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Home >> Ford >> 2020 >> Escape S, FWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Pinpoint Tests N - Z >> Pinpoint Test T : B11D8:12, B11D8:14

Pinpoint Test T : B11D8:12, B11D8:14

  1. Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.

    Normal Operation and Fault Conditions 

    The RCM transmits an event notification signal which communicates crash status and SRS deployment status to the BCM. When the BCM receives an event notification signal which indicates a crash, it initiates fuel cut-off.

    The RCM monitors the event notification signal circuit for the following faults:

    • Short to voltage
    • Short to ground
    • Open circuit

    If a fault is detected, the RCM stores DTC B11D8:12 or B11D8:14 in memory. The airbag warning indicator does not illuminate if B11D8:12 or B11D8:14 is set.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RCM B11D8:12 Restraint Event Notification: Circuit Short To Battery A fault is indicated when the RCM senses a short to voltage on the event notification signal circuit for more than 15 seconds.
    RCM B11D8:14 Restraint Event Notification: Circuit Short To Ground Or Open A fault is indicated when the RCM senses a short to ground or an open on the event notification signal circuit for more than 15 seconds.

    Possible Sources 

    • Wiring, terminals or connectors
    • BCM
    • RCM
    • PCM

  2. WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
  3. NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
  4. NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
  5. NOTE: Only disconnect or reconnect SRS components when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS.
  6. NOTE: Install new components only when directed to do so in the pinpoint test.
  7. NOTE: Always make sure the correct SRS component is being installed. Parts released for other vehicles may not be compatible even if they appear physically similar. Check the part number listed in the Ford parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, Diagnostic Trouble Codes (DTCs) may set.
  8. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

  9. T1 RETRIEVE RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    WARNING: Before beginning any service procedure in this information, refer to Safety Warnings in General Information. Failure to follow this instruction may result in serious personal injury.

    • Ignition ON.

    • Using a diagnostic scan tool, perform the RCM self-test to retrieve Diagnostic Trouble Codes (DTCs).

    Was DTC B11D8:12 or B11D8:14 retrieved on-demand during self-test? 

    Yes  This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during the self-test. For DTC B11D8:14, GO to  T2 For DTC B11D8:12, GO to  T5
    No  This is an intermittent fault when present as a CMDTC only. GO to  T8

  10. T2 CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect RCM C310A and C310B.

    • Disconnect BCM C2280F.

    • Disconnect For 1.5L vehicles, PCM C175B.

    • Disconnect For 2.0L vehicles, PCM C1551B.

    • Disconnect For HEV or PHEV vehicles, BECM C4237A.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310B-42
      GFD477174Courtesy of FORD MOTOR COMPANY
      		 C2280F-13

    Is the resistance less than 3 ohms? 

    Yes  GO to  T3
    No  REPAIR the circuit. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  T9

  11. T3 CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280F-13
      GFD477174Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  T4
    No  REPAIR the circuit. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  T9

  12. T4 CONFIRM THE BCM (BODY CONTROL MODULE) OR RCM (RESTRAINTS CONTROL MODULE) FAULT

    NOTE: Make sure all SRS electrical connectors and the BCM electrical connector are connected before carrying out the self-test. If not, Diagnostic Trouble Codes (DTCs) will be recorded.

    • Prior to reconnecting any previously disconnected SRS component:

      • Inspect connector(s) (including any inline connectors) for pushed-out, loose or spread terminals and loose or frayed wire connections at terminals.
      • Inspect wire harness for any damage, pinched, cut or pierced wires.
      • Repair any concerns found. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

    • Connect all  previously disconnected component(s) and connector(s).

    • Ignition ON.

    • Using a diagnostic scan tool, perform the RCM self-test to retrieve Diagnostic Trouble Codes (DTCs).

    Was DTC B11D8:14 retrieved on-demand during self-test? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) . CLEAR the RCM Diagnostic Trouble Codes (DTCs) and REPEAT the RCM self-test. If DTC B11D8:14 returns, INSTALL a new RCM. REFER to: Restraints Control Module (RCM) . GO to  T9 If DTC B11D8:14 does not return, GO to  T9
    No  In the process of diagnosing the fault, the fault condition has become intermittent. 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. GO to  T8

  13. T5 CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE

    NOTE: This pinpoint test step attempts 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.

    • Disconnect BCM C2280F.

    • Disconnect For 1.5L vehicles, PCM C175B.

    • Disconnect For 2.0L vehicles, PCM C1551B.

    • Disconnect For HEV or PHEV vehicles, BECM C4237A.

    • Using a diagnostic scan tool, perform the RCM self-test to retrieve Diagnostic Trouble Codes (DTCs).

    Was DTC B11D8:12 retrieved on-demand during self-test? 

    Yes  GO to  T6
    No  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) . GO to  T9

  14. T6 CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect RCM C310A and C310B.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280F-13
      GFD477956Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  T9
    No  GO to  T7

  15. T7 CONFIRM THE RCM (RESTRAINTS CONTROL MODULE) FAULT

    NOTE: Make sure all SRS electrical connectors and the BCM electrical connector are connected before carrying out the self-test. If not, Diagnostic Trouble Codes (DTCs) will be recorded.

    • Ignition OFF.

    • Prior to reconnecting any previously disconnected SRS component:

      • inspect connector(s) (including any inline connectors) for pushed-out, loose or spread terminals and loose or frayed wire connections at terminals.
      • inspect wire harness for any damage, pinched, cut or pierced wires.
      • repair any concerns found. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

    • Connect all  previously disconnected component(s) and connector(s).

    • Ignition ON.

    • Using a diagnostic scan tool, perform the RCM self-test to retrieve Diagnostic Trouble Codes (DTCs).

    Was the original DTC retrieved on-demand during self-test? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RCM. REFER to: Restraints Control Module (RCM) . GO to  T9
    No  In the process of diagnosing the fault, the fault condition has become intermittent. 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. GO to  T8

  16. T8 CHECK FOR AN INTERMITTENT FAULT

    • Ignition OFF.

    • Disconnect BCM C2280F.

    • Disconnect RCM C310A and C310B.

      • inspect connector(s) (including any inline connectors) for loose or spread terminals and loose or frayed wire connections at terminals.
      • inspect wire harness for any damage, pinched, cut or pierced wires.
      • repair any concerns found. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

    • Connect BCM C2280F.

    • Connect RCM C310A and C310B.

    • Ignition ON.

    • Using a diagnostic scan tool, perform the RCM self-test to retrieve Diagnostic Trouble Codes (DTCs).

    Was DTC B11D8:12 or B11D8:14 retrieved on-demand during self-test? 

    Yes  The fault condition is now present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during the self-test. For DTC B11D8:14, GO to  T2 For DTC B11D8:12, GO to  T5
    No  CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition frequently. ACTIVATE other systems in the same wire harness. Do not install any new SRS components at this time. Only install SRS components when directed to do so in the pinpoint test. REPAIR any intermittent concerns found. GO to  T9

  17. T9 CHECK FOR ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition OFF.

    • Connect all  previously disconnected component(s) and connector(s).

    • Ignition ON.

    • NOTE: When selecting Restraints from the Self Test menu, DTCs are retrieved from the RCM, OCSM and BECMB.

      Using a diagnostic scan tool, perform the

      Restraints  self-test.

    Are any RCM Diagnostic Trouble Codes (DTCs) retrieved? 

    Yes  Do not clear any Diagnostic Trouble Codes (DTCs) until all Diagnostic Trouble Codes (DTCs) have been resolved. DIAGNOSE and REPAIR the RCM and/or OCSM Diagnostic Trouble Codes (DTCs). REFER to RCM (DTC) Chart .
    No  The repair is complete. RETURN the vehicle to the customer.
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