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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 562 (Supplemental Restraint System) >> Diagnosis And Testing >> Airbag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test AE: DTCs B00C3:12, B00C3:13 and B00C3:1A >> PINPOINT TEST AE: DTCs B00C3:12, B00C3:13 AND B00C3:1A

PINPOINT TEST AE: DTCs B00C3:12, B00C3:13 AND B00C3:1A

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Never probe the electrical connectors on airbag, Safety Canopy or side air curtain assemblies. Failure to follow this instruction may result in the accidental deployment of these assemblies, which increases the risk of serious personal injury or death.
WARNING: Never disassemble or tamper with seat belt deployable components, including pretensioners, load limiters and inflators. Never back probe deployable device electrical connectors. Tampering or back probing may cause an accidental deployment and result in personal injury or death.
NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
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 Supplemental Restraint System (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 parts catalog to make sure the correct component is being installed. If an incorrect SRS  component is installed, DTCs may set.
NOTE: The OCS  weight sensor bolt(s) are 3 wire sensors and cannot be tested using a multi-meter.
NOTE: The SRS  must be fully operational and free of faults before releasing the vehicle to the customer.
  1. AE1 RETRIEVE OCSM DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - OCSM  .

    Was DTC B00C3:12, B00C3:13 or B00C3:1A 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 AE2  .
    2. No  : This is an intermittent fault when present as a Continuous Memory Diagnostic Trouble Code (CMDTC) only. GO to  AE12.
  2. AE2 CHECK THE SEAT WIRING AND CONNECTORS 
    • 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.
    • Carry out a thorough inspection of the OCS  wiring, terminals and connectors, weight sensor bolt connector and connection, wiring harness routing and the related seat wiring harness and body wiring harness terminals and connectors.

    Were any problems noted? 

    1. Yes  : DEPOWER the SRS  . REFER to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .

      REPAIR the seat connectors and wiring as needed.

      Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to  AE13.

    2. No  : For DTC B00C3:12, GO to AE3  .

      For DTC B00C3:13, GO to  AE5.

      For DTC B00C3:1A, GO to  AE8.

  3. AE3 CHECK THE OCS WEIGHT SENSOR BOLT "D" SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 

    Is any voltage present? 

    1. Yes  : REPAIR circuit VR227 (VT/GN).

      Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to  AE13.

    2. No  : GO to AE4  .
  4. AE4 CHECK THE OCS WEIGHT SENSOR BOLT "D" RETURN CIRCUIT FOR AN OPEN 
    • 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.
    • Measure the resistance between OCS  weight sensor bolt "D" C3331-2  , circuit RR154 (VT/WH), harness side and ground.
      Fig 2: Measuring Resistance Between OCS Weight Sensor Bolt "D" C3331-2, Circuit RR154 (VT/WH) And Ground
      G06063666Courtesy of FORD MOTOR CO.

    Is the resistance less than 3 ohms? 

    1. Yes  : GO to  AE11.
    2. No  : REPAIR circuit RR154 (VT/WH).

      Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to  AE13.

  5. AE5 CHECK THE OCS WEIGHT SENSOR BOLT "D" FOR A FAULT STATUS CHANGE (OPEN INDICATED) 
    NOTE: This pinpoint test step attempts to change the fault reported by the OCSM  by inducing a different fault condition. If the fault reported changes, this indicates the OCSM  is functioning correctly and is not the source of the fault.
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag Module C339.
    • Disconnect: OCS  Weight Sensor Bolt "D" C3331.
    • Connect a fused jumper wire between OCS  weight sensor bolt "D" C3331-3  , circuit VR227 (VT/GN), harness side and C3331-2  , circuit RR154 (VT/WH), harness side.
      Fig 3: Connecting Fused Jumper Wire Between OCS Weight Sensor Bolt "D" C3331-3, Circuit VR227 (VT/GN) And C3331-2, Circuit RR154 (VT/WH)
      G07399541Courtesy of FORD MOTOR CO.
    • Repower the SRS  . Do not  prove out the SRS  at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - OCSM  .
    • DIAGNOSTIC TIP:  When viewing DTCs with the OCS  weight sensor bolt "D" circuits shorted together, a low resistance circuit fault is normally retrieved.

    Did the on-demand DTC change from B00C3:13 to B00C3:1A? 

    1. Yes  : REMOVE the fused jumper wire and INSTALL a new seat track assembly with OCS  weight sensor bolts. REFER to SEATING . GO to  AE13.
    2. No  : REMOVE the fused jumper wire and GO to AE6  .
  6. AE6 CHECK THE OCS WEIGHT SENSOR BOLT "D" SIGNAL CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: OCSM  C3159.
    • Measure the resistance between OCSM C3159-16  , circuit VR227 (VT/GN), harness side, and OCS  weight sensor bolt "D" C3331-3  , circuit VR227 (VT/GN), harness side.
      Fig 4: Measuring Resistance Between OCSM C3159-16, Circuit VR227 (VT/GN) And OCS Weight Sensor Bolt "D" C3331-3, Circuit VR227 (VT/GN)
      G06174105Courtesy of FORD MOTOR CO.

    Is the resistance less than 0.5 ohm? 

    1. Yes  : GO to AE7  .
    2. No  : REPAIR circuit VR227 (VT/GN).

      Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to  AE13.

  7. AE7 CHECK THE OCS WEIGHT SENSOR BOLT "D" VREF CIRCUIT FOR AN OPEN 
    • Measure the resistance between OCS  weight sensor bolt "D" C3331-1  , circuit CR154 (VT/OG), harness side and OCSM C3159-17  , circuit CR154 (VT/OG), harness side.
      Fig 5: Measuring Resistance Between OCS Weight Sensor Bolt "D" C3331-1, Circuit CR154 (VT/OG) And OCSM C3159-17, Circuit CR154 (VT/OG)
      G06063689Courtesy of FORD MOTOR CO.

    Is the resistance less than 3 ohms? 

    1. Yes  : GO to  AE11.
    2. No  : REPAIR circuit CR154 (VT/OG).

      Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to  AE13.

  8. AE8 CHECK THE OCS WEIGHT SENSOR BOLT "D" FOR A FAULT STATUS CHANGE (RESISTANCE BELOW THRESHOLD INDICATED) 
    NOTE: This pinpoint test step attempts to change the fault reported by the OCSM  by inducing a different fault condition. If the fault reported changes, this indicates the OCSM  is functioning correctly and is not the source of the fault.
    • 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.
    • Disconnect: OCS  Weight Sensor Bolt "D" C3331.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - OCSM  .
    • DIAGNOSTIC TIP:  When viewing DTCs with the OCS  weight sensor bolt "D" disconnected, an open circuit fault is normally retrieved.

    Did the on-demand DTC change from B00C3:1A to B00C3:13? 

    1. Yes  : INSTALL a seat track assembly with OCS  weight sensor bolts. REFER to SEATING . GO to  AE13.
    2. No  : GO to AE9  .
  9. AE9 CHECK FOR A SHORT BETWEEN OCS WEIGHT SENSOR BOLT "D" CIRCUITS AND GROUND 
    • 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.
    • Disconnect: OCSM  C3159.
    • Measure the resistance between OCS  weight sensor bolt "D":
      • C3331-3  , circuit VR227 (VT/GN), harness side and ground.
      • C3331-3  , circuit VR227 (VT/GN), harness side and C3331-2  , circuit RR154 (VT/WH), harness side.
        Fig 6: Measuring Resistance Between OCS Weight Sensor Bolt "C" C3331-3, Circuit VR227 (YE/GY) And Ground
        G06063664Courtesy of FORD MOTOR CO.

    Are the resistances greater than 10, 000 ohms? 

    1. Yes  : GO to AE10  .
    2. No  : REPAIR the affected circuits.

      Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to  AE13.

  10. AE10 CHECK FOR A SHORT BETWEEN THE OCS WEIGHT SENSOR BOLT "D" SIGNAL CIRCUITS AND OTHER OCS SENSOR SIGNAL CIRCUITS 
    • Disconnect: OCS  Weight Sensor Bolt "C" C3330.
    • Disconnect: BTS  C3238 (regular cab and Crew Cab)/C829 (Super Cab).
    • Measure the resistance between OCS  weight sensor bolt "C" C3330-3  , circuit VR226 (YE/GY), harness side and OCS  weight sensor bolt "D" C3331-3  , circuit VR227 (VT/GN), harness side.
      Fig 7: Measuring Resistance Between OCS Weight Sensor Bolt "C" C3330-3, Circuit VR226 (YE/GY) And OCS Weight Sensor Bolt "D" C3331-3, Circuit VR227 (VT/GN)
      G07966122Courtesy of FORD MOTOR CO.
    • For regular cab and Crew Cab vehicles: Measure the resistance between OCS  weight sensor bolt "D" C3331-3  , circuit VR226 (YE/GY), harness side and BTS C3238-1  , circuit VR210 (BU/BN), harness side.
      Fig 8: Measuring Resistance Between OCS Weight Sensor Bolt "D" C3331-3, Circuit VR226 (YE/GY) And BTS C3238-1, Circuit VR210 (BU/BN)
      G07966123Courtesy of FORD MOTOR CO.
    • For Super Cab vehicles: Measure the resistance between OCS  weight sensor bolt "D" C3331-3  , circuit VR226 (YE/GY), harness side and BTS C829-1  , circuit VR210 (BU/BN), harness side.
      Fig 9: Measuring Resistance Between OCS Weight Sensor Bolt "D" C3331-3, Circuit VR226 (YE/GY) And BTS C829-1, Circuit VR210 (BU/BN)
      G07966124Courtesy of FORD MOTOR CO.

    Are the resistances greater than 10, 000 ohms? 

    1. Yes  : GO to AE11  .
    2. No  : REPAIR the affected circuits.

      Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to  AE13.

  11. AE11 CONFIRM THE OCSM FAULT 
    NOTE: Make sure all restraint system sensor electrical connectors, OCS  components and the OCSM  electrical connector are all connected before carrying out the self-test. If not, DTCs will be recorded.
    • 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.
    • Prior to reconnecting any previously disconnected SRS  component:
      • inspect connector(s) (including any in-line 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: OCSM  C3159 (if previously disconnected).
    • Connect: OCS  Weight Sensor Bolt "D" C3331.
    • 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 .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - OCSM  .

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

    1. Yes  : INSTALL a new OCSM  . REFER to OCCUPANT CLASSIFICATION SYSTEM MODULE (OCSM) . GO to  AE13.
    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 AE12  .
  12. AE12 CHECK FOR AN INTERMITTENT FAULT 
    • 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.
    • Disconnect: OCS  Weight Sensor Bolt "D" C3331  .
      • inspect connector(s) (including any in-line 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 schematic and connector information.

    • Connect: All Previously Disconnected Component(s)/Connector(s).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - OCSM  .

    Was DTC B00C3:12, B00C3:13 or B00C3:1A 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 B00C3:12, GO to  AE3.

      For DTC B00C3:13, GO to  AE5.

      For DTC B00C3:1A, GO to  AE8.

    2. No  : CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. ACTIVATE other systems in the same wire harness. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test  . Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

      GO to AE13  .

  13. AE13 CHECK FOR ADDITIONAL SRS DTCs 
    • 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.
    • Reconnect all SRS  components (if previously disconnected).
    • 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 .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - Restraints.
      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  : Do not clear any DTCs until all DTCs have been resolved. GO to the DTC CHARTS  for pinpoint test direction.
    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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