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Home >> Lincoln >> 2010 >> MKZ FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 307 (Supplemental Inflatable Restraint System) >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test M: DTC B2296 - Restraint System - Impact Sensor Fault >> Pinpoint Test M: DTC B2296 - Restraint System - Impact Sensor Fault

Pinpoint Test M: DTC B2296 - Restraint System - Impact Sensor Fault

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. 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. M1 CHECK FOR ON-DEMAND AND CONTINUOUS 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: Flag DTC B2296/Record All Flagged Faults.
    • Enter the following diagnostic mode on the scan tool: Retrieve/Record/Flag Continuous DTCs.
    • Was DTC B2296 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 a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.

    For driver side impact sensor with a mounting fault (LFC 4-12), GO to M2.

    For driver side impact sensor with a communications fault (LFC 4-3), GO to  M8.

    For driver side impact sensor with an internal fault (LFC 6-2), INSTALL a new driver side impact sensor. REFER to SIDE IMPACT SENSOR . GO to  M44.

    For driver side impact sensor with a short to ground fault (LFC 6-7), GO to  M7.

    For driver side impact sensor with a short to battery fault (LFC 6-12), GO to  M6.

    For passenger side impact sensor with a mounting fault (4-13), GO to  M12.

    For passenger side impact sensor with a communications fault (LFC 4-4), GO to  M18.

    For passenger side impact sensor with an internal fault (LFC 6-3), INSTALL a new first row passenger side impact sensor. REFER to SIDE IMPACT SENSOR . GO to  M44.

    For passenger side impact sensor with a short to ground fault (LFC 6-8), GO to  M17.

    For passenger side impact sensor with a short to battery fault (LFC 6-13), GO to  M16.

    For LH front impact severity sensor with a mounting fault (LFC 4-11), GO to  M22.

    For LH front impact severity sensor with a communications fault (LFC 4-2), GO to  M28.

    For LH front impact severity sensor with an internal fault (LFC 6-1), INSTALL a new front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR . GO to  M44.

    For LH front impact severity sensor with a short to ground fault (LFC 6-6), GO to  M27.

    For LH front impact severity sensor with a short to battery fault (LFC 6-11), GO to  M26.

    For RH front impact severity sensor with a mounting fault (LFC 12-2), GO to  M32.

    For RH front impact severity sensor with a communications fault (LFC 12-4), GO to  M38.

    For RH front impact severity sensor with an internal fault (LFC 12-3), INSTALL a new RH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR . GO to  M44.

    For RH front impact severity sensor with a short to ground fault (LFC 12-5), GO to  M37.

    For RH front impact severity sensor with a short to battery fault (LFC12-6), GO to  M36.

    No  : This is an intermittent fault. The fault condition is not present at this time. GO to  M43.

  2. M2 INSPECT THE DRIVER SIDE IMPACT SENSOR MOUNTING AND MOUNTING SURFACE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Access the driver side impact sensor. Refer to SIDE IMPACT SENSOR .
    • Inspect the driver side impact sensor for:
      • a loose electrical connector.
      • a loose sensor mounting bolt.
    • Remove the driver side impact sensor. Refer to SIDE IMPACT SENSOR .
    • Visually inspect the driver side impact sensor, alignment tabs, electrical connector and mounting surface for damage corrosion or dirt.
    • Was a significant amount of corrosion or dirt found, was the driver side impact sensor attached to the mounting surface incorrectly or were the impact sensor bolts not fully seated and tightened correctly? 

    Yes  : CLEAN and TIGHTEN the bolts to the required specification. REPAIR the mounting surface and electrical connections as necessary. REINSTALL the driver side impact sensor. GO to  M44.

    No  : GO to M3.

  3. M3 INSTALL THE DRIVER SIDE IMPACT SENSOR AND CARRY OUT THE ON-DEMAND SELF TEST 
    • Clean and repair the mounting surface as necessary.
    • Clean the driver side impact sensor mounting bolts.
    • Install the driver side impact sensor and tighten to the required specification.
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to M4.

    No  : Fault corrected. GO to  M44.

  4. M4 CHECK THE DRIVER SIDE IMPACT SENSOR GROUND CIRCUIT 1262 (BN/LG) FOR HIGH RESISTANCE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Side Impact Sensor C305.
    • Measure the resistance between driver side impact sensor C305-2, circuit 1262 (BN/LG), harness side and the driver side impact sensor case ground bolt.
      Fig 1: Measuring Resistance Between Driver Side Impact Sensor C305 Pin 2, Circuit 1262 And Driver Side Impact Sensor Case Ground Bolt
      G04586371Courtesy of FORD MOTOR CO.
    • Is the resistance less than 100 ohms? 

    Yes  : GO to  M11.

    No  : GO to M5.

  5. M5 CLEAN THE DRIVER SIDE IMPACT SENSOR MOUNTING SURFACE AND CARRY OUT THE ON-DEMAND SELF TEST 
    • Remove the driver side impact sensor. Refer to SIDE IMPACT SENSOR .
    • Clean and repair the mounting surface as necessary.
    • Clean the driver side impact sensor mounting bolts.
    • Install the driver side impact sensor and tighten to specifications.
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to  M11.

    No  : Fault corrected. GO to  M44.

  6. M6 CHECK CIRCUIT 1261 (WH/LG) AND CIRCUIT 1262 (BN/LG) FOR A SHORT TO VOLTAGE BETWEEN THE DRIVER SIDE IMPACT SENSOR AND THE RCM  
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Side Impact Sensor C305.
    • 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 .
    • Key in ON position.
    • Measure the voltage between driver side impact sensor C305-2, circuit 1262 (BN/LG), harness side and ground; and between C305-1, circuit 1261 (WH/LG), harness side and ground.
      Fig 2: Measuring Voltage Between Driver Side Impact Sensor C305-2, Circuit 1262 And Ground; And Between C305-1, Circuit 1261 And Ground
      G04586372Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 

    Yes  : GO to  M11.

    No  : REPAIR circuit 1261 (WH/LG) or circuit 1262 (BN/LG). GO to  M44.

  7. M7 CHECK CIRCUIT 1261 (WH/LG) AND CIRCUIT 1262 (BN/LG) FOR A SHORT TO GROUND BETWEEN THE DRIVER SIDE IMPACT SENSOR AND THE RCM  
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Side Impact Sensor C305.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between driver side impact sensor C305-2, circuit 1262 (BN/LG), harness side and ground; and between C305-1, circuit 1261 (WH/LG), harness side and ground.
      Fig 3: Measuring Resistance Between Driver Side Impact Sensor C305-2, Circuit 1262 And Ground; And Between C305-1, Circuit 1261 And Ground
      G04586373Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 

    Yes  : GO to  M11.

    No  : REPAIR circuit 1261 (WH/LG) or circuit 1262 (BN/LG). GO to  M44.

  8. M8 CHECK CIRCUIT 1261 (WH/LG) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER SIDE IMPACT SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Side Impact Sensor C305.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between RCM C310b-27, circuit 1261 (WH/LG), harness side and driver side impact sensor C305-1, circuit 1261 (WH/LG), harness side.
      Fig 4: Measuring Resistance Between RCM C310B Pin 27, Circuit 1261 And Driver Side Impact Sensor C305 Pin 1, Circuit 1261
      G04586374Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M9.

    No  : REPAIR circuit 1261 (WH/LG). GO to  M44.

  9. M9 CHECK CIRCUIT 1262 (BN/LG) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER SIDE IMPACT SENSOR 
    • Measure the resistance between RCM C310b-28, circuit 1262 (BN/LG), harness side and driver side impact sensor C305-2, circuit 1262 (BN/LG), harness side.
      Fig 5: Measuring Resistance Between RCM C310b Pin 28, Circuit 1262 And Driver Side Impact Sensor C305 Pin 2, Circuit 1262
      G04586375Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M10.

    No  : REPAIR circuit 1262 (BN/LG). GO to  M44.

  10. M10 CHECK CIRCUIT 1261 (WH/LG) FOR A SHORT TO CIRCUIT 1262 (BN/LG) BETWEEN THE RCM AND THE DRIVER SIDE IMPACT SENSOR 
    • Measure the resistance between driver side impact sensor C305-1, circuit 1261 (WH/LG), and C305-2, circuit 1262 (BN/LG), harness side.
      Fig 6: Measuring Resistance Between Driver Side Impact Sensor C305-1, Circuit 1261 And C305-2, Circuit 1262
      G04586376Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to M11.

    No  : REPAIR circuit 1261 (WH/LG) and circuit 1262 (BN/LG). GO to  M44.

  11. M11 CHECK THE DRIVER SIDE IMPACT SENSOR 

    Yes  : GO to  M42.

    No  : Fault corrected. GO to  M44.

  12. M12 INSPECT THE PASSENGER SIDE IMPACT SENSOR MOUNTING AND MOUNTING SURFACE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Access the passenger side impact sensor. Refer to SIDE IMPACT SENSOR .
    • Inspect the passenger side impact sensor for:
      • a loose electrical connector.
      • a loose sensor mounting bolt.
    • Remove the passenger side impact sensor. Refer to SIDE IMPACT SENSOR .
    • Visually inspect the passenger side impact sensor, alignment tabs, electrical connector and mounting surface for damage, corrosion or dirt.
    • Was a significant amount of corrosion or dirt found, was the passenger side impact sensor attached to the mounting surface incorrectly or were the sensor bolts not fully seated and tightened correctly? 

    Yes  : CLEAN and TIGHTEN the bolts to required specifications. REPAIR the mounting surface and electrical connections as necessary. REINSTALL the passenger side impact sensor. GO to  M44.

    No  : GO to M13.

  13. M13 INSTALL THE PASSENGER SIDE IMPACT SENSOR AND CARRY OUT THE ON-DEMAND SELF TEST 
    • Clean and repair the mounting surface as necessary.
    • Clean the passenger side impact sensor mounting bolts.
    • Install the passenger side impact sensor and tighten to the required specification.
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to M14.

    No  : Fault corrected. GO to  M44.

  14. M14 CHECK THE PASSENGER SIDE IMPACT SENSOR GROUND CIRCUIT 1264 (BN) FOR HIGH RESISTANCE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Side Impact Sensor C304.
    • Measure the resistance between passenger side impact sensor C304-2, circuit 1264 (BN), harness side and passenger side impact sensor case ground bolt.
      Fig 7: Measuring Resistance Between Driver Side Impact Sensor C305 Pin 2, Circuit 1262 (BN/LG), Harness Side And Driver Side Impact Sensor Case Ground Bolt
      G04586377Courtesy of FORD MOTOR CO.
    • Is the resistance less than 100 ohms? 

    Yes  : GO to  M21.

    No  : GO to M15.

  15. M15 CLEAN FIRST ROW PASSENGER SIDE IMPACT SENSOR MOUNTING SURFACE AND CARRY OUT HE ON-DEMAND SELF TEST 
    • Remove the passenger side impact sensor. Refer to SIDE IMPACT SENSOR .
    • Clean and repair the mounting surface as necessary.
    • Clean the passenger side impact sensor mounting bolts.
    • Install the passenger side impact sensor and tighten to the required specifications.
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to  M21.

    No  : Fault corrected. GO to  M44.

  16. M16 CHECK CIRCUIT 1264 (BN) AND CIRCUIT 1263 (WH) FOR A SHORT TO BATTERY BETWEEN THE PASSENGER SIDE IMPACT SENSOR AND THE RCM  
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Side Impact Sensor C304.
    • 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 .
    • Key in ON position.
    • Measure the voltage between passenger side impact sensor C304-2, circuit 1264 (BN), harness side and ground; and between C304-1, circuit 1263 (WH), harness side and ground.
      Fig 8: Measuring Voltage Between Passenger Side Impact Sensor C304-2, Circuit 1264 And Ground; And Between C304-1, Circuit 1263 And Ground
      G04586378Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 

    Yes  : GO to  M21.

    No  : REPAIR circuit 1264 (BN) or circuit 1263 (WH). GO to  M44.

  17. M17 CHECK CIRCUIT 1264 (BN) AND CIRCUIT 1263 (WH) FOR A SHORT TO GROUND BETWEEN THE PASSENGER SIDE IMPACT SENSOR AND THE RCM  
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Side Impact Sensor C304.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between passenger side impact sensor C304-2, circuit 1264 (BN), harness side and ground; and between C304-1, circuit 1263 (WH), harness side and ground.
      Fig 9: Measuring Resistance Between Passenger Side Impact Sensor C304-2, Circuit 1264 And Ground; And Between C304-1, Circuit 1263 And Ground
      G04586379Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 

    Yes  : GO to  M21.

    No  : REPAIR circuit 1264 (BN) or circuit 1263 (WH). GO to  M44.

  18. M18 CHECK CIRCUIT 1264 (BN) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER SIDE IMPACT SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Side Impact Sensor C304.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between RCM C310b-30, circuit 1264 (BN), harness side and passenger side impact sensor C304-2, circuit 1264 (BN), harness side.
      Fig 10: Measuring Resistance Between RCM C310b Pin 30, Circuit 1264 (BN), Harness Side And Passenger Side Impact Sensor C304 Pin 2, Circuit 1264
      G04586380Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M19.

    No  : REPAIR circuit 1264 (BN). GO to  M44.

  19. M19 CHECK CIRCUIT 1263 (WH) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER SIDE IMPACT SENSOR 
    • Measure the resistance between RCM C310b-29, circuit 1263 (WH), harness side and passenger side impact sensor C304-1, circuit 1263 (WH), harness side.
      Fig 11: Measuring Resistance Between RCM C310B Pin 29, Circuit 1263 And Passenger Side Impact Sensor C304 Pin 1, Circuit 1263
      G04586381Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M20.

    No  : REPAIR circuit 1263 (WH). GO to  M44.

  20. M20 CHECK CIRCUIT 1264 (BN) FOR A SHORT TO CIRCUIT 1263 (WH) BETWEEN THE RCM AND THE PASSENGER SIDE IMPACT SENSOR 
    • Measure the resistance between passenger side impact sensor C304-2, circuit 1264 (BN), harness side and C304-1, circuit 1263 (WH), harness side.
      Fig 12: Measuring Resistance Between Passenger Side Impact Sensor C304-2, Circuit 1264 And C304-1, Circuit 1263
      G04586382Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to M21.

    No  : REPAIR short between circuit 1264 (BN) and circuit 1263 (WH). GO to  M44.

  21. M21 CHECK THE PASSENGER SIDE IMPACT SENSOR 

    Yes  : GO to  M42.

    No  : Fault corrected. GO to  M44.

  22. M22 INSPECT THE LH FRONT IMPACT SEVERITY SENSOR MOUNTING AND MOUNTING SURFACE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Access the LH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Inspect the LH front impact severity sensor for:
      • a loose electrical connector.
      • a loose sensor mounting nut.
    • Remove the LH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Visually inspect the LH front impact severity sensor, alignment tabs, electrical connector and mounting surface for damage, corrosion or dirt.
    • Was a significant amount of corrosion or dirt found, was the LH front severity impact sensor attached to the mounting surface incorrectly or were the sensor bolts not fully seated and tightened correctly? 

    Yes  : CLEAN and TIGHTEN bolts to the required specification, or REPAIR the mounting surface as necessary. REINSTALL the LH front impact severity sensor. GO to  M44.

    No  : GO to M23.

  23. M23 INSTALL THE LH FRONT IMPACT SEVERITY SENSOR AND CARRY OUT THE ON-DEMAND SELF TEST 
    • Clean and repair the mounting surface as necessary.
    • Clean the LH front impact severity sensor mounting bolts.
    • Install the LH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to M24.

    No  : Fault corrected. GO to  M44.

  24. M24 CHECK THE LH FRONT IMPACT SEVERITY SENSOR GROUND CIRCUIT 618 (VT/LG) FOR HIGH RESISTANCE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: LH Front Impact Severity Sensor C1465.
    • Measure the resistance between the LH front impact severity sensor C1465-2, circuit 618 (VT/LG), harness side and driver front impact severity sensor case ground.
    • Is the resistance less than 100 ohms? 

    Yes  : GO to  M31.

    No  : GO to M25.

  25. M25 CLEAN THE LH FRONT IMPACT SEVERITY SENSOR MOUNTING SURFACE AND CARRY OUT THE ON-DEMAND SELF TEST 
    • Remove the LH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Clean and repair the mounting surface as necessary.
    • Clean the LH front impact severity sensor mounting bolts.
    • Install the LH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to  M31.

    No  : Fault corrected. GO to  M44.

  26. M26 CHECK CIRCUIT 617 (PK/OG) AND CIRCUIT 618 (VT/LG) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE LH FRONT IMPACT SEVERITY SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: LH Front Impact Severity Sensor C1465.
    • 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 .
    • Key in ON position.
    • Measure the voltage between LH front impact severity sensor C1465-1, circuit 617 (PK/OG), harness side and ground; and between LH front impact severity sensor C1465-2, circuit 618 (VT/LG), harness side and ground.
      Fig 13: Measuring Voltage Between LH Front Impact Severity Sensor C1465-1, Circuit 617 And Ground; And Between LH Front Impact Severity Sensor C1465-2, Circuit 618 And Ground
      G04586383Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 

    Yes  : GO to  M31.

    No  : REPAIR circuit 617 (PK/OG) or circuit 618 (VT/LG). GO to  M44.

  27. M27 CHECK CIRCUIT 617 (PK/OG) AND CIRCUIT 618 (VT/LG) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE LH FRONT IMPACT SEVERITY SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: LH Front Impact Severity Sensor C1465.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between LH front impact severity sensor C1465-1, circuit 617 (PK/OG), harness side and ground; and between LH front impact severity sensor C1465-2, circuit 618 (VT/LG), harness side and ground.
      Fig 14: Measuring Resistance Between LH Front Impact Severity Sensor C1465-1, Circuit 617 And Ground; And Between C1465-2, Circuit 618 And Ground
      G04586384Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 

    Yes  : GO to  M31.

    No  : REPAIR circuit 617 (PK/OG) or circuit 618 (VT/LG). GO to  M44.

  28. M28 CHECK CIRCUIT 617 (PK/OG) FOR AN OPEN BETWEEN THE RCM AND THE LH FRONT IMPACT SEVERITY SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: LH Front Impact Severity Sensor C1465.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between RCM C310b-19, circuit 617 (PK/OG), harness side and LH front impact severity sensor C1465-1, circuit 617 (PK/OG), harness side.
      Fig 15: Measuring Resistance Between RCM C310b Pin 19, Circuit 617 And LH Front Impact Severity Sensor C1465 Pin 1, Circuit 617
      G04586385Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M29.

    No  : REPAIR circuit 617 (PK/OG). GO to  M44.

  29. M29 CHECK CIRCUIT 618 (VT/LG) FOR AN OPEN BETWEEN THE RCM AND THE LH FRONT IMPACT SEVERITY SENSOR 
    • Measure the resistance between RCM C310b-20, circuit 618 (VT/LG), harness side and LH front impact severity sensor C1465-2, circuit 618 (VT/LG), harness side.
      Fig 16: Measuring Resistance Between RCM C310b Pin 20, Circuit 618 And LH Front Impact Severity Sensor C1465 Pin 2, Circuit 618
      G04586386Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M30.

    No  : REPAIR circuit 618 (VT/LG). GO to  M44.

  30. M30 CHECK CIRCUIT 617 (PK/OG) FOR A SHORT TO CIRCUIT 618 (VT/LG) BETWEEN THE RCM AND THE LH FRONT IMPACT SEVERITY SENSOR 
    • Measure the resistance between LH front impact severity sensor C1465-1, circuit 617 (PK/OG), harness side and LH front impact severity sensor C1465-2, circuit 618 (VT/LG), harness side.
      Fig 17: Measuring Resistance Between LH Front Impact Severity Sensor C1465-1, Circuit 617 And LH Front Impact Severity Sensor C1465-2, Circuit 618
      G04586387Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to M31.

    No  : REPAIR circuits 617 (PK/OG) and circuit 618 (VT/LG). GO to  M44.

  31. M31 CHECK THE LH FRONT IMPACT SEVERITY SENSOR 

    Yes  : GO to  M42.

    No  : Fault corrected. GO to  M44.

  32. M32 INSPECT THE RH FRONT IMPACT SEVERITY SENSOR MOUNTING AND MOUNTING SURFACE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Access the RH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Inspect the RH front impact severity sensor for:
      • a loose electrical connector.
      • a loose sensor mounting nut.
    • Remove the RH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Visually inspect the RH front impact severity sensor, alignment tabs, electrical connector and mounting surface for damage, corrosion or dirt.
    • Was a significant amount of corrosion or dirt found, was the RH front severity impact sensor attached to the mounting surface incorrectly or were the sensor bolts not fully seated and tightened correctly? 

    Yes  : CLEAN and TIGHTEN bolts to the required specification, or REPAIR the mounting surface as necessary. REINSTALL the RH front impact severity sensor. GO to  M44.

    No  : GO to M33.

  33. M33 INSTALL THE RH FRONT IMPACT SEVERITY SENSOR AND CARRY OUT THE ON-DEMAND SELF TEST 
    • Clean and repair the mounting surface as necessary.
    • Clean the RH front impact severity sensor mounting bolts.
    • Install the RH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to M34.

    No  : Fault corrected. GO to  M44.

  34. M34 CHECK THE RH FRONT IMPACT SEVERITY SENSOR GROUND CIRCUIT 620 (VT/LB) FOR HIGH RESISTANCE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RH Front Impact Severity Sensor C1466.
    • Measure the resistance between RH front impact severity sensor C1466-2, circuit 620 (VT/LB), harness side and RH front impact severity sensor case ground.
    • Is the resistance less than 100 ohms? 

    Yes  : GO to  M41.

    No  : GO to M35.

  35. M35 CLEAN THE RH FRONT IMPACT SEVERITY SENSOR MOUNTING SURFACE AND CARRY OUT THE ON-DEMAND SELF TEST 
    • Remove the RH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Clean and repair the mounting surface as necessary.
    • Clean the RH front impact severity sensor mounting nuts.
    • Install the RH front impact severity sensor. Refer to FRONT IMPACT SEVERITY SENSOR .
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 retrieved during the on-demand self test? 

    Yes  : GO to  M41.

    No  : Fault corrected. GO to  M44.

  36. M36 CHECK CIRCUIT 619 (PK/WH) AND CIRCUIT 620 (VT/LB) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND THE RH FRONT IMPACT SEVERITY SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RH Front Impact Severity Sensor C1466.
    • 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 .
    • Key in ON position.
    • Measure the voltage between RH front impact severity sensor C1466-1, circuit 619 (PK/WH), harness side and ground; and between RH front impact severity sensor C1466-2, circuit 620 (VT/LB), harness side and ground.
      Fig 18: Measuring Voltage Between RH Front Impact Severity Sensor C1466-1, Circuit 619 And Ground; And Between RH Front Impact Severity Sensor C1466-2, Circuit 620 And Ground
      G04586388Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 

    Yes  : GO to  M41.

    No  : REPAIR circuit 619 (PK/WH) or circuit 620 (VT/LB). GO to  M44.

  37. M37 CHECK CIRCUIT 619 (PK/WH) AND CIRCUIT 620 (VT/LB) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE RH FRONT IMPACT SEVERITY SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RH Front Impact Severity Sensor C1466.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between RH front impact severity sensor C1466-1, circuit 619 (PK/WH), harness side and ground; and between RH front impact severity sensor C1466-2, circuit 620 (VT/LB), harness side and ground.
      Fig 19: Measuring Resistance Between RH Front Impact Severity Sensor C1466-1, Circuit 619 And Ground; And Between RH Front Impact Severity Sensor C1466-2, Circuit 620 And Ground
      G04586389Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 

    Yes  : GO to  M41.

    No  : REPAIR circuit 619 (PK/WH) or circuit 620 (VT/LB). GO to  M44.

  38. M38 CHECK CIRCUIT 619 (PK/WH) FOR AN OPEN BETWEEN THE RCM AND THE RH FRONT IMPACT SEVERITY SENSOR 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RH Front Impact Severity Sensor C1466.
    • Disconnect: RCM C310a and C310b.
    • Measure the resistance between RCM C310b-39, circuit 619 (PK/WH), harness side and RH front impact severity sensor C1466-1, circuit 619 (PK/WH), harness side.
      Fig 20: Measuring Resistance Between RCM C310B-39, Circuit 619 And RH Front Impact Severity Sensor C1466-1, Circuit 619
      G04586390Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M39.

    No  : REPAIR circuit 619 (PK/WH). GO to  M44.

  39. M39 CHECK CIRCUIT 620 (VT/LB) FOR AN OPEN BETWEEN THE RCM AND THE RH FRONT IMPACT SEVERITY SENSOR 
    • Measure the resistance between RCM C310b-40, circuit 620 (VT/LB), harness side and RH front impact severity sensor C1466-2, circuit 620 (VT/LB), harness side.
      Fig 21: Measuring Resistance Between RCM C310B-40, Circuit 620 And RH Front Impact Severity Sensor C1466-2, Circuit 620
      G04586391Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes  : GO to M40.

    No  : REPAIR circuit 620 (VT/LB). GO to  M44.

  40. M40 CHECK CIRCUIT 619 (PK/WH) FOR A SHORT TO CIRCUIT 620 (VT/LB) BETWEEN THE RCM AND THE RH FRONT IMPACT SEVERITY SENSOR 
    • Measure the resistance between RH front impact severity sensor C1466-1, circuit 619 (PK/WH), harness side and RH front impact severity sensor C1466-2, circuit 620 (VT/LB), harness side.
      Fig 22: Measuring Resistance Between RH Front Impact Severity Sensor C1466-1, Circuit 619 And RH Front Impact Severity Sensor C1466-2, Circuit 620
      G04586392Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to M41.

    No  : REPAIR circuits 619 (PK/WH) and circuit 620 (VT/LB). GO to  M44.

  41. M41 CHECK THE FRONT IMPACT SEVERITY SENSOR 

    Yes  : GO to M42.

    No  : Fault corrected. GO to  M44.

  42. M42 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  : If a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out

    INSTALL a new RCM . GO to  M44.

    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  M44.

  43. M43 CHECK FOR AN INTERMITTENT FAULT 
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Enter the following diagnostic mode on the scan tool: Flag DTC B2296/Record All Flagged Faults.
    • Was DTC B2296 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 a flagged fault of "?" was recorded, multiple faults exist and the entire pinpoint test must be carried out.

    For driver side impact sensor with a mounting fault (LFC 4-12), GO to  M2.

    For driver side impact sensor with a communications fault (LFC 4-3), GO to  M8.

    For driver side impact sensor with an internal fault (LFC 6-2), INSTALL a new driver side impact sensor. REFER to SIDE IMPACT SENSOR . GO to M44.

    For driver side impact sensor with a short to ground fault (LFC 6-7), GO to  M7.

    For driver side impact sensor with a short to battery fault (LFC 6-12), GO to  M6.

    For passenger side impact sensor with a mounting fault (4-13), GO to  M12.

    For passenger side impact sensor with a communications fault (LFC 4-4), GO to  M18.

    For passenger side impact sensor with an internal fault (LFC 6-3), INSTALL a new first row passenger side impact sensor. REFER to SIDE IMPACT SENSOR . GO to M44.

    For passenger side impact sensor with a short to ground fault (LFC 6-8), GO to  M17.

    For passenger side impact sensor with a short to battery fault (LFC 6-13), GO to  M16.

    For LH front impact severity sensor with a mounting fault (LFC 4-11), GO to  M22.

    For LH front impact severity sensor with a communications fault (LFC 4-2), GO to  M28.

    For LH front impact severity sensor with an internal fault (LFC 6-1), INSTALL a new front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR . GO to M44.

    For LH front impact severity sensor with a short to ground fault (LFC 6-6), GO to  M27.

    For LH front impact severity sensor with a short to battery fault (LFC 6-11), GO to  M26.

    For RH front impact severity sensor with a mounting fault (LFC 12-2), GO to  M32.

    For RH front impact severity sensor with a communications fault (LFC 12-4), GO to  M38.

    For RH front impact severity sensor with an internal fault (LFC 12-3), INSTALL a new RH front impact severity sensor. REFER to FRONT IMPACT SEVERITY SENSOR . GO to M44.

    For RH front impact severity sensor with a short to ground fault (LFC 12-5), GO to  M37.

    For RH front impact severity sensor with a short to battery fault (LFC12-6), GO to  M36.

    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 M44.

  44. M44 CHECK FOR ADDITIONAL DTCs 
    • Refer to the continuous DTCs recorded during Step  M1.
    • Were any continuous DTCs retrieved during Step   M1 ? 

    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.

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

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