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Home >> Ford Truck >> 2012 >> Explorer FWD L4-2.0L Turbo >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Testing and Inspection >> Pinpoint Tests >> Diagnostic Routine O

Diagnostic Routine O




Diagnostic Routine O

Diagnostic Overview

B0092:11, B0092:93, B0096:11 and B0096:93

Refer to Wiring Diagram Set 46 for schematic and connector information Electrical Diagrams.

The RCM (Restraints Control Module) monitors the passenger front door (first row) and driver C-pillar (second row) side impact sensors and circuits for the following faults:

- Open circuit

- Short to voltage

- Short to ground

- Faulted passenger front door side impact sensor

- Faulted driver C-pillar side impact sensor

If a fault is detected, the RCM (Restraints Control Module) stores DTC (Diagnostic Trouble Code) B0092:11, B0092:93, B0096:11 or B0096:93 in memory and sends a message to the IPC (Instrument Panel Cluster) to illuminate the air bag warning indicator.

The RCM (Restraints Control Module) communicates with each impact sensor. If the RCM (Restraints Control Module) is unable to communicate with the sensor, a DTC (Diagnostic Trouble Code) is stored in memory. A CMDTC (Continuous Memory Diagnostic Trouble Code) no operation (failure type: 93) can be set by a short to voltage on the return circuit of the impact sensor.

NOTE: A short to ground on either impact sensor feed circuit sets DTCs (Diagnostic Trouble Codes) B0091:11 and B0097:11. A short to voltage on either impact sensor feed circuit sets DTCs (Diagnostic Trouble Codes) B0091:93 and B0097:93.

DTC Fault Trigger Conditions






Visual Inspection and Diagnostic Pre-checks

- Inspect for a damaged passenger front door side impact sensor

- Inspect for a damaged driver C-pillar side impact sensor

- Inspect for damaged wiring harness(es)

- Inspect for loose or damaged connectors

Pinpoint Test

WARNING: Do not handle, move or change the original horizontal mounting position of the RCM (Restraints Control Module) while the RCM (Restraints Control Module) is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the Safety Canopy(R) 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 (Supplemental Restraint System) components when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS (Supplemental Restraint System).

NOTE: Always make sure the correct SRS (Supplemental Restraint System) 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 (Supplemental Restraint System) component is installed, DTCs (Diagnostic Trouble Codes) may set.

NOTE: Do not probe any impact sensor. The impact sensor cannot be tested using a multi-meter

NOTE: The SRS (Supplemental Restraint System) must be fully operational and free of faults before releasing the vehicle to the customer.

1. RETRIEVE RCM (Restraints Control Module) DTCs (Diagnostic Trouble Codes)

1. Ignition ON.

2. Using a scan tool, perform RCM (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Were any DTCs (Diagnostic Trouble Codes) retrieved on-demand during self-test?








2. CHECK THE LEFT SIDE RESTRAINTS SENSOR 2 DTC (Diagnostic Trouble Code) FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)

NOTE: This pinpoint test step attempts to change the fault reported by the RCM (Restraints Control Module) by inducing a different fault condition. If the fault reported changes, this indicates the RCM (Restraints Control Module) is functioning correctly and is not the source of the fault.

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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 Driver C-Pillar Side Impact Sensor C3248.

4. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Did the on-demand DTCs (Diagnostic Trouble Codes) change from B0092:11 and B0096:11 to B0092:93?








3. CHECK THE RIGHT SIDE RESTRAINTS SENSOR 1 DTC (Diagnostic Trouble Code) FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)

NOTE: This pinpoint test step attempts to change the fault reported by the RCM (Restraints Control Module) by inducing a different fault condition. If the fault reported changes, this indicates the RCM (Restraints Control Module) is functioning correctly and is not the source of the fault.

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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. Connect Driver C-Pillar Side Impact Sensor C3248.

4. Disconnect Passenger Front Door Side Impact Sensor C644.

5. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Did the on-demand DTC (Diagnostic Trouble Code) change from B0092:11 and B0096:11 to B0096:93?








4. CHECK THE DRIVER C-PILLAR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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 Driver C-Pillar Side Impact Sensor C3248.

4. Disconnect RCM (Restraints Control Module) C310A and C310B.

5. Measure:





6. Measure:





Are the resistances greater than 10,000 ohms?








5. CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS

1. Measure:





2. Measure:





Are the resistances greater than 10,000 ohms?








6. CHECK THE DRIVER C-PILLAR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED)

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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 (Restraints Control Module) C310A and C310B.

4. Disconnect Driver C-Pillar Side Impact Sensor C3248.

5. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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. Measure:





Is any voltage present?








7. CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED)

1. Ignition OFF.

2. Disconnect Passenger Front Door Side Impact Sensor C644.

3. Ignition ON.

4. Measure:





Is any voltage present?








8. CHECK THE DRIVER C-PILLAR SIDE IMPACT SENSOR AND RCM (Restraints Control Module) CONNECTIONS (NO OPERATION INDICATED)

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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. Gain access to the driver C-pillar side impact sensor and inspect C3248 to be fully seated and locked. Seat and lock the connector as necessary. REFER to Side Impact Sensor - Front Door .

4. Gain access to the RCM (Restraints Control Module) and inspect C310A and C310B to be fully seated and locked. Seat and lock the connector(s) as necessary. REFER to Restraints Control Module (RCM) .

5. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Was DTC (Diagnostic Trouble Code) B0092:93 retrieved on-demand during self-test?








9. CHECK THE DRIVER C-PILLAR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED)

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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 (Restraints Control Module) C310A and C310B.

4. Disconnect Driver C-Pillar Side Impact Sensor C3248.

5. Measure:





Are the resistances less than 0.5 ohm?








10. CHECK THE LEFT SIDE RESTRAINTS SENSOR 2 DTC (Diagnostic Trouble Code) FOR A FAULT STATUS CHANGE (NO OPERATION INDICATED)

NOTE: This pinpoint test step will attempt to change the fault reported by the RCM (Restraints Control Module) by inducing a different fault condition. If the fault reported changes, this indicates the RCM (Restraints Control Module) is functioning correctly and is not the source of the fault.

1. Connect RCM (Restraints Control Module) C310A and C310B.

2. Connect a fused jumper wire:





3. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 RCM (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Did the DTC (Diagnostic Trouble Code) change from B0092:93 to B0092:11 and B0096:11?








11. CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR AND RCM (Restraints Control Module) CONNECTIONS (NO OPERATION INDICATED)

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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. Gain access to passenger front door side impact sensor and inspect C644 to be fully seated and locked. Seat and lock the connector as necessary. REFER to Side Impact Sensor - Front Door .

4. Gain access to the RCM (Restraints Control Module) and inspect C310A and C310B to be fully seated and locked. Seat and lock the connector(s) as necessary. REFER to Restraints Control Module (RCM) .

5. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Was DTC (Diagnostic Trouble Code) B0096:93 retrieved on-demand during self-test?








12. CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED)

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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 (Restraints Control Module) C310A and C310B.

4. Disconnect Passenger Front Door Side Impact Sensor C644.

5. Measure:





Are the resistances less than 0.5 ohm?








13. CHECK THE RIGHT SIDE RESTRAINTS SENSOR 1 DTC (Diagnostic Trouble Code) FOR A FAULT STATUS CHANGE (NO OPERATION INDICATED)

NOTE: This pinpoint test step attempts to change the fault reported by the RCM (Restraints Control Module) by inducing a different fault condition. If the fault reported changes, this indicates the RCM (Restraints Control Module) is functioning correctly and is not the source of the fault.

1. Connect RCM (Restraints Control Module) C310A and C310B.

2. Connect a fused jumper wire:





3. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 RCM (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Did the DTC (Diagnostic Trouble Code) change from B0096:93 to B0092:11 and B0096:11?








14. CONFIRM THE RCM (Restraints Control Module) FAULT

NOTE: Make sure all SRS (Supplemental Restraint System) components and the RCM (Restraints Control Module) electrical connectors are connected before carrying out the self-test. If not, DTCs (Diagnostic Trouble Codes) will be recorded.

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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 (Supplemental Restraint System) 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 (Restraints Control Module) C310A and C310B CPA (Connector Position Assurance) lever/lock for correct operation. REFER to Restraints Control Module (RCM) .
- repair any concerns found. Refer to Wiring Diagram Set 5 for schematic and connector information Electrical Diagrams.


4. Connect Driver C-Pillar Side Impact Sensor C3248 (if previously disconnected).

5. Connect Passenger Front Door Side Impact Sensor C644 (if previously disconnected).

6. Connect RCM (Restraints Control Module) C310A and C310B (if previously disconnected).

7. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Was the original DTC (Diagnostic Trouble Code) retrieved on-demand during self-test?








15. CHECK FOR AN INTERMITTENT FAULT

1. Ignition OFF.

2. Depower the SRS (Supplemental Restraint System). 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 the affected sensor(s) (Driver C-Pillar Side Impact Sensor C3248 and/or Passenger Front Door Side Impact Sensor C644).

4. Disconnect RCM (Restraints Control Module) C310A and C310B.

5. Inspect for the following:

- inspect harness and component connectors for 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 (Restraints Control Module) C310A and C310B CPA (Connector Position Assurance) lever/lock for correct operation. REFER to Restraints Control Module (RCM) .
- repair any concerns found. Refer to Wiring Diagram Set 5 for schematic and connector information Electrical Diagrams.


6. Connect the affected sensor(s) (Driver C-Pillar Side Impact Sensor C3248 and/or Passenger Front Door Side Impact Sensor C644).

7. Repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 (Restraints Control Module) self-test to retrieve DTCs (Diagnostic Trouble Codes).

Was DTC (Diagnostic Trouble Code) B0092:11, B0092:93, B0096:11 or B0096:93 retrieved on-demand during self-test?








16. CHECK FOR ADDITIONAL SRS (Supplemental Restraint System) DTCs (Diagnostic Trouble Codes)

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 (Supplemental Restraint System) components (if previously disconnected).

3. If previously directed to depower the SRS (Supplemental Restraint System), repower the SRS (Supplemental Restraint System). Do not prove out the SRS (Supplemental Restraint System) 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 the Restraints self-test to retrieve DTCs (Diagnostic Trouble Codes).

NOTE: When selecting Restraints from the Self Test menu, DTCs (Diagnostic Trouble Codes) are retrieved from the RCM (Restraints Control Module) and OCSM (Occupant Classification System Module).

Are any RCM (Restraints Control Module) and/or OCSM (Occupant Classification System Module) DTCs (Diagnostic Trouble Codes) retrieved on-demand during self-test?







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