Ford Fiesta Quiz
Body and Paint

Pinpoint Test - DTC: L. Diagnosis and Testing

In this manual: Body and Paint
Service Information — 27Suspension — 48Transmission — 9Brake System — 52Steering — 21Engine — 140Manual Transmission, Clutch, Transfer Case and Power Transfer Unit — 48Exhaust System — 6Fuel System — 21Climate Control System — 58Instrumentation and Warning Systems — 26Battery and Charging System — 20Infotainment Systems — 41Lighting — 29Power Distribution — 11Electronic Function Group — 30Body and Paint — 275Frame and Mounting — 3
~11min read

B00B5:11, B00B5:12, B00B5:13 and B00B5:1D


For circuit and connector information, refer to Wiring Diagrams Cell 46.

Normal Operation and Fault Symptoms

The RCM monitors the driver seat position sensor circuits for the following concerns:

  • Open circuit
  • Short to voltage
  • Short to Ground
  • Current out of range
  • Driver seat position sensor is faulty

If a fault is detected, the RCM stores DTC B00B5:11, B00B5:12, B00B5:13 or B00B5:1D in memory and sends a message to the IPC to illuminate the airbag warning indicator.


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B00B5:11 Driver Seat Track Position Sensor: Short to Ground The concern is indicated when the RCM detects a short to ground in the driver seat position sensor circuit.
B00B5:12 Driver Seat Track Position Sensor: Short to Battery The concern is indicated when the RCM detects a short to voltage in the driver seat position sensor circuit.
B00B5:13 Driver Seat Track Position Sensor: Open Circuit The concern is indicated when the RCM detects an open in the circuit of any driver seat position sensor.
B00B5:1D Driver Seat Track Position Sensor: Circuit Current Out of Range The concern is indicated when the RCM detects current in the driver seat position sensor circuit outside the specified range.

Possible Causes

  • Wiring, Terminals or Connectors
  • Driver Seat Position Sensor
  • RCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the driver seat position sensor for damage.
  • Inspect the wiring harness for damage.
  • Inspect the connectors for loose or damaged terminals.

PINPOINT TEST A: B00B5:11, B00B5:12, B00B5:13 AND B00B5:1D
NOTE: Most concerns are related to connector and/or wiring issues. Perform a thorough inspection and check before proceeding to the Pinpoint Test.
NOTE: Only disconnect or reconnect SRS components when instructed to do so in the Pinpoint Test step. Failure to follow this instruction may result in an incorrect SRS diagnosis.
NOTE: Always verify the correct SRS component is installed. Parts released for other vehicles may be incompatible even if they appear physically similar. Check the part number listed in the Ford parts catalog to confirm the correct component is installed. If an incorrect SRS component is installed, diagnostic trouble codes (DTCs) may be set.
NOTE: Before returning the vehicle to the customer, the SRS must be fully functional and operating correctly.
A1 REMOVE RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • WARNING: Before starting any service procedure in this section, refer to the Safety Warnings in Section 100-00 General Information. Failure to follow this instruction may result in serious personal injury.
    REFER TO: Pyrotechnic Device Handling Precautions (100-00 General Information, Description and Operation).
  • The ignition is on.
  • Using the diagnostic scanner, perform the RCM self-test.

Was DTC B00B5:11, B00B5:12, B00B5:13 or B00B5:1D retrieved on demand during the self-test?
Yes This concern cannot be resolved until it is repaired and the DTC is no longer retrieved on demand during the self-test.
If DTC B00B5:11 or B00B5:1D, GO to A2.
For DTC B00B5:12, GO to A4.
For DTC B00B5:13, GO to A5.
No This is an intermittent fault when it is present only as a Continuous Memory Diagnostic Trouble Code (CMDTC). GO to A10.
A2 CHECK the DRIVER SEAT POSITION SENSOR DTC FAILURE MODE (SHORT TO GROUND OR CURRENT OUT OF SPECIFIED RANGE)
  • Ignition OFF. WARNING: Turn the ignition OFF and wait one minute to discharge the backup power supply. Failure to follow this instruction may result in serious injury or death in the event of an accidental deployment.
  • Disconnect: Driver Seat Position Sensor C356.
  • The ignition is on.
  • Using the diagnostic scanner, perform the RCM self-test.
  • DIAGNOSTIC TIP: When viewing diagnostic trouble codes (DTCs) with the driver seat position sensor disconnected, the open circuit fault usually clears.

Did the on-demand DTC change from B00B5:11 or B00B5:1D to B00B5:13?
Yes GO to A8
No For DTC B00B5:11, GO to A3.
For DTC B00B5:1D, GO to A9.
A3 CHECK the DRIVER SEAT POSITION SENSOR CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • De-power the SRS.
    REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: RCM C310A and C310B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C356-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to A9
No REPAIR the circuit.
For wiring diagrams and connector information, refer to Wiring Diagrams, Cell 5.
GO to A11.
A4 CHECK the DRIVER SEAT POSITION SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • De-power the SRS.
    REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: RCM C310A and C310B.
  • Disconnect: Driver Side Airbag C367.
  • Disconnect: Driver Seat Position Sensor C356.
  • Reset the SRS. Do not check the SRS at this time.
    REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C356-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
For wiring diagrams and connector information, refer to Wiring Diagrams, Cell 5.
GO to A11.
No GO to A9
A5 CHECK the DRIVER SEAT POSITION SENSOR DTC FAILURE MODE (INDICATES AN OPEN)
  • Ignition OFF.
  • De-power the SRS.
    REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: Driver Side Airbag C367.
  • Disconnect: Driver Seat Position Sensor C356.
  • Connect a fused jumper wire:
    Click to display connectors
    Lead 1 Measurement/Action Lead 2
    C356-1 C356-2
  • Reset the SRS. Do not check the SRS at this time.
    REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
  • The ignition is on.
  • Using the diagnostic scanner, perform the RCM self-test.
  • DIAGNOSTIC TIP: When viewing diagnostic trouble codes (DTCs) with the driver seat position sensor circuits shorted together, the short to ground usually clears.

Did the on-demand DTC change from B00B5:13 to B00B5:11?
Yes REMOVE the fuse jumper and GO to A8.
No REMOVE the fuse jumper and GO to A6.
A6 CHECK the DRIVER SEAT POSITION SENSOR CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • De-power the SRS.
    REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: RCM C310A and C310B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C310B-58 C356-2

Is the resistance less than 0.5 Ohms?
Yes GO to A7
No REPAIR the circuit.
For wiring diagrams and connector information, refer to Wiring Diagrams, Cell 5.
GO to A11.
A7 CHECK the DRIVER SEAT POSITION SENSOR GROUND CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C356-1 C310B-53

Is the resistance less than 3 ohms?
Yes GO to A9
No REPAIR the circuit.
For wiring diagrams and connector information, refer to Wiring Diagrams, Cell 5.
GO to A11.
A8 CONFIRM THE DRIVER SEAT POSITION SENSOR FAILURE
  • Ignition OFF.
  • De-power the SRS.
    REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Before reconnecting any previously disconnected SRS component:
    • inspect the connector(s) (including any integral connectors) for pushed-out, loose or spread terminals, and loose or chafed wire connections at the terminals.
    • inspect the wiring harness for damage, pinching, or cut or pierced wires.
    • check the RCM C310A and C310B connector position assurance (CPA) lever/latch for proper operation.
    • repair any problems found.
      Refer to Wiring Diagrams Cell 5 for schematic and connector information.
  • Connect: RCM C310A and C310B.
  • Connect: Driver Side Airbag C367.
  • Connect: Driver Seat Position Sensor C356.
  • Reset the SRS. Do not check the SRS at this time.
    REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
  • The ignition is on.
  • Using the diagnostic scanner, perform the RCM self-test.

Was the original DTC retrieved on demand during the self-test?
Yes INSTALL a new driver seat position sensor.
REFER TO: Seat Position Sensor (501-20B Supplemental Restraint System, Removal and Installation).
GO to A11
No During diagnosis, the condition became intermittent. Do not install new SRS components while doing this. Install SRS components only if directed by a pinpoint test. GO to A10
A9 CONFIRM RCM (RESTRAINTS CONTROL MODULE) FAULT
  • Ignition OFF.
  • If not previously directed, disable the SRS.
    Refer to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Before reconnecting any previously disconnected SRS component:
    • inspect the connector(s) (including any integral connectors) for pushed-out, loose or spread terminals, and loose or chafed wire connections at the terminals.
    • inspect the wiring harness for damage, pinching, or cut or pierced wires.
    • check the RCM C310A and C310B connector position assurance (CPA) lever/latch for proper operation.
    • repair any problems found.
      Refer to Wiring Diagrams Cell 5 for schematic and connector information.
  • Connect: RCM C310A and C310B.
  • Connect: Driver Side Airbag C367.
  • Connect: Driver Seat Position Sensor C356.
  • Reset the SRS. Do not check the SRS at this time.
    REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
  • The ignition is on.
  • Using the diagnostic scanner, perform the RCM self-test.

Was the original DTC retrieved on demand during the self-test?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If no TSB applies to this concern, INSTALL a new RCM.
REFER TO: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
GO to A11.
No During diagnosis, the condition became intermittent. Do not install new SRS components while doing this. Install SRS components only if directed by a pinpoint test. GO to A10
A10 CHECK FOR AN INTERMITTENT FAULT
  • Ignition OFF.
  • De-power the SRS.
    REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Disconnect: RCM C310A and C310B.
  • Disconnect: Driver Seat Position Sensor C356.
    • Inspect the connector(s) (including any inline connectors) for corrosion, loose or spread terminals, and loose or worn wire-to-terminal connections.
    • Inspect the wiring harness for damage, pinching, cut or pierced wires.
    • Rectify any concerns found.
      Refer to Wiring Diagrams Cell 05 for schematic and connector information.
    • Inspect the RCM C310A and C310B connector position assurance (CPA) lever/latch for proper operation.
  • Connect: RCM C310A and C310B.
  • Connect: Driver Seat Position Sensor C356.
  • Reset the SRS. Do not check the SRS at this time.
    REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
  • The ignition is on.
  • Using the diagnostic scanner, perform the RCM self-test.

Was DTC B00B5:11, B00B5:12, B00B5:13 or B00B5:1D retrieved on demand during the self-test?
Yes This concern cannot be resolved until it is repaired and the DTC is no longer retrieved on demand during the self-test.
If DTC B00B5:11 or B00B5:1D, GO to A2.
For DTC B00B5:12, GO to A4.
For DTC B00B5:13, GO to A5.
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 by the pinpoint test. GO to A11.
A11 CHECK THE SUPPLEMENTAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • If not previously directed, disable the SRS.
    Refer to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
  • Reconnect all SRS components (if previously disconnected).
  • Reset the SRS. Do not check the SRS at this time.
    REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
  • The ignition is on.
  • NOTE: When Restraints is selected in the Self Test menu, DTCs are retrieved from the RCM and OCSM. Using the diagnostic scanner, perform the Restraints Self Test.

Are any RCM and/or OCSM Diagnostic Trouble Codes (DTCs) retrieved on demand during the self-test?
Yes Do not clear any Diagnostic Trouble Codes (DTCs) until all DTCs have been resolved. DIAGNOSE and REPAIR the RCM and/or OCSM DTCs.
Refer to: Supplemental Restraint System (SRS) (501-20B).
No CLEAR the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules. CONFIRM the SRS. Repair is complete. RETURN the vehicle to the customer.

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