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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 Aa - AQ >> Diagnostic Routine AN >> 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 B0053:11, B0053:12, B0053:13 or B0053:1D 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 B0053:11 or B0053:1D, GO to 2  .
      • For DTC B0053:12, GO to  4.
      • For DTC B0053:13, GO to  5.
    2. No
      • This is an intermittent fault when present as a CMDTC  only. GO to  10.
  2. CHECK THE SECOND ROW LEFT 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.
      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. Vehicles equipped with a 40 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Remove 5 screws and the seat track inboard inner and outer covers.
      • Detach the cushion cover front and inboard retainers.
      • Lift the cushion cover and foam pad.
    3. Vehicles equipped with a 60 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Detach the cushion cover retainers and position the cushion cover aside.
    4. Ignition ON.
    5. Using a scan tool, perform RCM self-test to retrieve DTCs  .
    6. DIAGNOSTIC TIP:  When viewing DTCs  with the second row left safety belt buckle switch disconnected, an open circuit fault is normally retrieved.

    Did the on-demand DTC change from B0053:11 or B0053:1D to B0053:13? 

    1. Yes:
      • GO to  8.
    2. No
      • For DTC B0053:11, GO to 3  .
      • For DTC B0053:1D, GO to  9.
  3. CHECK THE SECOND ROW LEFT 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:
      Second Row Left Safety Belt Buckle Switch Ground
      G08041668
      G08041669
      C3646 Ground
      Pin Circuit Measurement Pin Circuit
      1 CR204 (VT)
      G08041670
      		 - Ground

    Is the resistance greater than 10, 000 ohms? 

    1. Yes:
      • GO to  9.
    2. No
  4. CHECK THE SECOND ROW LEFT 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. Vehicles equipped with a 40 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Remove 5 screws and the seat track inboard inner and outer covers.
      • Detach the cushion cover front and inboard retainers.
      • Lift the cushion cover and foam pad.
    4. Vehicles equipped with a 60 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Detach the cushion cover retainers and position the cushion cover aside.
    5. Disconnect RCM C310A and C310B.
    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:
      Second Row Left Safety Belt Buckle Switch Ground
      G08041671
      G08041672
      C3646 Ground
      Pin Circuit Measurement Pin Circuit
      1 CR204 (VT)
      G08041673
      		 - Ground

    Is any voltage present? 

    1. Yes:
    2. No
      • GO to  9.
  5. CHECK THE SECOND ROW LEFT 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.
      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. Vehicles equipped with a 40 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Remove 5 screws and the seat track inboard inner and outer covers.
      • Detach the cushion cover front and inboard retainers.
      • Lift the cushion cover and foam pad.
    3. Vehicles equipped with a 60 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Detach the cushion cover retainers and position the cushion cover aside.
    4. Connect a fused jumper wire:
      Second Row Left Safety Belt Buckle Switch Second Row Left Safety Belt Buckle Switch
      G08041674
      G08041675
      C3646 C3646
      Pin Circuit Measurement Pin Circuit
      1 CR204 (VT)
      G08041676
      		 2 GD233 (BK)
    5. Ignition ON.
    6. Using a scan tool, perform RCM self-test to retrieve DTCs  .
    7. DIAGNOSTIC TIP:  When viewing DTCs  with the second row left safety belt buckle switch circuits shorted together, a short to ground fault is normally retrieved.

    Did the on-demand DTC change from B0053:13 to B0053:11? 

    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 SECOND ROW LEFT 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 Second Row Left Safety Belt Buckle Switch
      G08041677
      G08041678
      C310A C3646
      Pin Circuit Measurement Pin Circuit
      20 CR204 (VT)
      G08041679
      		 1 CR204 (VT)

    Is the resistance less than 0.5 ohm? 

    1. Yes:
      • GO to 7  .
    2. No
  7. CHECK THE SECOND ROW LEFT SAFETY BELT BUCKLE SWITCH GROUND CIRCUIT FOR AN OPEN
    1. Measure:
      Second Row Left Safety Belt Buckle Switch Ground
      G08041680
      G08041681
      C3646 Ground
      Pin Circuit Measurement Pin Circuit
      2 GD233 (BK)
      G08041682
      		 - Ground

    Is the resistance less than 3 ohms? 

    1. Yes:
      • GO to  9.
    2. No
  8. CONFIRM THE SECOND ROW LEFT 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 RCM C310A and C310B (if previously disconnected).
    5. Connect Second Row Left Safety Belt Buckle Switch C3646.
    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 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 Second Row Left Safety Belt Buckle Switch C3646.
    5. Connect RCM C310A and C310B (if previously disconnected).
    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 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. Vehicles equipped with a 40 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Remove 5 screws and the seat track inboard inner and outer covers.
      • Detach the cushion cover front and inboard retainers.
      • Lift the cushion cover and foam pad.
      • 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. Vehicles equipped with a 60 percent second row left seat:  Disconnect Second Row Left Safety Belt Buckle Switch C3646.
      • Detach the cushion cover retainers and position the cushion cover aside.
      • 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.

    5. Inspect RCM CPA lever/lock for correct operation. REFER to Restraints Control Module (RCM) .
    6. Connect all previously disconnected component(s)/connector(s).
    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 DTC B0053:11, B0053:12, B0053:13 or B0053:1D 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 B0053:11 or B0053:1D, GO to  2.
      • For DTC B0053:12, GO to  4.
      • For DTC B0053:13, 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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