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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 N - Z >> Diagnostic Routine V >> 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.
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: 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  .
      NOTE: Signal cross coupled DTCs  are retrieved only in pairs.

    Were any signal cross coupled DTCs retrieved on-demand during self-test? 

    1. Yes:
      • This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. GO to 2  .
    2. No
      • This is an intermittent fault when present as a CMDTC  only. GO to  4.
  2. CHECK THE AFFECTED DEPLOYABLE CIRCUITS FOR A SIGNAL CROSS COUPLED 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 RCM C310A and C310B.
    4. Disconnect ALL of the affected SRS devices.
      NOTE: Most signal cross coupled faults are due to connector and/or wiring harness damage. Carry out a thorough inspection of connector(s) and/or wiring harness for damage.
    5. Using the following table, measure the resistance between the circuits of the affected SRS components.
      Device/Loop (DTC)  Connector  Circuit 
      Driver air bag module stage 1 (B0001:2B)
      • C216A-1
      • C216A-2
      • CR101 (WH)
      • RR101 (BU)
      Driver air bag module stage 2 (B0002:2B)
      • C216B-1
      • C216B-2
      • CR102 (YE/GN)
      • RR102 (VT/BN)
      Passenger air bag module stage 1 (B0010:2B)
      • C256A-1
      • C256A-2
      • CR103 (GY/BU)
      • RR103 (VT/GN)
      Passenger air bag module stage 2 (B0011:2B)
      • C256B-1
      • C256B-2
      • CR104 (YE/GY)
      • RR104 (WH/BU)
      Driver seat side air bag module (B0020:2B)
      • C3051-1 (Inline)
      • C3051-2 (Inline)
      • CR105 (GN/BU)
      • RR105 (GY/YE)
      LH Safety Canopy® module (B0021:2B)
      • C3321-1
      • C3321-2
      • CR109 (BN/BU)
      • RR109 (BU/GN)
      Passenger seat side air bag module (B0028:2B)
      • C339-1 (Inline)
      • C339-2 (Inline)
      • CR106 (VT/GY)
      • RR106 (YE/OG)
      RH Safety Canopy® module (B0029:2B)
      • C3329-1
      • C3329-2
      • CR111 (BN/WH)
      • RR111 (YE/VT)
      Driver safety belt buckle switch (B0050:2B)
      • C3065-3
      • CR201 (GN/BU)
      Passenger safety belt buckle switch (B0052:2B)
      • C3066-3
      • CR203 (GY/VT)
      Second row left safety belt buckle switch (B0053:2B)
      • C3646-1
      • CR204 (VT)
      Second row right safety belt buckle switch (B0055:2B)
      • C3647-1
      • CR206 (BN)
      Passenger safety belt adaptive load limiter (B0082:2B)
      • C3202-1
      • C3202-2
      • CR147 (GN/OG)
      • RR147 (YE/VT)
      Driver seat track position sensor (B00B5:2B)
      • C356-2
      • VR215 (YE/VT)
      Passenger seat track position sensor (B00C5:2B)
      • C3240-2
      • VR216 (GN/OG)
      Driver safety belt retractor pretensioner (B1211:2B)
      • C323-1
      • C323-2
      • CR120 (BU/OG)
      • RR120 (BN/GN)
      Driver safety belt buckle pretensioner (B1212:2B)
      • C3065-1
      • C3065-2
      • CR120 (BU/OG)/CR170 (GN)
      • RR120 (BN/GN)/RR170 (BN/BU)
      Passenger safety belt buckle pretensioner (B1213:2B)
      • C3066-1
      • C3066-2
      • CR122 (WH/OG)/CR171 (GY)
      • RR122 (BN)/RR171 (VT/GN)
      Passenger safety belt retractor pretensioner (B1214:2B)
      • C303-1
      • C303-2
      • CR122 (WH/OG)
      • RR122 (BN)
      Second row left safety belt inflator (B13B3:2B)
      • C3644-1
      • C3644-2
      • CR123 (GN/VT)
      • RR123 (GY)
      Second row right safety belt inflator (B13B7:2B)
      • C3645-1
      • C3645-2
      • CR125 (BU/BN)
      • RR125 (GN)

    Are the resistances greater than 10, 000 ohms between the affected circuits? 

    1. Yes:
      • GO to 3  .
    2. No
  3. 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. 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.
      • 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.

    2. Connect all previously disconnected restraint system component(s).
    3. Connect RCM C310A and C310B.
    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  .

    Were any signal cross coupled DTCs 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  5.
    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 4  .
  4. CHECK FOR AN INTERMITTENT FAULT
    NOTE: Most cross link faults are due to connector and/or wiring harness damage. Carry out a thorough inspection of connector(s) and/or wiring harness for damage.
    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 ALL of the affected SRS devices.

      Refer to OEM Wiring Diagrams - SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.

    4. Inspect the wiring harness(es) for any type of damage. If damage is found, repair as necessary and

      Refer to OEM CONNECTOR REPAIR PROCEDURES for connector information.

    5. 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) .
    6. Ignition ON.
    7. Using a scan tool, perform RCM self-test to retrieve DTCs  .

    Were any signal cross coupled DTCs 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. GO to  2.
    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 and cycling the ignition frequently. 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 5  .
  5. 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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