LEMON Manuals: Even more car manuals for everyone
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 L: LFC 22 and 23/DTC B2295 - Restraint System - Side Airbag Fault >> Pinpoint Test L: LFC 22 And 23/DTC B2295 - Restraint System - Side Airbag Fault

Pinpoint Test L: LFC 22 And 23/DTC B2295 - Restraint System - Side 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.
WARNING: Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, 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. L1 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 2295 Fault PIDs
      • Refer to PID list in Normal Operation to view B2295 fault PIDs.
    • Do any on-demand DTC B2295 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  L2.
    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  L16.
  2. L2 CHECK THE DRIVER AND PASSENGER SEAT SIDE AIR BAG MODULES 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Affected Seat Side Air Bag Module C367 (Driver) or C337 (Passenger)
    • Connect: Restraint System Diagnostic Tool 418-133 to Affected Seat Side Air Bag Module C367 (Driver) or C337 (Passenger)
    • 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 2295 Fault PIDs
      • Refer to PID list in Normal Operation to view B2295 fault PIDs.
    • Do any on-demand DTC B2295 fault PIDs indicate a fault? 
    1. YES  : Using the fault PIDs recorded in Step L1, go to the appropriate pinpoint test step.

      For 2295_31_OD (Side Air Bag Circuit Short to Battery, Front Driver Side), go to  L3.

      For 2295_30_OD (Side Air Bag Circuit Short to Ground, Front Driver Side), go to  L4.

      For 2295_29_OD (Side Air Bag Circuit Open, Front Driver Side), go to  L5.

      For 2295_28_OD (Side Air Bag Circuit Resistance Low, Front Driver Side), go to  L7.

      For 2295_27_OD (Side Air Bag Circuit Short to Battery, Front Passenger Side), go to  L9.

      For 2295_26_OD (Side Air Bag Circuit Short to Ground, Front Passenger Side), go to  L10.

      For 2295_25_OD (Side Air Bag Circuit Open, Front Passenger Side), go to  L11.

      For passenger seat side air bag module with a low resistance fault (2295_24_OD (Side Air Bag Circuit Resistance Low, Front Passenger Side), go to  L13.

    2. NO  : REMOVE and INSPECT the seat side air bag module jumper harness for damage. If a concern is found, REPAIR the harness. If no concern is found in the harness or the harness cannot be repaired, INSTALL a new seat side air bag module. REFER to Side Air Bag Module . Go to  L17.
  3. L3 CHECK CIRCUITS 1257 (WH/LB) AND 1258 (RD) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND DRIVER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the SRS. 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
    • 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 1: Checking Circuits 1257 (WH/LB) & 1258 (RD) For A Short To Voltage Between RCM & Driver Seat Side Air Bag Module
      GF0000125Courtesy of FORD MOTOR CO.
    • Measure the voltage between driver seat side air bag module:
      • C367-1, circuit 1257 (WH/LB), harness side and ground.
      • C367-2, circuit 1258 (RD), 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 1257 (WH/LB) or 1258 (RD). Go to  L17.

    2. NO  : Go to  L15.
  4. L4 CHECK CIRCUITS 1257 (WH/LB) AND 1258 (RD) FOR A SHORT TO GROUND BETWEEN THE RCM AND DRIVER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the SRS. 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
      • Fig 2: Checking Circuits 1257 (WH/LB) & 1258 (RD) For A Short To Ground Between RCM & Driver Seat Side Air Bag Module
      GF0014950Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM:
      • C2041b-3, circuit 1257 (WH/LB), harness side and ground.
      • C2041b-4, circuit 1258 (RD), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  L15.
    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 1257 (WH/LB) or 1258 (RD). Go to  L17.

  5. L5 CHECK FOR AN OPEN ON CIRCUIT 1257 (WH/LB) BETWEEN THE RCM AND DRIVER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the SRS. 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
      • Fig 3: Checking Open Circuits 1257 (WH/LB) Between RCM And Driver Seat Side Air Bag Module
      GF0014951Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041b-3, circuit 1257 (WH/LB), harness side and driver seat side air bag module C367-1 (or driver seat side air bag bridge resistor C3108-1), circuit 1257 (WH/LB), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  L6.
    2. NO  : REPAIR circuit 1257 (WH/LB). Go to  L17.
  6. L6 CHECK FOR AN OPEN ON CIRCUIT 1258 (RD) BETWEEN THE RCM AND DRIVER SEAT SIDE AIR BAG MODULE 
      Fig 4: Checking Open Circuit 1258 (RD) Between RCM And Driver Seat Side Air Bag Module
      GF0014952Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041b-4, circuit 1258 (RD), harness side and driver seat side air bag module C367-2 (or driver seat side air bag bridge resistor C3108-2), circuit 1258 (RD), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  L15.
    2. NO  : REPAIR circuit 1258 (RD). Go to  L17.
  7. L7 CHECK FOR A SHORT BETWEEN DRIVER SEAT SIDE AIR BAG MODULE CIRCUITS 1257 (WH/LB) AND 1258 (RD) 
    • Key in OFF position.
    • Depower the SRS. 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.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  L15.
    2. NO  : Go to  L8.
  8. L8 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C2041a and C2041b
      • Fig 5: Checking RCM For Low Resistance
      GF0014953Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041b pin 3, component side and pin 4, component side.
    • Is the resistance greater than 10,000 ohms? 
    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 circuits 1257 (WH/LB) and 1258 (RD). Go to  L17.

    2. NO  : Go to  L15.
  9. L9 CHECK CIRCUITS 1259 (WH/YE) AND 1260 (BN/YE) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND PASSENGER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the SRS. 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
    • 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 6: Checking Circuits 1259 (WH/YE) & 1260 (BN/YE) For A Short To Voltage Between RCM & Passenger Seat Side Air Bag Module
      GF0000125Courtesy of FORD MOTOR CO.
    • Measure the voltage between passenger seat side air bag module:
      • C337-1, circuit 1259 (WH/YE), harness side and ground.
      • C337-2, circuit 1260 (BN/YE), 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 1259 (WH/YE) or 1260 (BN/YE). Go to  L17.

    2. NO  : Go to  L15.
  10. L10 CHECK CIRCUITS 1259 (WH/YE) AND 1260 (BN/YE) FOR A SHORT TO GROUND BETWEEN THE RCM AND PASSENGER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the SRS. 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
      • Fig 7: Checking Circuits 1259 (WH/YE) & 1260 (BN/YE) For A Short To Ground Between RCM & Passenger Seat Side Air Bag Module
      GF0014954Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM:
      • C2041b-5, circuit 1259 (WH/YE), harness side and ground.
      • C2041b-6, circuit 1260 (BN/YE), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  L15.
    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 1259 (WH/YE) or 1260 (BN/YE). Go to  L17.

  11. L11 CHECK FOR AN OPEN ON CIRCUIT 1259 (WH/YE) BETWEEN THE RCM AND PASSENGER SEAT SIDE AIR BAG MODULE 
    • Key in OFF position.
    • Depower the SRS. 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
      • Fig 8: Checking Open Circuits 1259 (WH/YE) Between RCM And Passenger Seat Side Air Bag Module
      GF0014955Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041b-5, circuit 1259 (WH/YE), harness side and passenger seat side air bag module C337-1, circuit 1259 (WH/YE), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  L12.
    2. NO  : REPAIR circuit 1259 (WH/YE). Go to  L17.
  12. L12 CHECK FOR AN OPEN ON CIRCUIT 1260 (BN/YE) BETWEEN THE RCM AND PASSENGER SEAT SIDE AIR BAG MODULE 
      Fig 9: Checking Open Circuit 1260 (BN/YE) Between RCM And Passenger Seat Side Air Bag Module
      GF0014956Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041b-6, circuit 1260 (BN/YE), harness side and passenger seat side air bag module C337-2, circuit 1260 (BN/YE), harness side.
    • Is the resistance less than 0.5 ohm? 
    1. YES  : Go to  L15.
    2. NO  : REPAIR circuit 1260 (BN/YE). Go to  L17.
  13. L13 CHECK FOR A SHORT BETWEEN PASSENGER SEAT SIDE AIR BAG MODULE CIRCUITS 1259 (WH/YE) AND 1260 (BN/YE) 
    • Key in OFF position.
    • Depower the SRS. 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.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  L15.
    2. NO  : Go to  L14.
  14. L14 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C2041a and C2041b
      • Fig 10: Checking RCM For Low Resistance
      GF0014957Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C2041b pin 5, component side and pin 6, component side.
    • Is the resistance greater than 10,000 ohms? 
    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 circuits 1259 (WH/YE) and 1260 (BN/YE). Go to  L17.

    2. NO  : Go to  L15.
  15. L15 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 and Passenger Seat Side Air Bag Module Restraint System Diagnostic Tool
    • Connect: 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 .
    • 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 2295 Fault PIDs
      • Refer to PID list in Normal Operation to view B2295 fault PIDs.
    • Does the original on-demand DTC B2295 fault PID indicate a fault? 
    1. YES  : INSTALL a new RCM. REFER to Restraints Control Module (RCM) . Go to  L17.
    2. NO  : CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. ACTIVATE other systems in the same wire harness. 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  L17.
  16. L16 CHECK FOR AN INTERMITTENT FAULT 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Affected Seat Side Air Bag Module C367 (Driver) or C337 (Passenger)
    • Connect: Restraint System Diagnostic Tool 418-133 to Affected Seat Side Air Bag Module C367 (Driver) or C337 (Passenger)
    • 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 2295 Fault PIDs
      • Refer to PID list in Normal Operation to view B2295 fault PIDs.
    • Do any on-demand DTC B2295 fault PIDs indicate a fault? 
    1. YES  : CHECK for causes of the intermittent fault at or near the affected seat side air bag connector. REPAIR any intermittent concerns found.

      If an intermittent concern was  found and repaired, go to  L17.

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

      For 2295_31_OD (Side Air Bag Circuit Short to Battery, Front Driver Side), go to  L3.

      For 2295_30_OD (Side Air Bag Circuit Short to Ground, Front Driver Side), go to  L4.

      For 2295_29_OD (Side Air Bag Circuit Open, Front Driver Side), go to  L5.

      For 2295_28_OD (Side Air Bag Circuit Resistance Low, Front Driver Side), go to  L7.

      For 2295_27_OD (Side Air Bag Circuit Short to Battery, Front Passenger Side), go to  L9.

      For 2295_26_OD (Side Air Bag Circuit Short to Ground, Front Passenger Side), go to  L10.

      For 2295_25_OD (Side Air Bag Circuit Open, Front Passenger Side), go to  L11.

      For passenger seat side air bag module with a low resistance fault (2295_24_OD (Side Air Bag Circuit Resistance Low, Front Passenger Side), go to  L13.

    2. NO  : CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. ACTIVATE other systems in the same wire harness. 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  L17.
  17. L17 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.
scientia non olet · About LEMON Manuals