) FOR AN OPEN BETWEEN THE RCM AND THE CLOCKSPRING 
    • Disconnect: Clockspring C218a
    • Measure the resistance between RCM C310a-6, circuit 1517 (RD/OG), harness side and clockspring C218a-1, circuit 1517 (RD/OG), harness side.
      • Fig 25: Checking Circuit 1517 (RD/OG) For An Open Between RCM And Clockspring
      GF0002182Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. NO  : REPAIR circuit 1517 (RD/OG). Go to  K39 .
  28. K28 CHECK FOR LOW RESISTANCE ON CIRCUITS 1516 (YE/WH) AND 1517 (RD/OG) BETWEEN THE RCM AND THE DRIVER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Driver Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Measure the resistance between the driver air bag module squib 2 electrical connector, circuit 1516 (YE/WH), harness side and circuit 1517 (RD/OG), harness side.
      • Fig 26: Checking Low Resistance On Circuits 1516 (YE/WH) And 1517 (RD/OG) Between RCM And Driver Air Bag Module
      G04675893Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K29.
  29. K29 MEASURE THE RESISTANCE BETWEEN THE RCM CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517 (RD/OG) 
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a pin 5, component side and pin 6, component side.
      • Fig 27: Checking Resistance Between RCM Circuits 1516 (YE/WH) And 1517 (RD/OG)
      G03989635Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K30.
    2. NO  : Go to  K37.
  30. K30 CHECK FOR LOW RESISTANCE ON CIRCUIT 1516 (YE/WH) AND CIRCUIT 1517 (RD/OG) BETWEEN THE DRIVER AIR BAG MODULE AND THE CLOCKSPRING  
    • Connect: RCM C310a and C310b
    • Disconnect: Clockspring C218a
      • Fig 28: Checking Low Resistance On Circuit 1516 (YE/WH) And 1517 (RD/OG) Between Driver Air Bag Module And Clockspring
      G03903697Courtesy of FORD MOTOR CO.
    • Measure the resistance between clockspring C218a-1, circuit 1517 (RD/OG), harness side and C218a-2, circuit 1516 (YE/WH), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring  in this article. Go to  K39 .
    2. NO  : REPAIR circuit 1516 (YE/WH) and circuit 1517 (RD/OG). Go to  K39 .
  31. K31 CHECK CIRCUIT 1518 (BK/WH) AND CIRCUIT 1519 (LG/RD) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a-13, circuit 1518 (BK/WH), harness side and ground; and between RCM C310a-14, circuit 1519 (LG/RD), harness side and ground.
      • Fig 29: Checking Circuit 1518 (BK/WH) And 1519 (LG/RD) For Short To Ground Between RCM And Passenger Air Bag Module
      GF0002183Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 
    1. YES  : Go to  K37.
    2. 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 1518 (BK/WH) or circuit 1519 (LG/RD). Go to  K39 .

  32. K32 CHECK CIRCUIT 1518 (BK/WH) AND CIRCUIT 1519 (LG/RD) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • 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 passenger air bag module C256b-2, circuit 1518 (BK/WH), harness side and ground; and between passenger air bag module C256b-1, circuit 1519 (LG/RD), harness side and ground.
      • Fig 30: Checking Circuit 1518 (BK/WH) And 1519 (LG/RD) For Short To Voltage Between RCM And Passenger Air Bag Module
      G03881011Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 
    1. YES  : Go to  K37.
    2. 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 1518 (BK/WH) or circuit 1519 (LG/RD). Go to  K39 .

  33. K33 CHECK CIRCUIT 1518 (BK/WH) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a-13, circuit 1518 (BK/WH), harness side and passenger air bag module C256b-2 circuit 1518 (BK/WH), harness side.
      • Fig 31: Checking Circuit 1518 (BK/WH) For An Open Between RCM And Passenger Air Bag Module
      GF0002184Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K34.
    2. NO  : REPAIR circuit 1518 (BK/WH). Go to  K39 .
  34. K34 CHECK CIRCUIT 1519 (LG/RD) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Measure the resistance between RCM C310a-14, circuit 1519 (LG/RD), harness side and passenger air bag module C256b-1 circuit 1519 (LG/RD), harness side.
      • Fig 32: Checking Circuit 1519 (LG/RD) For An Open Between RCM And Passenger Air Bag Module
      GF0002185Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K37.
    2. NO  : REPAIR circuit 1519 (LG/RD). Go to  K39 .
  35. K35 CHECK FOR LOW RESISTANCE ON CIRCUIT 1518 (BK/WH) AND CIRCUIT 1519 (LG/RD) BETWEEN THE RCM AND THE PASSENGER AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Disconnect: Passenger Air Bag Module Squib 2 Restraint System Diagnostic Tool
    • Measure the resistance between passenger air bag module C256b-1 circuit 1519 (LG/RD), harness side and C256b-2, circuit 1518 (BK/WH), harness side.
      • Fig 33: Checking Low Resistance On Circuits 1518 (BK/WH) And 1519 (LG/RD) Between RCM And Driver Air Bag Module
      G04675893Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K36.
  36. K36 MEASURE THE RESISTANCE BETWEEN THE RCM CIRCUIT 1518 (BK/WH) AND CIRCUIT 1519 (LG/RD) 
    • Disconnect: RCM C310a and C310b
    • Measure the resistance between RCM C310a pin 13, component side and pin 14, component side.
      • Fig 34: Checking Resistance Between RCM Circuits 1518 (RD/WH) And 1519 (LG/RD)
      G03987332Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit 1518 (BK/WH) and circuit 1519 (LG/RD). Go to  K39 .
    2. NO  : Go to  K37.
  37. K37 CONFIRM THE RCM FAULT 
    NOTE: Make sure all restraint system diagnostic tools, sensor electrical connectors and the RCM electrical connector are connected before carrying out the on-demand self-test. If not, erroneous DTCs will be recorded
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Connect: Restraint System Diagnostic Tool
    • Connect: RCM C310a and C310b
    • Repower the system. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test/Retrieve and Record Continuous Memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: View and Record DTC B2293 Fault PIDs
    • Was on-demand DTC B2293 retrieved? 
    1. YES  : INSTALL a new RCM. REFER to Restraints Control Module (RCM)  in this article. Go to  K39 .
    2. 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. ACTIVATE other systems in the same wire harness. REPAIR any intermittent concerns found. Go to  K39 .
  38. K38 CHECK FOR AN INTERMITTENT FAULT 
    • Key in OFF position.
    • Depower the system. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • If a fault PID was reported for the driver air bag module:
      • Connect restraint system diagnostic tools 418-F395 (2 required) to the driver air bag module squib 1 and squib 2 connectors.
    • If a fault PID was reported for the passenger air bag module:
      • Disconnect the passenger air bag module C256a and C256b.
      • Connect restraint system diagnostic tools 418-F395 (2 required) to passenger air bag module C256a and C256b.
    • Repower the system. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering  in this article.
    • Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test/Retrieve and Record Continuous Memory DTCs
    • Enter the following diagnostic mode on the diagnostic tool: View and Record DTC B2293 Fault PIDs
    • Was on-demand DTC B2293 retrieved? 
    1. 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 affected air bag module connector. REPAIR any intermittent concerns found.

      If an intermittent concern was  found and repaired, go to  K39 .

      If an intermittent concern was not  found and repaired, USE the fault PIDs recorded and Go to the appropriate pinpoint test step.

      For driver air bag module squib 1 with a short to ground fault, go to  K3 .

      For driver air bag module squib 1 with a short to battery fault, go to  K5 .

      For driver air bag module squib 1 with an open circuit fault, go to  K7 .

      For driver air bag module squib 1 with a low resistance fault, go to  K11 .

      For passenger air bag module squib 1 with a short to ground fault, go to  K14 .

      For passenger air bag module squib 1 with a short to battery fault, go to  K15 .

      For passenger air bag module squib 1 with an open circuit fault, go to  K16 .

      For passenger air bag module squib 1 with a low resistance fault, go to  K18 .

      For driver air bag module squib 2 with a short to ground fault, go to  K20 .

      For driver air bag module squib 2 with a short to battery fault, go to  K22 .

      For driver air bag module squib 2 with an open circuit fault, go to  K24 .

      For driver air bag module squib 2 with a low resistance fault, go to  K28 .

      For passenger air bag module squib 2 with a short to ground fault, go to  K31 .

      For passenger air bag module squib 2 with a short to battery fault, go to  K32 .

      For passenger air bag module squib 2 with an open circuit fault, go to  K33 .

      For passenger air bag module squib 2 with a low resistance fault, go to  K35 .

    2. 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. ACTIVATE other systems in the same wire harness. REPAIR any intermittent concerns found. Go to  K39 .
  39. K39 CHECK FOR ADDITIONAL DTCs 
    • Refer to the continuous memory DTCs recorded during Step K1.
    • Were any continuous memory DTCs retrieved during Step K1? 
    1. YES  : Do not clear any DTCs until all DTCs have been resolved. Go to the Restraints Control Module (RCM) Diagnostic Trouble Code (DTC) Table in this article for pinpoint test direction.
    2. 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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