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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1401 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag And Safety Belt PRETENSIONER Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test G: DTC B2294 - Restraint System - Curtain Fault >> Pinpoint Test G: DTC B2294 - Restraint System - Curtain Fault

Pinpoint Test G: DTC B2294 - Restraint System - Curtain Fault

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
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 making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
NOTE: Supplemental restraint system (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: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
  1. G1 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 B2294 Fault PIDs
      • Refer to PID list in Normal Operation to view B2294 fault PIDs.
    • Do any RCM on-demand DTC B2294 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, go to the appropriate pinpoint test step.

      For 2294_28_OD (A - B or A - C Pillar Curtain Circuit Resistance Low, Driver Side), go to  G2.

      For 2294_29_OD (A - B or A - C Pillar Curtain Circuit Open, Driver Side), go to  G2.

      For 2294_30_OD (A - B or A - C Pillar Curtain Circuit Short to Ground, Driver Side), go to  G9.

      For 2294_31_OD (A - B or A - C Pillar Curtain Circuit Short to Battery, Driver Side), go to  G11.

    2. For 2294_24_OD (A - B or A - C Pillar Curtain Circuit Resistance Low, Passenger Side), go to  G12.

      For 2294_25_OD (A - B or A - C Pillar Curtain Circuit Open, Passenger Side), go to  G12.

      For 2294_26_OD (A - B or A - C Pillar Curtain Circuit Short to Ground, Passenger Side), go to  G19.

      For 2294_27_OD (A - B or A - C Pillar Curtain Circuit Short to Battery, Passenger Side), go to  G21.

    3. 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.

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

      For (2294_28_CM (A - B or A - C Pillar Curtain Circuit Resistance Low, Driver Side), 2294_29_CM (A - B or A - C Pillar Curtain Circuit Open, Driver Side), 2294_24_CM (A - B or A - C Pillar Curtain Circuit Resistance Low, Passenger Side) or 2294_25_CM (A - B or A - C Pillar Curtain Circuit Open, Passenger Side), go to  G24.

      For 2294_30_CM (A - B or A - C Pillar Curtain Circuit Short to Ground, Driver Side) or 2294_26_CM (A - B or A - C Pillar Curtain Circuit Short to Ground, Passenger Side), go to  G26.

      For 2294_31_CM (A - B or A - C Pillar Curtain Circuit Short to Battery, Driver Side) or 2294_27_CM (A - B or A - C Pillar Curtain Circuit Short to Battery, Passenger Side), go to  G27.

  2. G2 CHECK THE DRIVER SAFETY CANOPY MODULE RESISTANCE PID (DCURTL1) 
    • Enter the following diagnostic mode on the diagnostic tool: DataLogger - RCM - PID
    • Enter the following diagnostic mode on the diagnostic tool: DCURTL1 (Curtain Airbag Driver Loop No.1 Resistance) Resistance PID
    • Does the resistance PID value read between 1.31 and 4.29 ohms? 
    1. YES  : Go to  G23.
    2. NO  : Go to  G3.
  3. G3 CHECK THE DRIVER SAFETY CANOPY MODULE RESISTANCE PID (DCURTL1) WHILE CARRYING OUT A HARNESS TEST 
    • Continue monitoring the DCURTL1 (Curtain Airbag Driver Loop No.1 Resistance) Resistance PID while carrying out a harness test of the driver safety canopy circuits and accessible connectors (including any inline connectors) by wiggling connectors and flexing the wire harness.
    • Does the resistance PID value read between 1.31 and 4.29 ohms while carrying out the harness test? 
    1. YES  : DEPOWER the SRS and REPAIR the connector, terminals or wire harness as needed. Refer to SYSTEM WIRING DIAGRAMS , Connector Repair Procedures for schematic and connector information. Go to  G28.
    2. NO  : If the driver safety canopy resistance PID is less than 1.31 ohm, go to  G4.

      If the driver safety canopy resistance PID is greater than 4.29 ohms, go to  G7.

  4. G4 CHECK THE DRIVER SAFETY CANOPY MODULE CIRCUIT FAULT PIDs (2294_28_OD) AND (2294_29_OD) FOR LOW RESISTANCE AND OPEN 
    NOTE: This pinpoint test step will attempt to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Safety Canopy C3055
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • 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 The Following Fault PIDs
      • 2294_28_OD (A - B or A - C Pillar Curtain Circuit Resistance Low, Driver Side)
      • 2294_29_OD (A - B or A - C Pillar Curtain Circuit Open, Driver Side)
    • DIAGNOSTIC TIP:  When viewing DTC B2294 on-demand fault PIDs with the driver safety canopy disconnected, an open circuit fault would normally be retrieved.
    • Did the driver safety canopy on-demand fault PIDs change from indicating a low resistance to an open circuit fault? 
    1. YES  : Go to  G22.
    2. NO  : Go to  G5.
  5. G5 CHECK FOR A SHORT BETWEEN DRIVER SAFETY CANOPY CIRCUITS CR109 (BN/BU) AND RR109 (BU/GN) 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Measure the resistance between driver safety canopy C3055-1, circuit CR109 (BN/BU), harness side and C3055-2, circuit RR109 (BU/GN), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  G23.
    2. NO  : Go to  G6.
  6. G6 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C310a and C310b
      • Fig 1: Checking RCM For Low Resistance
      GF0021841Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C310b pin 21, component side, and C310b pin 22, component side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuits CR109 (BN/BU) and RR109 (BU/GN). Go to  G28.
    2. NO  : Go to  G23.
  7. G7 CHECK THE DRIVER SAFETY CANOPY MODULE CIRCUIT FAULT PIDs (2294_29_OD) AND (2294_28_OD) FOR AN OPEN 
    NOTE: This pinpoint test step will attempt to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Safety Canopy C3055
    • Connect a fused jumper wire between driver safety canopy C3055-1, circuit CR109 (BN/BU), harness side and C3055-2, circuit RR109 (BU/GN), harness side.
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • 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 The Following Fault PIDs
      • 2294_28_OD (A - B or A - C Pillar Curtain Circuit Resistance Low, Driver Side)
      • 2294_29_OD (A - B or A - C Pillar Curtain Circuit Open, Driver Side)
    • DIAGNOSTIC TIP:  When viewing DTC B2294 on-demand fault PIDs with the driver safety canopy circuits shorted together, a low resistance fault would normally be retrieved.
    • Did the driver safety canopy on-demand fault PIDs change from indicating an open circuit to a low resistance fault? 
    1. YES  : Go to  G22.
    2. NO  : Go to  G8.
  8. G8 CHECK CIRCUITS CR109 (BN/BU) AND RR109 (BU/GN) FOR AN OPEN BETWEEN THE RCM AND DRIVER SAFETY CANOPY MODULE 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Remove the fused jumper wire from the driver safety canopy C3055.
    • Disconnect: RCM C310a and C310b
      • Fig 2: Measuring Resistance Between RCM C310B-21, Circuit CR109 (BN/BU), Harness Side & Driver Safety Canopy C3055-1
      GF0026660Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C310b-21, circuit CR109 (BN/BU), harness side and driver safety canopy C3055-1, circuit CR109 (BN/BU), harness side.
      • Fig 3: Measuring Resistance Between RCM C310B-22, Circuit RR109 (BU/GN), Harness Side & Driver Safety Canopy C3055-2
      GF0026661Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C310b-22, circuit RR109 (BU/GN), harness side and driver safety canopy C3055-2, circuit RR109 (BU/GN), harness side.
    • Are the resistances less than 0.5 ohm? 
    1. YES  : Go to  G23.
    2. NO  : REPAIR circuit CR109 (BN/BU) or circuit RR109 (BU/GN). Go to  G28.
  9. G9 CHECK THE DRIVER SAFETY CANOPY MODULE CIRCUIT FAULT PIDs (2294_30_OD) AND (2294_29_OD) FOR A SHORT TO GROUND AND OPEN 
    NOTE: This pinpoint test step will attempt to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Driver Safety Canopy C3055
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • 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 The Following Fault PIDs
      • 2294_29_OD (A - B or A - C Pillar Curtain Circuit Open, Driver Side)
      • 2294_30_OD (A - B or A - C Pillar Curtain Circuit Short to Ground, Driver Side)
    • DIAGNOSTIC TIP:  When viewing DTC B2294 on-demand fault PIDs with the driver safety canopy disconnected, an open circuit fault would normally be retrieved.
    • Did the driver safety canopy on-demand fault PIDs change from indicating a short to ground to an open circuit fault? 
    1. YES  : Go to  G22.
    2. NO  : Go to  G10.
  10. G10 CHECK CIRCUITS CR109 (BN/BU) AND RR109 (BU/GN) FOR A SHORT TO GROUND BETWEEN THE RCM AND DRIVER SAFETY CANOPY MODULE 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: RCM C310a and C310b
      • Fig 4: Checking Circuits CR109 (BN/BU) & RR109 (BU/GN) For A Short To Ground Between RCM & Driver Safety Canopy Module
      GF0041246Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver safety canopy C3055-1, circuit CR109 (BN/BU), harness side and ground; and between driver safety canopy C3055-2, circuit RR109 (BU/GN), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  G23.
    2. NO  : Due to the shorting bar feature in the RCM electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.

      REPAIR circuit CR109 (BN/BU) or circuit RR109 (BU/GN). Go to  G28.

  11. G11 CHECK CIRCUITS CR109 (BN/BU) AND RR109 (BU/GN) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND DRIVER SAFETY CANOPY MODULE 
    1. YES  : Due to the shorting bar feature in the RCM electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.

      REPAIR circuit CR109 (BN/BU) or circuit RR109 (BU/GN). Go to  G28.

    2. NO  : Go to  G23.
  12. G12 CHECK THE PASSENGER SAFETY CANOPY MODULE RESISTANCE PID (PCURTL1) 
    • Enter the following diagnostic mode on the diagnostic tool: DataLogger - RCM - PID
    • Enter the following diagnostic mode on the diagnostic tool: PCURTL1 (Curtain Airbag Passenger Loop No.1 Resistance) Resistance PID
    • Does the resistance PID value read between 1.31 and 4.29 ohms? 
    1. YES  : Go to  G23.
    2. NO  : Go to  G13.
  13. G13 CHECK THE PASSENGER SAFETY CANOPY MODULE RESISTANCE PID (PCURTL1) WHILE CARRYING OUT A HARNESS TEST 
    • Continue monitoring the PCURTL1 (Curtain Airbag Passenger Loop No.1 Resistance) resistance PID while carrying out a harness test of the passenger safety canopy circuits and accessible connectors (including any inline connectors), by wiggling connectors and flexing the wire harness.
    • Does the resistance PID value read between 1.31 and 4.29 ohms while carrying out the harness test? 
    1. YES  : DEPOWER the SRS and REPAIR the connector, terminals or wire harness as needed. Refer to SYSTEM WIRING DIAGRAMS , Connector Repair Procedures for schematic and connector information. Go to  G28.
    2. NO  : If the passenger safety canopy resistance PID is less than 1.31 ohm, go to  G14.

      If the passenger safety canopy resistance PID is greater than 4.29 ohms, go to  G17.

  14. G14 CHECK THE PASSENGER SAFETY CANOPY MODULE CIRCUIT FAULT PIDs (2294_24_OD) AND (2294_25_OD) FOR LOW RESISTANCE AND OPEN 
    NOTE: This pinpoint test step will attempt to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Safety Canopy C3056
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • 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 The Following Fault PIDs
      • 2294_24_OD (A - B or A - C Pillar Curtain Circuit Resistance Low, Passenger Side)
      • 2294_25_OD (A - B or A - C Pillar Curtain Circuit Open, Passenger Side)
    • DIAGNOSTIC TIP:  When viewing DTC B2294 on-demand fault PIDs with the passenger safety canopy disconnected, an open circuit fault would normally be retrieved.
    • Did the passenger safety canopy on-demand fault PIDs change from indicating a low resistance to an open circuit fault? 
    1. YES  : Go to  G22.
    2. NO  : Go to  G15.
  15. G15 CHECK FOR A SHORT BETWEEN PASSENGER SAFETY CANOPY CIRCUITS CR111 (BN/WH) AND RR111 (YE/VT) 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Measure the resistance between passenger safety canopy module C3056-1, circuit CR111 (BN/WH), harness side and C3056-2, circuit RR111 (YE/VT), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  G23.
    2. NO  : Go to  G16.
  16. G16 CHECK THE RCM FOR LOW RESISTANCE 
    • Disconnect: RCM C310a and C310b
      • Fig 5: Checking RCM For Low Resistance
      GF0021845Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C310b pin 1, component side, and C310b pin 2, component side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuits CR111 (BN/WH) and RR111 (YE/VT). Go to  G28.
    2. NO  : Go to  G23.
  17. G17 CHECK THE PASSENGER SAFETY CANOPY MODULE CIRCUIT FAULT PIDs (2294_24_OD) AND (2294_24_OD) FOR AN FOR AN OPEN AND LOW RESISTANCE 
    NOTE: This pinpoint test step will attempt to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Safety Canopy C3056
    • Connect a fused jumper wire between passenger safety canopy C3056-1, circuit CR111 (BN/WH), harness side and C3056-2, circuit RR111 (YE/VT), harness side.
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • 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 The Following Fault PIDs
      • 2294_24_OD (A - B or A - C Pillar Curtain Circuit Resistance Low, Passenger Side)
      • 2294_25_OD (A - B or A - C Pillar Curtain Circuit Open, Passenger Side)
    • DIAGNOSTIC TIP:  When viewing DTC B2294 on-demand fault PIDs with the passenger safety canopy circuits shorted together, a low resistance fault would normally be retrieved.
    • Did the passenger safety canopy on-demand fault PIDs change from indicating an open circuit to a low resistance fault? 
    1. YES  : Go to  G22.
    2. NO  : Go to  G18.
  18. G18 CHECK CIRCUITS CR111 (BN/WH) AND RR111 (YE/VT) FOR AN OPEN BETWEEN THE RCM AND PASSENGER SAFETY CANOPY MODULE 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Remove the jumper wire from the passenger safety canopy C3056.
    • Disconnect: RCM C310a and C310b
      • Fig 6: Measuring Resistance Between RCM C310B-1, Circuit CR111 (BN/WH), Harness Side & Passenger Safety Canopy Module C3056-1
      GF0026663Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C310b-1, circuit CR111 (BN/WH), harness side and passenger safety canopy module C3056-1, circuit CR111 (BN/WH), harness side.
      • Fig 7: Measuring Resistance Between RCM C310B-2, Circuit RR111 (YE/VT), Harness Side & Passenger Safety Canopy Module C3056-2
      GF0026664Courtesy of FORD MOTOR CO.
    • Measure the resistance between RCM C310b-2, circuit RR111 (YE/VT), harness side and passenger safety canopy module C3056-2, circuit RR111 (YE/VT), harness side.
    • Are the resistances less than 0.5 ohm? 
    1. YES  : Go to  G23.
    2. NO  : REPAIR circuit CR111 (BN/WH) or circuit RR111 (YE/VT). Go to  G28.
  19. G19 CHECK THE PASSENGER SAFETY CANOPY MODULE CIRCUIT FAULT PIDs (2294_26_OD) AND (2294_25_OD) FOR A SHORT TO GROUND AND OPEN 
    NOTE: This pinpoint test step will attempt to change the fault reported by the RCM by inducing a different fault condition. If the fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: Passenger Safety Canopy C3056
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • 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 The Following Fault PIDs
      • 2294_25_OD (A - B or A - C Pillar Curtain Circuit Open, Passenger Side)
      • 2294_26_OD (A - B or A - C Pillar Curtain Circuit Short to Ground, Passenger Side)
    • DIAGNOSTIC TIP:  When viewing DTC B2294 on-demand fault PIDs with the passenger safety canopy disconnected, an open circuit fault would normally be retrieved.
    • Did the passenger safety canopy on-demand fault PIDs change from indicating a short to ground to an open circuit fault? 
    1. YES  : Go to  G22.
    2. NO  : Go to  G20.
  20. G20 CHECK CIRCUITS CR111 (BN/WH) AND RR111 (YE/VT) FOR A SHORT TO GROUND BETWEEN THE RCM AND PASSENGER SAFETY CANOPY MODULE 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect: RCM C310a and C310b
      • Fig 8: Checking Circuits CR111 (BN/WH) & RR111 (YE/VT) For A Short To Ground Between RCM & Passenger Safety Canopy Module
      GF0041246Courtesy of FORD MOTOR CO.
    • Measure the resistance between passenger safety canopy C3056-1, circuit CR111 (BN/WH), harness side and ground; and between passenger safety canopy C3056-2, circuit RR111 (YE/VT), harness side and ground.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  G23.
    2. NO  : Due to the shorting bar feature in the RCM electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.

      REPAIR circuit CR111 (BN/WH) or circuit RR111 (YE/VT). Go to  G28.

  21. G21 CHECK CIRCUITS CR111 (BN/WH) AND RR111 (YE/VT) FOR A SHORT TO VOLTAGE BETWEEN THE RCM AND PASSENGER SAFETY CANOPY MODULE 
    1. YES  : Due to the shorting bar feature in the RCM electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.

      REPAIR circuit CR111 (BN/WH) or circuit RR111 (YE/VT). Go to  G28.

    2. NO  : Go to  G23.
  22. G22 CONFIRM THE SAFETY CANOPY MODULE FAULT 
    NOTE: Make sure all restraint system components, 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.
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Connect: Affected Safety Canopy C3055 (Driver) C3056 (Passenger)
    • Connect: RCM C310a and C310b
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • 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 B2294 Fault PIDs
      • Refer to PID list in Normal Operation to view B2294 fault PIDs.
    • Does the original RCM on-demand B2294 fault PID indicate a fault? 
    1. YES  : INSTALL a new driver or passenger safety canopy. REFER to Side Air Curtain Module . Go to  G28.
    2. NO  : In the process of diagnosing the fault, the fault condition has become intermittent. Using the fault PIDs recorded, go to the appropriate pinpoint test step and CHECK for causes of the intermittent fault in the areas previously worked in, particularly the pins and terminals of electrical connectors that were disconnected.

      For (2294_28_CM (A - B or A - C Pillar Curtain Circuit Resistance Low, Driver Side), 2294_29_CM (A - B or A - C Pillar Curtain Circuit Open, Driver Side), 2294_24_CM (A - B or A - C Pillar Curtain Circuit Resistance Low, Passenger Side) or 2294_25_CM (A - B or A - C Pillar Curtain Circuit Open, Passenger Side), go to  G24.

      For 2294_30_CM (A - B or A - C Pillar Curtain Circuit Short to Ground, Driver Side) or 2294_26_CM (A - B or A - C Pillar Curtain Circuit Short to Ground, Passenger Side), go to  G26.

      For 2294_31_CM (A - B or A - C Pillar Curtain Circuit Short to Battery, Driver Side) or 2294_27_CM (A - B or A - C Pillar Curtain Circuit Short to Battery, Passenger Side), go to  G27.

  23. G23 CONFIRM THE RCM FAULT 
    NOTE: Make sure all restraint system components, 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.
    • Key in OFF position.
    • If previously directed to disconnect any SRS component(s):
      • connect all previously disconnected restraint system component(s), including RCM C310a and C310b.
    • Key in ON position.
    • 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 B2294 Fault PIDs
      • Refer to PID list in Normal Operation to view B2294 fault PIDs.
    • Does the original RCM on-demand B2294 fault PID indicate a fault? 
    1. YES  : INSTALL a new RCM. REFER to Restraints Control Module (RCM) . Go to  G28.
    2. NO  : In the process of diagnosing the fault, the fault condition has become intermittent. Using the fault PIDs recorded, go to the appropriate pinpoint test step and CHECK for causes of the intermittent fault in the areas previously worked in, particularly the pins and terminals of electrical connectors that were disconnected.

      For (2294_28_CM (A - B or A - C Pillar Curtain Circuit Resistance Low, Driver Side), 2294_29_CM (A - B or A - C Pillar Curtain Circuit Open, Driver Side), 2294_24_CM (A - B or A - C Pillar Curtain Circuit Resistance Low, Passenger Side) or 2294_25_CM (A - B or A - C Pillar Curtain Circuit Open, Passenger Side), go to  G24.

      For 2294_30_CM (A - B or A - C Pillar Curtain Circuit Short to Ground, Driver Side) or 2294_26_CM (A - B or A - C Pillar Curtain Circuit Short to Ground, Passenger Side), go to  G26.

      For 2294_31_CM (A - B or A - C Pillar Curtain Circuit Short to Battery, Driver Side) or 2294_27_CM (A - B or A - C Pillar Curtain Circuit Short to Battery, Passenger Side), go to  G27.

  24. G24 CHECK SAFETY CANOPY MODULE CIRCUIT RESISTANCE PIDs FOR AN INTERMITTENT LOW RESISTANCE OR OPEN  
    • If the fault PID was reported for the driver safety canopy, monitor the DCURTL1 (Curtain Airbag Driver Loop No.1 Resistance) resistance PID on the scan tool.
    • If the fault PID was reported for the passenger safety canopy, monitor the PCURTL1 (Curtain Airbag Passenger Loop No.1 Resistance) resistance PID on the scan tool.
      • NOTE: A resistance PID that reads between 0.9 and 1.31 ohms or between 4.29 and 5.0 ohms may or may not set an on-demand DTC yet indicates a strong potential of an intermittent fault condition. Make sure to thoroughly check wire harness(es), connectors and terminals as they are the likely source of the fault condition.
    • Attempt to recreate the fault by wiggling connectors (including any inline connectors) and flexing the wire harness.
    • Does any safety canopy resistance PID indicate less than 1.31 ohms or greater than 4.29 ohms? 
    1. YES  : DEPOWER the SRS and REPAIR as necessary. Refer to SYSTEM WIRING DIAGRAMS , Connector Repair Procedures for schematic and connector information. Go to  G28.
    2. NO  : Go to  G25.
  25. G25 CHECK THE HARNESS AND CONNECTORS 
    • Key in OFF position.
    • Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Disconnect the affected safety canopy module C3055 (driver) or C3056 (passenger):
      • inspect connector(s) (including any inline connectors) for corrosion, loose or spread terminals and loose or frayed wire connections at terminals.
      • inspect wire harness for any damage, pinched, cut or pierced wires.
    • Were any concerns found? 
    1. YES  : REPAIR as necessary. Refer to SYSTEM WIRING DIAGRAMS , Connector Repair Procedures for schematic and connector information. Go to  G28.
    2. NO  : The fault is not present and cannot be recreated at this time.

      CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness, cycling the ignition key frequently. 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  G28

  26. G26 CHECK SAFETY CANOPY MODULE CIRCUIT FAULT PIDs FOR AN INTERMITTENT SHORT TO GROUND 
    • Enter the following diagnostic mode on the diagnostic tool: DataLogger - RCM - PID
    • If the fault PID was reported for the driver safety canopy, monitor the 2294_30_OD (A - B or A - C Pillar Curtain Circuit Short to Ground, Driver Side) fault PID on the scan tool.
    • If the fault PID was reported for the passenger safety canopy, monitor the 2294_26_OD (A - B or A - C Pillar Curtain Circuit Short to Ground, Passenger Side) fault PID on the scan tool.
    • DIAGNOSTIC TIP:  When monitoring fault PIDs with the scan tool, it may take up to a 2-second delay for the scan tool display to update.
    • Attempt to recreate the fault by wiggling connectors (including any inline connectors), and flexing the wire harness.
    • Does any safety canopy on-demand fault PID indicate a fault is present? 
    1. YES  : DEPOWER the SRS and REPAIR as necessary. Refer to SYSTEM WIRING DIAGRAMS , Connector Repair Procedures for schematic and connector information. Go to  G28.
    2. NO  : The fault is not present and cannot be recreated at this time.

      CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness, cycling the ignition key frequently. 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  G28

  27. G27 CHECK SAFETY CANOPY MODULE CIRCUIT FAULT PIDs FOR AN INTERMITTENT SHORT TO VOLTAGE 
    • 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 safety canopy, disconnect the driver safety canopy module C3055.
    • If the fault PID was reported for the passenger safety canopy, disconnect the passenger safety canopy module C3056.
    • Repower the SRS. Do not  prove out the system at this time. Refer to Supplemental Restraint System (SRS) Depowering and Repowering .
    • Key in ON position.
    • DIAGNOSTIC TIP:  When monitoring fault PIDs with the scan tool, it may take up to a 2-second delay for the scan tool display to update.
    • Monitor the 2294_31_OD (A - B or A - C Pillar Curtain Circuit Short to Battery, Driver Side) or 2294_27_OD (A - B or A - C Pillar Curtain Circuit Short to Battery, Passenger Side) fault PIDs on the scan tool.
    • Attempt to recreate the fault by wiggling connectors (including any inline connectors) and flexing the wire harness.
    • Does any safety canopy on-demand fault PID indicate a fault is present? 
    1. YES  : DEPOWER the SRS and REPAIR as necessary. Refer to SYSTEM WIRING DIAGRAMS , Connector Repair Procedures for schematic and connector information. Go to  G28.
    2. NO  : The fault is not present and cannot be recreated at this time.

      CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness, cycling the ignition key frequently. 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  G28

  28. G28 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 - Restraints
    • Are any RCM and/or OCSM 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 and OCSM DTCs. PROVE OUT the SRS. REPAIR is complete. RETURN the vehicle to the customer.
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