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Home >> Ford >> 2012 >> Explorer Limited, 3.5 8, AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Routine A - M >> Diagnostic Routine I >> Pinpoint Test

Pinpoint Test

WARNING: Do not handle, move or change the original horizontal mounting position of the RCM while the RCM is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the Safety Canopy® and cause serious personal injury or death.
WARNING: Never disassemble or tamper with seat belt deployable components, including pretensioners, load limiters and inflators. Never backprobe deployable device electrical connectors. Tampering or backprobing may cause an accidental deployment and result in personalinjury or death.
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: 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.
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 Catalog Advantage or equivalent to make sure the correct component is being installed. If an incorrect SRS component is installed, DTCs  may set.
NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
  1. RETRIEVE RCM DTCs 
    1. Ignition ON.
    2. Using a scan tool, perform RCM self-test to retrieve DTCs  .

    Was DTC B0050:11, B0050:12, B0050:13 or B0050:1D retrieved on-demand during self-test? 

    1. Yes:
      • This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test.
      • For DTC B0050:11 or B0050:1D, GO to 2  .
      • For DTC B0050:12, GO to  4.
      • For DTC B0050:13, GO to  5.
    2. No
      • This is an intermittent fault when present as a CMDTC  only. GO to  10.
  2. CHECK THE DRIVER SEATBELT SENSOR DTC FOR A FAULT STATUS CHANGE (SHORT TO GROUND OR CURRENT OUT OF RANGE INDICATED)
    NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the reported fault changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. Disconnect Driver Safety Belt Buckle Switch C3065.
    4. Repower the SRS. Do not  prove out the SRS at this time. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    5. Ignition ON.
    6. Using a scan tool, perform RCM self-test to retrieve DTCs  .
    7. DIAGNOSTIC TIP:  When viewing DTCs  with the driver safety belt buckle switch disconnected, an open circuit fault is normally retrieved. An open circuit fault is also normally retrieved for the driver safety belt buckle pretensioner circuits.

    Did the on-demand DTC change from B0050:11 or B0050:1D to B0050:13? 

    1. Yes:
      • GO to  8.
    2. No
      • For DTC B0050:11, GO to 3  .
      • For DTC B0050:1D, GO to  9.
  3. CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH CIRCUIT FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. Disconnect RCM C310A and C310B.
    4. Measure:
      Driver Safety Belt Buckle Switch Ground
      G08041296
      G08041297
      C3065 Ground
      Pin Circuit Measurement Pin Circuit
      3 CR201 (GN/BU)
      G08041298
      		 - Ground

    Is the resistance greater than 10, 000 ohms? 

    1. Yes:
      • GO to  9.
    2. No
  4. CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH CIRCUIT FOR A SHORT TO VOLTAGE
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. Disconnect RCM C310A and C310B.
    4. Disconnect Driver Seat Side Air Bag Module (Inline) C3051.
    5. Disconnect Driver Safety Belt Buckle Switch C3065.
    6. Repower the SRS. Do not  prove out the SRS at this time. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    7. Ignition ON.
    8. Measure:
      Driver Safety Belt Buckle Switch Ground
      G08041299
      G08041300
      C3065 Ground
      Pin Circuit Measurement Pin Circuit
      3 CR201 (GN/BU)
      G08041301
      		 - Ground

    Is any voltage present? 

    1. Yes:
    2. No
      • GO to  9.
  5. CHECK THE DRIVER SEATBELT SENSOR DTC FOR A FAULT STATUS CHANGE (OPEN INDICATED)
    NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the reported fault changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. Disconnect Driver Seat Side Air Bag Module (Inline) C3051.
    4. Disconnect Driver Safety Belt Buckle Switch C3065.
    5. Connect a fused jumper wire:
      Driver Safety Belt Buckle Switch Driver Safety Belt Buckle Switch
      G08041302
      G08041303
      C3065 C3065
      Pin Circuit Measurement Pin Circuit
      3 CR201 (GN/BU)
      G08041304
      		 4 RR137 (BU/GY)
    6. Repower the SRS. Do not  prove out the SRS at this time. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    7. Ignition ON.
    8. Using a scan tool, perform RCM self-test to retrieve DTCs  .
    9. DIAGNOSTIC TIP:  When viewing DTCs  with the driver safety belt buckle switch circuits shorted together, a short to ground fault is normally retrieved. An open circuit fault is also normally retrieved for the driver safety belt buckle pretensioner circuits.

    Did the on-demand DTC change from B0050:13 to B0050:11? 

    1. Yes:
      • REMOVE the fused jumper wire and GO to  8.
    2. No
      • REMOVE the fused jumper wire and GO to 6  .
  6. CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. Disconnect RCM C310A and C310B.
    4. Measure:
      RCM Driver Safety Belt Buckle Switch
      G08041305
      G08041306
      C310B C3065
      Pin Circuit Measurement Pin Circuit
      34 CR201 (GN/BU)
      G08041307
      		 3 CR201 (GN/BU)

    Is the resistance less than 0.5 ohm? 

    1. Yes:
      • GO to 7  .
    2. No
  7. CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH GROUND CIRCUIT FOR AN OPEN
    1. Measure:
      Driver Safety Belt Buckle Switch Ground
      G08041308
      G08041309
      C3065 Ground
      Pin Circuit Measurement Pin Circuit
      4 RR137 (BU/GY)
      G08041310
      		 - Ground

    Is the resistance less than 3 ohms? 

    1. Yes:
      • GO to  9.
    2. No
  8. CONFIRM THE DRIVER SAFETY BELT BUCKLE SWITCH FAULT
    NOTE: Make sure all SRS components and the RCM electrical connectors are connected before carrying out the self-test. If not, DTCs  will be recorded.
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. 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 damaged, pinched, cut or pierced wires.
      • inspect RCM C310A and C310B CPA lever/lock for correct operation. REFER to Restraints Control Module (RCM) .
      • repair any concerns found.

        Refer to OEM CONNECTOR REPAIR PROCEDURES for connector information.

    4. Connect Driver Seat Side Air Bag Module (Inline) C3051 (if previously disconnected).
    5. Connect RCM C310A and C310B (if previously disconnected).
    6. Connect Driver Safety Belt Buckle Switch C3065.
    7. Repower the SRS. Do not  prove out the SRS at this time. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    8. Ignition ON.
    9. Using a scan tool, perform RCM self-test to retrieve DTCs  .

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

    1. Yes:
    2. No
      • In the process of diagnosing the fault, the fault condition has become intermittent. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test  . GO to  10.
  9. CONFIRM THE RCM FAULT
    NOTE: Make sure all SRS components and the RCM electrical connectors are connected before carrying out the self-test. If not, DTCs  will be recorded.
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. 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 damaged, pinched, cut or pierced wires.
      • inspect RCM C310A and C310B CPA lever/lock for correct operation. REFER to Restraints Control Module (RCM) .
      • repair any concerns found.

        Refer to OEM CONNECTOR REPAIR PROCEDURES for connector information.

    4. Connect Driver Seat Side Air Bag Module (Inline) C3051 (if previously disconnected).
    5. Connect RCM C310A and C310B (if previously disconnected).
    6. Connect Driver Safety Belt Buckle Switch C3065.
    7. Repower the SRS. Do not  prove out the SRS at this time. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    8. Ignition ON.
    9. Using a scan tool, perform RCM self-test to retrieve DTCs  .

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

    1. Yes:
      • CHECK OASIS for any applicable TSBs  . If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs  address this concern, INSTALL a new RCM. REFER to Restraints Control Module (RCM) . GO to  11.
    2. No
      • In the process of diagnosing the fault, the fault condition has become intermittent. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test  . GO to 10  .
  10. CHECK FOR AN INTERMITTENT FAULT
    1. Ignition OFF.
    2. Depower the SRS. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    3. Disconnect Driver Safety Belt Buckle Switch C3065.
      • 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.
      • repair any concerns found.

        Refer to OEM CONNECTOR REPAIR PROCEDURES for connector information.

    4. Inspect RCM C310A and C310B CPA lever/lock for correct operation. REFER to Restraints Control Module (RCM) .
    5. Connect all previously disconnected component(s)/connector(s).
    6. Repower the SRS. Do not  prove out the SRS at this time. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    7. Ignition ON.
    8. Using a scan tool, perform RCM self-test to retrieve DTCs  .

    Was DTC B0050:11, B0050:12, B0050:13 or B0050:1D retrieved on-demand during self-test? 

    1. Yes:
      • This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test.
      • For DTC B0050:11 or B0050:1D, GO to  2.
      • For DTC B0050:12, GO to  4.
      • For DTC B0050:13, GO to  5.
    2. No
      • The fault is not present and cannot be recreated at this time. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test  . GO to 11  .
  11. CHECK FOR ADDITIONAL SRS DTCs 
    1. Ignition OFF.
      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.
    2. Reconnect all SRS components (if previously disconnected).
    3. If previously directed to depower the SRS, repower the SRS. Do not  prove out the SRS at this time. REFER to Supplemental Restraint System (SRS) Depowering and Repowering - with Intelligent Access (IA) or REFER to Supplemental Restraint System (SRS) Depowering and Repowering - without Intelligent Access (IA) .
    4. Ignition ON.
    5. Using a scan tool, perform Restraints  self-test to retrieve DTCs  .
      NOTE: When selecting Restraints from the Self Test menu, DTCs  are retrieved from the RCM and OCSM.

    Are any RCM and/or OCSM DTCs retrieved on-demand during self-test? 

    1. Yes:
    2. No
      • CLEAR all RCM and OCSM CMDTCs  . PROVE OUT the SRS. The repair is complete. RETURN the vehicle to the customer.
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