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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 390 (Supplemental Inflatable Restraint System) >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test M: LFC 22 or 23/ DTC B2295 - Restraint System - Side Air Bag Fault >> Pinpoint Test M: DTC B2295 - Restraint System - Side Air Bag Fault

Pinpoint Test M: DTC B2295 - Restraint System - Side Air Bag Fault

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: When installing a new restraints control module (RCM), always make sure the correct RCM is being installed. The RCM 40-pin connector is keyed differently for vehicles with safety canopies and side air bags than the 40-pin connector for vehicles without safety canopies and side air bags. Do not force the 40-pin connector onto the RCM. If the connector is forced onto the RCM, damage to the RCM and/or connector will occur.
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:
    1. 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.
    2. Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow these instructions may result in the inadvertent deployment of the safety canopy and risk of personal injury.
    3. Never probe the connectors on the air bag module. Doing so can result in air bag deployment, which can result in personal injury.
    4. 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.
    5. Never probe the electrical connector on a safety canopy module. Doing so can result in safety canopy deployment.
    NOTE:
    1. If a seat equipped with a supplemental restraint system (SRS) component is being serviced, the SRS must be depowered.
    2. After diagnosing or repairing an SRS, the restraint system diagnostic tools must be removed before operating the vehicle over the road  .
    3. 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: DTC B2295/Record All Flagged Faults.
    • Enter the following diagnostic mode on the scan tool: Retrieve/Record/Flag Continuous DTCs.
    • Was DTC B2295 retrieved during the on-demand self test? 

    Yes:  This is a hard fault. The fault condition is still present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. GO to  M2.

    No:  This is an intermittent fault. The fault condition is not present at this time. GO to  M16.

  2. M2 CHECK THE DRIVER AND PASSENGER SEAT SIDE AIR BAG MODULES 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • If the flagged fault was reported for the driver seat side air bag module:
      • disconnect the driver seat side air bag module C367.
      • connect restraint system diagnostic tool 418-133 to driver seat side air bag module C367.
    • If the flagged fault was flagged for the passenger seat side air bag module:
      • disconnect the passenger seat side air bag module C337.
      • connect restraint system diagnostic tool 418-133 to passenger seat side air bag module C337.
    • 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 B2295/Record All Flagged Faults.
    • Was DTC B2295 retrieved during the on-demand self test? 

    Yes:  Using the flagged faults recorded in Step  M1, GO to the appropriate pinpoint test step.

    If a flagged fault of "?" was recorded in Step  M1, multiple faults exist and the entire pinpoint test must be carried out.

    For driver seat side air bag module with a short to battery fault, GO to  M3.

    For driver seat side air bag module with a short to ground fault, GO to  M4.

    For driver seat side air bag module with an open circuit fault, GO to  M5.

    For driver seat side air bag module with a low resistance fault, GO to  M7.

    For passenger seat side air bag module with a short to battery fault, GO to  M9.

    For passenger seat side air bag module with a short to ground fault, GO to  M10.

    For passenger seat side air bag module with an open circuit fault, GO to  M11.

    For passenger seat side air bag module with a low resistance fault, GO to  M13.

    No:  If a fault was flagged against the driver seat side air bag module in Step  M1, INSTALL a new driver seat side air bag module. REFER to SIDE AIR BAG MODULE . GO to  M17.

    If a fault was flagged against the passenger seat side air bag module in Step  M1, INSTALL a new passenger seat side air bag module. REFER to SIDE AIR BAG MODULE . GO to  M17.

  3. M3 CHECK CIRCUITS 1257 (WH/LB) AND 1258 (RD) FOR A SHORT TO BATTERY BETWEEN THE RCM AND THE DRIVER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Disconnect: RCM C2041a and C2041b.
    • Key in ON position.
    • Measure the voltage between driver side air bag module C367-1, circuit 1257 (WH/LB), harness side and ground; and between driver side air bag module C367-2, circuit 1258 (RD), harness side and ground.
      Fig 1: Checking Circuits 1257 (WH/LB) & 1258 (RD) For Short To Battery Between RCM & Driver Seat Side Air Bag Module
      G04622668Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 

    Yes:  GO to  M15.

    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 bars.

    REPAIR circuit 1257 (WH/LB) or 1258 (RD). GO to  M17.

  4. M4 CHECK CIRCUITS 1257 (WH/LB) AND 1258 (RD) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE DRIVER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Disconnect: RCM C2041a and C2041b.
    • Measure the resistance between RCM C2041-b, circuit 1257 (WH/LB), harness side and ground; and between RCM C2041b-2, circuit 1258 (RD), harness side and ground.
      Fig 2: Checking Circuits 1257 (WH/LB) & 1258 (RD) For Short To Ground Between RCM & Driver Seat Side Air Bag Module
      G04622669Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 

    Yes:  GO to  M15.

    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 bars.

    REPAIR circuit 1257 (WH/LB) or 1258 (RD). GO to  M17.

  5. M5 CHECK CIRCUIT 1257 (WH/LB) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Disconnect: RCM C2041a and C2041b.
    • Measure the resistance between RCM C2041b-1, circuit 1257 (WH/LB), harness side and driver seat side air bag module C367-1, circuit 1257 (WH/LB), harness side.
      Fig 3: Checking Circuit 1257 (WH/LB) For Open Between RCM & Driver Seat Side Air Bag Module
      G04622670Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes:  GO to  M6.

    No:  REPAIR circuit 1257 (WH/LB). GO to  M17.

  6. M6 CHECK CIRCUIT 1258 (RD) FOR AN OPEN BETWEEN THE RCM AND THE DRIVER SEAT SIDE AIR BAG MODULE 
    • Measure the resistance between RCM C2041b-2, circuit 1258 (RD), harness side and driver seat side air bag module C367-2, circuit 1258 (RD), harness side.
      Fig 4: Checking Circuit 1258 (RD) For Open Between RCM & Driver Seat Side Air Bag Module
      G04622671Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes:  GO to  M15.

    No:  REPAIR circuit 1258 (RD). GO to  M17.

  7. M7 CHECK FOR LOW RESISTANCE ON CIRCUITS 1257 (WH/LB) AND 1258 (RD) BETWEEN THE DRIVER SEAT SIDE AIR BAG MODULE AND RCM 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Measure the resistance between driver seat side air bag module C367-1, circuit 1257 (WH/LB), harness side and C367-2, circuit 1258 (RD), harness side.
      Fig 5: Checking For Low Resistance On Circuits 1257 (WH/LB) & 1258 (RD) Between Driver Seat Side Air Bag Module & RCM
      G04622672Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes:  GO to  M15.

    No:  GO to  M8.

  8. M8 CHECK FOR LOW RESISTANCE BETWEEN RCM PINS 1 AND 2 
    • Disconnect: RCM C2041a and C2041b.
    • Measure the resistance between RCM C2041b pin 1, component side and pin 2, component side.
      Fig 6: Checking For Low Resistance Between RCM Pins 1 & 2
      G04622673Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes:  REPAIR circuit 1257 (WH/LB) and circuit 1258 (RD). GO to  M17.

    No:  GO to  M15.

  9. M9 CHECK CIRCUITS 1259 (WH/YE) AND 1260 (BN/YE) FOR A SHORT TO BATTERY BETWEEN THE RCM AND THE PASSENGER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Disconnect: RCM C2041a and C2041b.
    • Key in ON position.
    • Measure the voltage between passenger side air bag module C337-1, circuit 1259 (WH/YE), harness side and ground; and between passenger side air bag module C337-2, circuit 1260 (BN/YE), harness side and ground.
      Fig 7: Checking Circuits 1259 (WH/YE) & 1260 (BN/YE) For Short To Battery Between RCM & Passenger Seat Side Air Bag Module
      G04622674Courtesy of FORD MOTOR CO.
    • Are the voltages less than 0.2 volt? 

    Yes:  GO to  M15.

    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 bars.

    REPAIR circuit 1259 (WH/YE) or circuit 1260 (BN/YE). GO to  M17.

  10. M10 CHECK CIRCUITS 1259 (WH/YE) AND 1260 (BN/YE) FOR A SHORT TO GROUND BETWEEN THE RCM AND THE PASSENGER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Disconnect: RCM C2041a and C2041b.
    • Measure the resistance between RCM C2041b-21, circuit 1259 (WH/YE), harness side and ground; and between RCM C2041b-22, circuit 1260 (BN/YE), harness side and ground.
      Fig 8: Checking Circuits 1259 (WH/YE) & 1260 (BN/YE) For Short To Ground Between RCM & Passenger Seat Side Air Bag Module
      G04622675Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 

    Yes:  GO to  M15.

    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 bars.

    REPAIR circuit 1259 (WH/YE) or circuit 1260 (BN/YE). GO to  M17.

  11. M11 CHECK CIRCUIT 1259 (WH/YE) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Disconnect: RCM C2041a and C2041b.
    • Measure the resistance between RCM C2041b-21, circuit 1259 (WH/YE), harness side and passenger seat side air bag module C337-1, circuit 1259 (WH/YE), harness side.
      Fig 9: Checking Circuit 1259 (WH/YE) For Open Between RCM & Passenger Seat Side Air Bag Module
      G04622676Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes:  GO to  M12.

    No:  REPAIR circuit 1259 (WH/YE). GO to  M17.

  12. M12 CHECK CIRCUIT 1260 (BN/YE) FOR AN OPEN BETWEEN THE RCM AND THE PASSENGER SEAT SIDE AIR BAG MODULE 
    • Measure the resistance between RCM C2041b-22, circuit 1260 (BN/YE), harness side and passenger seat side air bag module C337-2, circuit 1260 (BN/YE), harness side.
      Fig 10: Checking Circuit 1260 (BN/YE) For Open Between RCM & Passenger Seat Side Air Bag Module
      G04622677Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohm? 

    Yes:  GO to  M15.

    No:  REPAIR circuit 1260 (BN/YE). GO to  M17.

  13. M13 CHECK FOR LOW RESISTANCE ON CIRCUITS 1259 (WH/YE) AND 1260 (BN/YE) BETWEEN THE PASSENGER SEAT SIDE AIR BAG MODULE AND THE RCM 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag Module Restraint System Diagnostic Tool.
    • Measure the resistance between passenger seat side air bag module C337-1, circuit 1259 (WH/YE), harness side and C337-2, circuit 1260 (BN/YE), harness side.
      Fig 11: Checking For Low Resistance On 1259 (WH/YE) & 1260 (BN/YE) Between Passenger Seat Side Air Bag Module & RCM
      G04622678Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes:  GO to  M15.

    No:  GO to  M14.

  14. M14 CHECK FOR LOW RESISTANCE BETWEEN RCM CIRCUITS 1259 (WH/YE) AND 1260 (BN/YE) 
    • Disconnect: RCM C2041a and C2041b.
    • Measure the resistance between RCM C2041b pin 21, component side and pin 22, component side.
      Fig 12: Checking For Low Resistance Between RCM Circuits 1259 (WH/YE) & 1260 (BN/YE)
      G04622679Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes:  REPAIR circuit 1259 (WH/YE) and circuit 1260 (BN/YE). GO to  M17.

    No:  GO to  M15.

  15. M15 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. REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to  M17.

    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  M17.

  16. M16 CHECK FOR AN INTERMITTENT FAULT 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • If the flagged fault was reported for the driver seat side air bag module:
      • disconnect the driver seat side air bag module C367.
      • connect restraint system diagnostic tool 418-133 to driver seat side air bag module C367.
    • If the flagged fault was flagged for the passenger seat side air bag module:
      • disconnect the passenger seat side air bag module C337.
      • connect restraint system diagnostic tool 418-133 to passenger seat side air bag module C337.
    • 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 B2295/Record All Flagged Faults.
    • Was DTC B2295 retrieved during the on-demand self test? 

    Yes:  This is a hard fault. The fault condition is now present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. CHECK for causes of the intermittent fault at or near the affected seat side air bag module connector. REPAIR any intermittent concerns found.

    If an intermittent concern was  found and repaired, GO to  M17.

    If an intermittent concern was not  found and repaired, USE the flagged faults recorded and GO to the appropriate pinpoint test step.

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

    For driver seat side air bag module with a short to battery fault, GO to  M3.

    For driver seat side air bag module with a short to ground fault, GO to  M4.

    For driver seat side air bag module with an open circuit fault, GO to  M5.

    For driver seat side air bag module with a low resistance fault, GO to  M7.

    For passenger seat side air bag module with a short to battery fault, GO to  M9.

    For passenger seat side air bag module with a short to ground fault, GO to  M10.

    For passenger seat side air bag module with an open circuit fault, GO to  M11.

    For passenger seat side air bag module with a low resistance fault, GO to  M13.

    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 others systems in the same wire harness. REPAIR any intermittent concerns found. GO to  M17.

  17. M17 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) PRIORITY TABLE  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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