LEMON Manuals: Even more car manuals for everyone
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 Y >> 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.
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: Install new components only when directed to do so in the pinpoint test.
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 ALL CMDTCs  IN ALL MODULES
    1. Ignition ON.
    2. Using a scan tool, retrieve ALL CMDTCs  .

    Is DTC B1317, B1318, B1676, U3003:16 or U3003:17 present in one or more modules AND are any charging system DTCs present in the PCM? 

    1. Yes:
    2. No
      • GO to 2  .
  2. TEST BATTERY CONDITION
    1. Ignition OFF.
    2. Carry out the Battery Condition Test. REFER to DIAGNOSTIC ROUTINE A : Battery Condition Test.

    Did the battery pass the condition test? 

    1. Yes:
      • If the battery passed the condition test but required a recharge, REFER to DIAGNOSTIC ROUTINE B : System Voltage Low or Battery is Discharged to diagnose the charging system. CLEAR all CMDTCs  .
      • If the battery passed the condition test and did not require a recharge, GO to 3  .
    2. No
  3. CHECK THE CHARGING SYSTEM VOLTAGE
    NOTE: Do not allow the engine speed to increase above 2, 000 RPM while performing this step or the generator may self-excite and result in default charging system output voltage. If engine speed goes above 2, 000 RPM, turn the vehicle off and restart the engine before performing this step.
    1. Measure the voltage of the battery:
    2. For DTC U3003:17, turn off all accessories and run the engine at 1, 500 RPM for a minimum of 2 minutes while measuring the battery voltage.
    3. For DTC U3003:16, turn on headlights and HVAC fan on high and run engine at 1, 500 RPM for a minimum of 2 minutes while measuring the battery voltage.

    Is the voltage between 13 and 15.2 volts? 

    1. Yes:
      • For DTC U3003:16, GO to 4  .
      • For DTC U3003:17, GO to  6.
    2. No
  4. CHECK FOR OPEN IGNITION CIRCUIT TO THE MODULE
    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 OCSM C3159.
    4. Disconnect RCM C310A and C310B.
    5. For the RCM, measure:
      RCM BCM
      G08041534
      G08041535
      C310A Fuse 37 (10A)
      Pin Circuit Measurement / Action Pin Circuit
      13 CBP37 (WH)
      G08041536
      		 Fuse 37 (10A) CBP37 (WH)
    6. For the OCSM, measure:
      OCSM BCM
      G08041537
      G08041538
      C3159 Fuse 33 (10A)
      Pin Circuit Measurement / Action Pin Circuit
      1 CBX02 (BN/RD)
      G08041539
      		 Fuse 33 (10A) CBP33 (WH/BN)

    Is the resistance less than 1 ohm? 

    1. Yes:
      • GO to 5  .
    2. No
  5. CHECK FOR OPEN GROUND TO THE MODULE
    1. For the RCM, measure:
      RCM Ground
      G08041540
      G08041541
      RCM Case Ground
      Pin Circuit Measurement / Action Pin Circuit
      - -
      G08041542
      		 - Ground
    2. For the OCSM, measure:
      OCSM Ground
      G08041543
      G08041544
      C3159 Ground
      Pin Circuit Measurement / Action Pin Circuit
      4 GD901 (BK)
      G08041545
      		 - Ground

    Is the resistance less than 1 ohm? 

    1. Yes:
      • GO to 6  .
    2. No
      • For the RCM, VERIFY there is no corrosion between the RCM case and mounting. VERIFY the fasteners are clean and tightened to specification with no corrosion. REPAIR as necessary.
      • Refer to OEM CONNECTOR REPAIR PROCEDURES for connector information.
      • For the OCSM, REPAIR the circuit.
      • Refer to OEM CONNECTOR REPAIR PROCEDURES for connector information.
      • CLEAR all CMDTCs  .
  6. CHECK FOR MODULE OPERATION
    1. 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) .
    2. Disconnect the module with the concern:
      • For the RCM, disconnect C310A and C310B.
      • For the OCSM, disconnect C3159.
    3. Check for the following:
      • corrosion
      • damaged pins
      • pushed-out pins
    4. Connect the RCM C310A and C310B or OCSM C3159 and make sure the connector seats correctly and engage CPA lever/lock.
    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. Operate the system and verify the concern is still present.

    Is the concern still present? 

    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, and DTC U3003:16 or U3003:17 was present in the RCM, INSTALL a new RCM. REFER to REFER to Restraints Control Module (RCM) .
      • If no TSBs  address this concern, and DTC U3003:16 or U3003:17 was present in the OCSM, INSTALL a new OCSM. REFER to Occupant Classification System (OCS) Sensor .
    2. No
      • The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR all CMDTCs  .
scientia non olet · About LEMON Manuals