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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> 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 B1058 - Driver Air Bag Cross Link to Another Firing Loop-Loop #2 >> Pinpoint Test M: DTC B1058 - Driver Air Bag Cross Link To Another Firing Loop-Loop #2

Pinpoint Test M: DTC B1058 - Driver Air Bag Cross Link To Another Firing Loop-Loop #2

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 CONTINUOUS AND ON-DEMAND 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: Retrieve/Record Continuous DTCs.
    • Was DTC B1058 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.

    For DTC B1058 and DTC:

    B1047, GO to  M2.

    B1048, GO to  M3.

    B1049, GO to  M4.

    B1054, GO to  M5.

    B1055, GO to  M6.

    B1057, GO to  M7.

    B1059, GO to  M8.

    No  : This is an intermittent fault. The fault condition is not present at this time. GO to  M10.

  2. M2 CHECK RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE SQUIB 2 CIRCUITS AND THE DRIVER SIDE AIR BAG MODULE CIRCUITS 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Disconnect: Driver Seat C311.
    • Measure the resistance between RCM:
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-10, circuit 15S-JA37 (GN/BK), harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-9, circuit 91S-JA37 (BK/GN), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-10, circuit 15S-JA37 (GN/BK), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-9, circuit 91S-JA37 (BK/GN), harness side.
        Fig 1: Checking Resistance Between Driver Air Bag Module Squib 2 Circuits And Driver Side Air Bag Module Circuits
        G04654872Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 

    Yes  : GO to  M9.

    No  : REPAIR the affected circuits. GO to  M11.

  3. M3 CHECK RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE SQUIB 2 CIRCUITS AND THE PASSENGER AIR BAG MODULE SQUIB 1 CIRCUITS 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Remove the passenger air bag module. Refer to PASSENGER AIR BAG MODULE  in this article.
    • Measure the resistance between RCM:
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041b-2, circuit 15S-JA31 (GN/WH) harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041b-1, circuit 91S-JA31 (BK/WH), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041b-2, circuit 15S-JA31 (GN/WH), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041b-1, circuit 91S-JA31 (BK/WH) harness side.
        Fig 2: Checking Resistance Between Driver Air Bag Module Squib 2 Circuits And Passenger Air Bag Module Squib 1 Circuits
        G04654873Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 

    Yes  : GO to  M9.

    No  : REPAIR the affected circuits. GO to  M11.

  4. M4 CHECK RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE SQUIB 2 CIRCUITS AND THE PASSENGER SAFETY BELT PRETENSIONER CIRCUITS 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Disconnect: Passenger Safety Belt Pretensioner C303.
    • Measure the resistance between RCM:
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-19, circuit 91S-JA34 (BK/RD), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-20, circuit 15S-JA34 (GN/OG), harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-19, circuit 91S-JA34 (BK/RD), harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-20, circuit 15S-JA34 (GN/OG), harness side.
        Fig 3: Checking Resistance Between Driver Air Bag Module Squib 2 Circuits And Passenger Safety Belt Pretensioner Circuits
        G04654874Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 

    Yes  : GO to  M9.

    No  : REPAIR the affected circuits. GO to  M11.

  5. M5 CHECK RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE SQUIB 2 CIRCUITS AND THE DRIVER SAFETY BELT PRETENSIONER CIRCUITS 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Disconnect: Driver Safety Belt Pretensioner C323.
    • Measure the resistance between RCM:
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-18, circuit 91S-JA33 (BK/BU), harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-18, circuit 91S-JA33 (BK/BU), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-17, circuit 15S-JA33 (GN/BU) harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-17, circuit 15S-JA33 (GN/BU), harness side.
        Fig 4: Checking Resistance Between Driver Air Bag Module Squib 2 Circuits And Driver Safety Belt Pretensioner Circuits
        G04654875Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 

    Yes  : GO to  M9.

    No  : REPAIR the affected circuits. GO to  M11.

  6. M6 CHECK RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE SQUIB 2 CIRCUITS AND THE PASSENGER SIDE AIR BAG MODULE CIRCUITS 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Disconnect: Passenger Seat C312.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Measure the resistance between RCM:
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-8, circuit 91S-JA38 (BK/RD), harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-8, circuit 91S-JA38 (BK/RD), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041a-7, circuit 15S-JA38 (GN/OG), harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041a-7, circuit 15S-JA38 (GN/OG), harness side.
        Fig 5: Checking Resistance Between Driver Air Bag Module Squib 2 Circuits And Passenger Side Air Bag Module Circuits
        G04654876Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 

    Yes  : GO to  M9.

    No  : REPAIR the affected circuits. GO to  M11.

  7. M7 CHECK RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE SQUIB 2 CIRCUITS AND THE DRIVER AIR BAG MODULE SQUIB 1 CIRCUITS 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Measure the resistance between RCM:
      • C2041b-4, circuit 91S-JA8 (BK/OG), harness side and RCM C2041b-9, circuit 8-JA48 (WH/GN), harness side.
      • C2041b-4, circuit 91S-JA8 (BK/OG), harness side and RCM C2041b-10, circuit 10-JA48 (GY/OG), harness side.
      • C2041b-3, circuit 15S-JA8 (GN/RD), harness side and RCM C2041b-9, circuit 8-JA48 (WH/GN), harness side.
      • C2041b-3, circuit 15S-JA8 (GN/RD), harness side and RCM C2041b-10, circuit 10-JA48 (GY/OG), harness side.
        Fig 6: Checking Resistance Between Driver Air Bag Module Squib 2 Circuits And Driver Air Bag Module Squib 1 Circuits
        G04654877Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 

    Yes  : GO to  M9.

    No  : REPAIR the affected circuits. GO to  M11.

  8. M8 CHECK RESISTANCE BETWEEN THE DRIVER AIR BAG MODULE SQUIB 2 CIRCUITS AND THE PASSENGER AIR BAG MODULE SQUIB 2 CIRCUITS 
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Disconnect: RCM C2041a and C2041b.
    • Remove the passenger air bag module. Refer to PASSENGER AIR BAG MODULE  in this article.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Measure the resistance between RCM:
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041b-8, circuit 15S-JA32 (GN/YE), harness side.
      • C2041b-10, circuit 10-JA48 (GY/OG), harness side and RCM C2041b-7, circuit 91S-JA32 (BK/YE), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041b-8, circuit 15S-JA32 (GN/YE), harness side.
      • C2041b-9, circuit 8-JA48 (WH/GN), harness side and RCM C2041b-7, circuit 91S-JA32 (BK/YE), harness side.
        Fig 7: Checking Resistance Between Driver Air Bag Module Squib 2 Circuits And Passenger Air Bag Module Squib 2 Circuits
        G04654878Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 1,000,000 ohms? 

    Yes  : GO to  M9.

    No  : REPAIR the affected circuits. GO to  M11.

  9. M9 CONFIRM THE RCM FAULT 
    NOTE: When the driver seat C311 or passenger seat C312 is disconnected and restraint system diagnostic tool is installed at C311e or C312e additional DTCs will be set and system prove out will not be possible. All DTCs must be cleared before the vehicle is returned to service.
    • Connect: Restraint System Diagnostic Tool 501-110 to Driver Air Bag Module Electrical Connector.
    • Connect: Restraint System Diagnostic Tool 418-F395 (2 required) to Passenger Air Bag Module C256a and C256b (If previously disconnected).
    • Connect: Restraint System Diagnostic Tool 501-109 to Driver Seat C311e (If driver seat C311 previously disconnected).
    • Connect: Restraint System Diagnostic Tool 501-109 to Passenger Seat C312e (If passenger seat C312 previously disconnected).
    • Connect: Restraint System Diagnostic Tool 418-F395 to Driver Safety Belt Pretensioner C323 (If previously disconnected).
    • Connect: Restraint System Diagnostic Tool 418-F395 to Passenger Safety Belt Pretensioner C303 (If previously disconnected).
    • Connect: RCM C2041a and C2041b.
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Was DTC B1058 retrieved during the on-demand self test? 

    Yes  : INSTALL and CONFIGURE a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM)  in this article. GO to  M11.

    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. REPAIR any intermittent concerns found. GO to  M11.

  10. M10 CHECK FOR AN INTERMITTENT FAULT 
    NOTE: When the driver seat C311 or passenger seat C312 is disconnected and restraint system diagnostic tool is installed at C311e or C312e additional DTCs will be set and system prove out will not be possible. All DTCs must be cleared before the vehicle is returned to service.
    • Key in OFF position.
    • Depower the system. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
    • Connect: Restraint System Diagnostic Tool 501-110 to Driver Air Bag Module Electrical Connector.
    • If DTC B1047 is also present continuous:
      • Disconnect driver seat C311.
      • Connect restraint system diagnostic tools 501-109 to driver seat C311e.
    • If DTC B1048 is also present continuous:
      • Remove the passenger air bag module. Refer to PASSENGER AIR BAG MODULE  in this article.
      • Connect restraint system diagnostic tools 418-F395 (2 required) to passenger air bag module C256a and C256b.
    • If DTC B1049 is also present continuous:
      • Disconnect the passenger safety belt pretensioner C303.
      • Connect restraint system diagnostic tool F418-395 to passenger safety belt pretensioner C303.
    • If DTC B1054 is also present continuous:
      • Disconnect the driver safety belt pretensioner C323.
      • Connect restraint system diagnostic tool F418-395 to driver safety belt pretensioner C323.
    • If DTC B1055 is also present continuous:
      • Disconnect passenger seat C312.
      • Connect restraint system diagnostic tool 501-109 to passenger seat C312e.
    • If DTC B1057 is also present continuous:
      • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE  in this article.
      • Connect restraint system diagnostic tool 501-110 to driver air bag module electrical connector.
    • If DTC B1059 is also present continuous:
      • Remove the passenger air bag module. Refer to PASSENGER AIR BAG MODULE  in this article.
      • Connect restraint system diagnostic tools 418-F395 (2 required) to passenger air bag module C256a and C256b.
    • Repower the system. Do not  prove out the system at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article.
    • Enter the following diagnostic mode on the scan tool: On-Demand Self Test.
    • Was DTC B1058 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.

    For DTC B1058 and DTC:

    B1047, GO to  M2.

    B1048, GO to  M3.

    B1049, GO to  M4.

    B1054, GO to  M5.

    B1055, GO to  M6.

    B1057, GO to  M7.

    B1059, GO to  M8.

    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. REPAIR any intermittent concerns found. GO to  M11.

  11. M11 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 DIAGNOSTIC TROUBLE CODES (DTCS)  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  in this article. REPOWER the system. REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this article. PROVE OUT the system. CLEAR all DTCs.

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