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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Supplemental Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test K: LFC 19 and 21/DTC B2293 - Restraint System - Airbag Fault >> Pinpoint Test K: LFC 19 And 21/DTC B2293 - Restraint System - Airbag Fault

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

WARNING: This page is about a different car, the 2009 Ford Mustang. 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.
WARNING: Never probe the electrical connectors on air bag, safety canopy or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: The supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
NOTE: SRS components should only be disconnected or reconnected when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS. 
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 CONTINUOUS AND ON-DEMAND DTCs 
    • Enter the following diagnostic mode on the diagnostic tool: Self Test - RCM
    • Enter the following diagnostic mode on the diagnostic tool: DataLogger - RCM - View and Record All 2293 Fault PIDs
      • Refer to PID list in Normal Operation to view B2293 fault PIDs.
    • Do any on-demand DTC B2293 fault PIDs indicate a fault? 
    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 THE PASSENGER AIR BAG MODULES 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • If the fault PID was reported for the driver air bag module:
      • connect Restraint System Diagnostic Tool 418-F395 (2 required) to the driver air bag module loop 1 and loop 2 connectors.
    • If the fault PID was reported for the passenger air bag module:
      • disconnect passenger air bag module C256.
      • connect Restraint System Diagnostic Tool 418-F403 to passenger air bag module C256.
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Enter the following diagnostic mode on the diagnostic tool: Self Test - RCM
    • Enter the following diagnostic mode on the diagnostic tool: DataLogger - RCM - View and Record All 2293 Fault PIDs
      • Refer to PID list in Normal Operation to view B2293 fault PIDs.
    • Do any on-demand DTC B2293 fault PIDs indicate a fault? 
    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 2293_31_OD (Air Bag Circuit Short to Ground - Loop No. 1, Front Driver Side), go to  K3.

      For 2293_30_OD (Air Bag Circuit Short to Battery - Loop No. 1, Front Driver Side), go to  K5.

      For 2293_29_OD (Air Bag Circuit Open - Loop No. 1, Front Driver Side), go to  K7.

      For 2293_28_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 1, Front Driver Side), go to  K11.

      For 2293_27_OD (Air Bag Circuit Short to Ground - Loop No. 1, Front Passenger Side), go to  K14.

      For 2293_26_OD (Air Bag Circuit Short to Battery - Loop No. 1, Front Passenger Side), go to  K15.

      For 2293_25_OD (Air Bag Circuit Open - Loop No. 1, Front Passenger Side), go to  K16.

      For 2293_24_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 1, Front Passenger Side), go to  K18.

      For 2293_23_OD (Air Bag Circuit Short to Ground - Loop No. 2, Front Driver Side), go to  K20.

      For 2293_22_OD (Air Bag Circuit Short to Battery - Loop No. 2, Front Driver Side), go to  K22.

      For 2293_21_OD (Air Bag Circuit Open - Loop No. 2, Front Driver Side), go to  K24.

      For 2293_20_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 2, Front Driver Side), go to  K28.

      For 2293_19_OD (Air Bag Circuit Short to Ground - Loop No. 2, Front Passenger Side), go to  K31.

      For 2293_18_OD (Air Bag Circuit Short to Battery - Loop No. 2, Front Passenger Side), go to  K32.

      For 2293_17_OD (Air Bag Circuit Open - Loop No. 2, Front Passenger Side), go to  K33.

      For 2293_16_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 2, Front Passenger Side), go to  K35.

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

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

  3. K3 CHECK CIRCUITS 614 (GY/OG) AND 615 (GY/WH) FOR A SHORT TO GROUND BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 1 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: RCM C2041a and C2041b
    • Disconnect: Driver Air Bag Module Loop 1 Restraint System Diagnostic Tool
      • Fig 1: Checking Circuits 614 (GY/OG) & 615 (GY/WH) For A Short To Ground Between RCM & Driver Air Bag Module Loop 1
      GF0014930Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver air bag module:
      • loop 1 electrical connector, circuit 614 (GY/OG), harness side and ground.
      • loop 1 electrical connector, circuit 615 (GY/WH), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K4.
  4. K4 CHECK CIRCUITS 614 (GY/OG) AND 615 (GY/WH) FOR A SHORT TO GROUND BETWEEN THE RCM AND CLOCKSPRING 
    • Disconnect: Clockspring C2274
      • Fig 2: Checking Circuits 614 (GY/OG) & 615 (GY/WH) For A Short To Ground Between RCM & Clockspring
      GF0014931Courtesy of FORD MOTOR CO.
    • Measure the resistance between clockspring:
      • C2274-1, circuit 614 (GY/OG), harness side and ground.
      • C2274-2, circuit 615 (GY/WH), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . 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.

  5. K5 CHECK CIRCUITS 614 (GY/OG) AND 615 (GY/WH) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 1 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Air Bag Module Loop 1 Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • Measure the voltage between driver air bag module:
      • loop 1 electrical connector, circuit 614 (GY/OG), harness side and ground.
      • loop 1 electrical connector, circuit 615 (GY/WH), harness side and ground.
    • Is voltage present on either circuit? 
    1. YES  : Go to  K6.
    2. NO  : Go to  K37.
  6. K6 CHECK CIRCUITS 614 (GY/OG) AND 615 (GY/WH) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND CLOCKSPRING 
    • Key in OFF position.
    • Disconnect: Clockspring C2274
    • Key in ON position.
      • Fig 3: Checking Circuits 614 (GY/OG) & 615 (GY/WH) For A Short To Voltage Between RCM & Clockspring
      GF0014932Courtesy of FORD MOTOR CO.
    • Measure the voltage between clockspring:
      • C2274-1, circuit 614 (GY/OG), harness side and ground.
      • C2274-2, circuit 615 (GY/WH), harness side and ground.
    • Is voltage present on either circuit? 
    1. YES  : 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.

    2. NO  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
  7. K7 CHECK FOR AN OPEN ON CIRCUIT 614 (GY/OG) BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 1 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Air Bag Module Loop 1 Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
      • Fig 4: Checking For An Open On Circuit 614 (GY/OG) Between RCM & Driver Air Bag Module Loop 1
      GF0014933Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-1, circuit 614 (GY/OG), harness side and driver air bag module loop 1 electrical connector, circuit 614 (GY/OG), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K9.
    2. NO  : Go to  K8.
  8. K8 CHECK FOR AN OPEN ON CIRCUIT 614 (GY/OG) BETWEEN THE RCM AND CLOCKSPRING 
    • Disconnect: Clockspring C2274
      • Fig 5: Checking For An Open On Circuit 614 (GY/OG) Between RCM & Clockspring
      GF0014934Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-1, circuit 614 (GY/OG), harness side and clockspring C2274-1, circuit 614 (GY/OG), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
    2. NO  : REPAIR circuit 614 (GY/OG). Go to  K39.
  9. K9 CHECK FOR AN OPEN ON CIRCUIT 615 (GY/WH) BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 1 
      Fig 6: Checking For An Open On Circuit 615 (GY/WH) Between RCM & Driver Air Bag Module Loop 1
      GF0014935Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-2, circuit 615 (GY/WH), harness side and driver air bag module loop 1 electrical connector, circuit 615 (GY/WH), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K10.
  10. K10 CHECK FOR AN OPEN ON CIRCUIT 615 (GY/WH) BETWEEN THE RCM AND CLOCKSPRING 
    • Disconnect: Clockspring C2274
      • Fig 7: Checking For An Open On Circuit 615 (GY/WH) Between RCM & Clockspring
      GF0014936Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-2, circuit 615 (GY/WH), harness side and clockspring C2274-2, circuit 615 (GY/WH), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
    2. NO  : REPAIR circuit 615 (GY/WH). Go to  K39.
  11. K11 CHECK FOR A SHORT BETWEEN DRIVER AIR BAG LOOP 1 CIRCUITS 614 (GY/OG) AND 615 (GY/WH) 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Air Bag Module Loop 1 Restraint System Diagnostic Tool
    • Measure the resistance between driver air bag module loop 1 electrical connector, circuit 614 (GY/OG), harness side and circuit 615 (GY/WH), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K12.
  12. K12 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C2041a and C2041b
      • Fig 8: Measuring Resistance Between RCM Circuit 614 (GY/OG) And Circuit 615 (GY/WH)
      G04675877Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a pin 1, component side and pin 2, component side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K13.
    2. NO  : Go to  K37.
  13. K13 CHECK FOR A SHORT BETWEEN CIRCUITS 614 (GY/OG) AND 615 (GY/WH) 
    • Connect: RCM C2041a and C2041b
    • Disconnect: Clockspring C2274
      • Fig 9: Checking For A Short Between Circuits 614 (GY/OG) & 615 (GY/WH)
      GF0014937Courtesy of FORD MOTOR CO.
    • Measure the resistance between clockspring C2274-1, circuit 614 (GY/OG), harness side and C2274-2, circuit 615 (GY/WH), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
    2. NO  : REPAIR circuits 614 (GY/OG) and 615 (GY/WH). Go to  K39.
  14. K14 CHECK CIRCUITS 607 (LB/OG) AND 616 (PK/BK) FOR A SHORT TO GROUND BETWEEN THE RCM AND PASSENGER AIR BAG MODULE LOOP 1 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Air Bag Module Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
    • Measure the resistance between RCM:
      • C2041a-3, circuit 607 (LB/OG), harness side and ground.
      • C2041a-4, circuit 616 (PK/BK), harness side and ground.
    • Are the resistances greater than 10,000 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 616 (PK/BK). Go to  K39.

  15. K15 CHECK CIRCUITS 607 (LB/OG) AND 616 (PK/BK) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND PASSENGER AIR BAG MODULE LOOP 1 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Air Bag Module Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
      • Fig 10: Checking Circuits 607 (LB/OG) & 616 (PK/BK) For A Short To Voltage Between RCM & Passenger Air Bag Module Loop 1
      G03903673Courtesy of FORD MOTOR CO.
    • Measure the voltage between passenger air bag module:
      • C256-3, circuit 607 (LB/OG), harness side and ground.
      • C256-4, circuit 616 (PK/BK), harness side and ground.
    • Is voltage present on either circuit? 
    1. YES  : 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 616 (PK/BK). Go to  K39.

    2. NO  : Go to  K37.
  16. K16 CHECK FOR AN OPEN ON CIRCUIT 607 (LB/OG) BETWEEN THE RCM AND PASSENGER AIR BAG MODULE LOOP 1 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Air Bag Module Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
      • Fig 11: Checking For An Open On Circuit 607 (LB/OG) Between RCM & Passenger Air Bag Module Loop 1
      GF0014938Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-3, circuit 607 (LB/OG), harness side and passenger air bag module C256-3, circuit 607 (LB/OG), harness side.
    • 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 FOR AN OPEN ON CIRCUIT 616 (PK/BK) BETWEEN THE RCM AND PASSENGER AIR BAG MODULE LOOP 1 
      Fig 12: Checking For An Open On Circuit 616 (PK/BK) Between RCM & Passenger Air Bag Module Loop 1
      GF0014939Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-4, circuit 616 (PK/BK), harness side and passenger air bag module C256-4, circuit 616 (PK/BK), harness side.
    • 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 FOR A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 1 CIRCUITS 607 (LB/OG) AND 616 (PK/BK) 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Air Bag Module Restraint System Diagnostic Tool
      • Fig 13: Checking For A Short Between Passenger Air Bag Module Loop 1 Circuits 607 (LB/OG) & 616 (PK/BK)
      G03903679Courtesy of FORD MOTOR CO.
    • Measure the resistance between passenger air bag module C256-3, circuit 607 (LB/OG), harness side and C256-4, circuit 616 (PK/BK), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K19.
  19. K19 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C2041a and C2041b
      • Fig 14: Checking RCM For Low Resistance
      G03989625Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a pin 3, component side and pin 4, component side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuits 607 (LB/OG) and 616 (PK/BK). Go to  K39.
    2. NO  : Go to  K37.
  20. K20 CHECK CIRCUITS 1516 (YE/WH) AND 1517 (RD/OG) FOR A SHORT TO GROUND BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 2 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: RCM C2041a and C2041b
    • Disconnect: Driver Air Bag Module Loop 2 Restraint System Diagnostic Tool
      • Fig 15: Checking Circuits 1516 (YE/WH) & 1517 (RD/OG) For A Short To Ground Between RCM & Driver Air Bag Module Loop 2
      GF0013417Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver air bag module:
      • loop 2 electrical connector, circuit 1516 (YE/WH), harness side and ground.
      • loop 2 electrical connector, circuit 1517 (RD/OG), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K21.
  21. K21 CHECK CIRCUITS 1516 (YE/WH) AND 1517 (RD/OG) FOR A SHORT TO GROUND BETWEEN THE RCM AND CLOCKSPRING 
    • Disconnect: Clockspring C2274
      • Fig 16: Checking Circuits 1516 (YE/WH) & 1517 (RD/OG) For A Short To Ground Between RCM & Clockspring
      GF0014940Courtesy of FORD MOTOR CO.
    • Measure the resistance between clockspring:
      • C2274-8, circuit 1516 (YE/WH), harness side and ground.
      • C2274-9, circuit 1517 (RD/OG), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . 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 1517 (RD/OG). Go to  K39.

  22. K22 CHECK CIRCUITS 1516 (YE/WH) AND 1517 (RD/OG) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 2 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Air Bag Module Loop 2 Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
      • Fig 17: Checking Circuits 1516 (YE/WH) & 1517 (RD/OG) For A Short To Voltage Between RCM & Driver Air Bag Module Loop 2
      G03881011Courtesy of FORD MOTOR CO.
    • Measure the voltage between driver air bag module:
      • loop 2 electrical connector, circuit 1516 (YE/WH), harness side and ground.
      • loop 2 electrical connector, circuit 1517 (RD/OG), harness side and ground.
    • Is voltage present on either circuit? 
    1. YES  : Go to  K23.
    2. NO  : Go to  K37.
  23. K23 CHECK CIRCUITS 1516 (YE/WH) AND 1517 (RD/OG) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND CLOCKSPRING 
    • Key in OFF position.
    • Disconnect: Clockspring C2274
    • Key in ON position.
      • Fig 18: Checking Circuits 1516 (YE/WH) & 1517 (RD/OG) For A Short To Voltage Between RCM & Clockspring
      GF0014941Courtesy of FORD MOTOR CO.
    • Measure the voltage between clockspring connector:
      • C2274-8, circuit 1516 (YE/WH), harness side and ground.
      • C2274-9, circuit 1517 (RD/OG), harness side and ground.
    • Is voltage present on either circuit? 
    1. YES  : 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 1517 (RD/OG). Go to  K39.

    2. NO  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
  24. K24 CHECK FOR AN OPEN ON CIRCUIT 1516 (YE/WH) BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 2 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Air Bag Module Loop 2 Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
      • Fig 19: Checking For An Open On Circuit 1516 (YE/WH) Between RCM & Driver Air Bag Module Loop 2
      GF0014942Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-5, circuit 1516 (YE/WH), harness side and driver air bag module loop 2, circuit 1516 (YE/WH), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K26.
    2. NO  : Go to  K25.
  25. K25 CHECK FOR AN OPEN ON CIRCUIT 1516 (YE/WH) BETWEEN THE RCM AND CLOCKSPRING 
    • Disconnect: Clockspring C2274
      • Fig 20: Checking For An Open On Circuit 1516 (YE/WH) Between RCM & Clockspring
      GF0014943Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-5, circuit 1516 (YE/WH), harness side and clockspring C2274-8, circuit 1516 (YE/WH), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
    2. NO  : REPAIR circuit 1516 (YE/WH). Go to  K39.
  26. K26 CHECK FOR AN OPEN ON CIRCUIT 1517 (RD/OG) BETWEEN THE RCM AND DRIVER AIR BAG MODULE LOOP 2 
      Fig 21: Checking For An Open On Circuit 1517 (RD/OG) Between RCM & Driver Air Bag Module Loop 2
      GF0014944Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-6, circuit 1517 (RD/OG), harness side and driver air bag module loop 2, circuit 1517 (RD/OG), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K27.
  27. K27 CHECK FOR AN OPEN ON CIRCUIT 1517 (RD/OG) BETWEEN THE RCM AND CLOCKSPRING 
    • Disconnect: Clockspring C2274
      • Fig 22: Checking For An Open On Circuit 1517 (RD/OG) Between RCM & Clockspring
      GF0014945Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-6, circuit 1517 (RD/OG), harness side and clockspring C2274-9, circuit 1517 (RD/OG), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
    2. NO  : REPAIR circuit 1517 (RD/OG). Go to  K39.
  28. K28 CHECK FOR A SHORT BETWEEN DRIVER AIR BAG MODULE LOOP 2 CIRCUITS 1516 (YE/WH) AND 1517 (RD/OG) 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Air Bag Module Loop 2 Restraint System Diagnostic Tool
      • Fig 23: Checking For A Short Between Driver Air Bag Module Loop 2 Circuits 1516 (YE/WH) & 1517 (RD/OG)
      G04675893Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver air bag module loop 2 electrical connector, circuit 1516 (YE/WH), harness side, and circuit 1517 (RD/OG), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K29.
  29. K29 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C2041a and C2041b
      • Fig 24: Checking RCM For Low Resistance
      G03989635Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a pin 5, component side and pin 6, component side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K30.
    2. NO  : Go to  K37.
  30. K30 CHECK FOR A SHORT BETWEEN CIRCUITS 1516 (YE/WH) AND 1517 (RD/OG) 
    • Connect: RCM C2041a and C2041b
    • Disconnect: Clockspring C2274
      • Fig 25: Checking For A Short Between Circuits 1516 (YE/WH) & 1517 (RD/OG)
      GF0014946Courtesy of FORD MOTOR CO.
    • Measure the resistance between clockspring C2274-8, circuit 1516 (YE/WH), harness side and C2274-9, circuit 1517 (RD/OG), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : INSTALL a new clockspring. REFER to Clockspring . Go to  K39.
    2. NO  : REPAIR circuits 1516 (YE/WH) and 1517 (RD/OG). Go to  K39.
  31. K31 CHECK CIRCUITS 1518 (RD/WH) AND 1519 (LG/RD) FOR A SHORT TO GROUND BETWEEN THE RCM AND PASSENGER AIR BAG MODULE LOOP 2 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Air Bag Module Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
      • Fig 26: Checking Circuits 1518 (RD/WH) & 1519 (LG/RD) For A Short To Ground Between RCM & Passenger Air Bag Module Loop 2
      GF0014947Courtesy of FORD MOTOR CO.
    • Measure the resistance between passenger air bag module:
      • C256-1, circuit 1518 (RD/WH), harness side and ground.
      • C256-2, circuit 1519 (LG/RD), harness side and ground.
    • Are the resistances greater than 10,000 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 (RD/WH) or 1519 (LG/RD). Go to  K39.

  32. K32 CHECK CIRCUITS 1518 (RD/WH) AND 1519 (LG/RD) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND PASSENGER AIR BAG MODULE LOOP 2 
    1. YES  : 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 (RD/WH) or 1519 (LG/RD). Go to  K39.

    2. NO  : Go to  K37.
  33. K33 CHECK FOR AN OPEN ON CIRCUIT 1518 (RD/WH) BETWEEN THE RCM AND PASSENGER AIR BAG MODULE LOOP 2 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Air Bag Module Restraint System Diagnostic Tool
    • Disconnect: RCM C2041a and C2041b
      • Fig 27: Checking For An Open On Circuit 1518 (RD/WH) Between RCM & Passenger Air Bag Module Loop 2
      GF0014948Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-13, circuit 1518 (RD/WH), harness side and passenger air bag module C256-1, circuit 1518 (RD/WH), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  K34.
    2. NO  : REPAIR circuit 1518 (RD/WH). Go to  K39.
  34. K34 CHECK FOR AN OPEN ON CIRCUIT 1519 (LG/RD) BETWEEN THE RCM AND PASSENGER AIR BAG MODULE 
      Fig 28: Checking For An Open On Circuit 1519 (LG/RD) Between RCM & Passenger Air Bag Module
      GF0014949Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a-14, circuit 1519 (LG/RD), harness side and passenger air bag module C256-2, circuit 1519 (LG/RD), harness side.
    • 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 A SHORT BETWEEN PASSENGER AIR BAG MODULE LOOP 2 CIRCUITS 1518 (RD/WH) AND 1519 (LG/RD) 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Air Bag Module Restraint System Diagnostic Tool
      • Fig 29: Checking For A Short Between Passenger Air Bag Module Loop 2 Circuits 1518 (RD/WH) & 1519 (LG/RD)
      G03903697Courtesy of FORD MOTOR CO.
    • Measure the resistance between passenger air bag module C256-1, circuit 1518 (RD/WH), harness side and C256-2, circuit 1519 (LG/RD), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  K37.
    2. NO  : Go to  K36.
  36. K36 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C2041a and C2041b
      • Fig 30: Checking RCM For Low Resistance
      G03987332Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041a pin 13, component side and pin 14, component side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuits 1518 (RD/WH) and 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.
    • Connect: Driver or Passenger Air Bag Module Restraint System Diagnostic Tool(s)
    • Connect: RCM C2041a and C2041b
    • Connect: Clockspring C2274 (if previously disconnected)
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Enter the following diagnostic mode on the diagnostic tool: Self Test - RCM
    • Enter the following diagnostic mode on the diagnostic tool: DataLogger - RCM - View and Record All 2293 Fault PIDs
      • Refer to PID list in Normal Operation to view B2293 fault PIDs.
    • Does the original on-demand DTC B2293 fault PID indicate a fault? 
    1. YES  : INSTALL a new RCM. REFER to Restraints Control Module (RCM) . Go to  K39.
    2. NO  : Fault corrected. Go to  K39.
  38. K38 CHECK FOR AN INTERMITTENT FAULT 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • If the fault PID was reported for the driver air bag module:
      • connect restraint system diagnostic tools 418-F395 (2 required) to driver air bag module loop 1 and loop 2 connectors.
    • If the fault PID was reported for the passenger air bag module:
      • disconnect passenger air bag module C256.
      • connect Restraint System Diagnostic Tool 418-F403 to passenger air bag module C256.
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Enter the following diagnostic mode on the diagnostic tool: Self Test - RCM
    • Enter the following diagnostic mode on the diagnostic tool: DataLogger - RCM - View and Record All 2293 Fault PIDs
      • Refer to PID list in Normal Operation to view B2293 fault PIDs.
    • Do any on-demand DTC B2293 fault PIDs indicate a fault? 
    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, use the fault PIDs recorded and Go to the appropriate pinpoint test step.

      For 2293_31_OD (Air Bag Circuit Short to Ground - Loop No. 1, Front Driver Side), go to  K3.

      For 2293_30_OD (Air Bag Circuit Short to Battery - Loop No. 1, Front Driver Side), go to  K5.

      For 2293_29_OD (Air Bag Circuit Open - Loop No. 1, Front Driver Side), go to  K7.

      For 2293_28_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 1, Front Driver Side), go to  K11.

      For 2293_27_OD (Air Bag Circuit Short to Ground - Loop No. 1, Front Passenger Side), go to  K14.

      For 2293_26_OD (Air Bag Circuit Short to Battery - Loop No. 1, Front Passenger Side), go to  K15.

      For 2293_25_OD (Air Bag Circuit Open - Loop No. 1, Front Passenger Side), go to  K16.

      For 2293_24_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 1, Front Passenger Side), go to  K18.

      For 2293_23_OD (Air Bag Circuit Short to Ground - Loop No. 2, Front Driver Side), go to  K20.

      For 2293_22_OD (Air Bag Circuit Short to Battery - Loop No. 2, Front Driver Side), go to  K22.

      For 2293_21_OD (Air Bag Circuit Open - Loop No. 2, Front Driver Side), go to  K24.

      For 2293_20_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 2, Front Driver Side), go to  K28.

      For 2293_19_OD (Air Bag Circuit Short to Ground - Loop No. 2, Front Passenger Side), go to  K31.

      For 2293_18_OD (Air Bag Circuit Short to Battery - Loop No. 2, Front Passenger Side), go to  K32.

      For 2293_17_OD (Air Bag Circuit Open - Loop No. 2, Front Passenger Side), go to  K33.

      For 2293_16_OD (Air Bag Inflator Circuit Resistance Low - Loop No. 2, Front Passenger Side), go to  K35.

    2. NO  : CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness, cycling the ignition key frequently and rotating the steering wheel (driver air bag module fault). Do not install any new SRS components at this time. SRS components should only be installed when directed to do so in the pinpoint test.  REPAIR any intermittent wiring, terminal or connector concerns found. Go to  K39.
  39. K39 CHECK FOR ADDITIONAL SRS DTCs 
    • Key in OFF position.
      WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.
    • Reconnect all SRS components (if previously disconnected).
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Self Test - RCM
    • Are any RCM DTCs retrieved indicating a fault? 
    1. YES  : Do not clear any DTCs until all DTCs have been resolved. Go to the Supplemental Restraint System (SRS) DTC Chart  for pinpoint test direction.
    2. NO  : CLEAR all RCM continuous memory DTCs. PROVE OUT the SRS. Repair is complete. RETURN the vehicle to the customer.
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