Pinpoint Test Ah: B1413:11, B1413:12, B1413:13

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

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

Normal Operation and Fault Conditions

REFER to: Airbag and Seatbelt Pretensioner Supplemental Restraint System (SRS) - System Operation and Component Description .

The RCM monitors the driver front impact severity sensor circuits for the following faults:

Open circuit
Short to voltage
Short to ground
Faulted driver front impact severity sensor

If a fault is detected, the RCM stores DTC B1413:11, B1413:12 or B1413:13 in memory and sends a message to the IPC to illuminate the airbag warning indicator.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
RCM B1413:11	Driver Frontal Restraints Sensor: Circuit Short To Ground	A fault is indicated when the RCM senses a short to ground on the driver front impact severity sensor feed circuit.
RCM B1413:12	Driver Frontal Restraints Sensor: Circuit Short To Battery	A fault is indicated when the RCM senses a short to battery on the driver front impact severity sensor feed circuit.
RCM B1413:13	Driver Frontal Restraints Sensor: Circuit Open	A fault is indicated when the RCM senses an open driver front impact severity sensor feed circuit.

Possible Sources

Wiring, terminals or connectors
Driver front impact severity sensor
RCM

Visual Inspection and Pre-checks

Inspect for a damaged driver front impact severity sensor.
Inspect the driver front impact severity sensor mounting and orientation.
Inspect for damaged wiring harness(es).
Inspect for loose or damaged connectors.

WARNING: Do not handle, move or change the original horizontal mounting position of the Restraints Control Module (RCM) while the Restraints Control Module (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: 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 parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, Diagnostic Trouble Codes (DTCs) may set.
NOTE: Do not probe any impact sensor. The impact sensor 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.

AH1 RETRIEVE RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

WARNING: Before beginning any service procedure In this article, refer to Safety warnings in General Information. Failure to follow this instruction may result in serious personal injury.

REFER to: Pyrotechnic Device Health and Safety Precautions .

Ignition ON.

Using a diagnostic scan tool, carry out RCM self-test.

Was DTC B1413:11, B1413:12 or B1413:13 retrieved on-demand during self-test?

Yes	This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test. For DTC B1413:11, GO to AH2 For DTC B1413:12 or B1413:13, GO to AH5

No	This is an intermittent fault when present as a CMDTC only. GO to AH10

AH2 CHECK THE PASSENGER FRONT IMPACT SEVERITY SENSOR 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 by inducing a different fault condition. If the reported fault changes, this indicates the RCM is functioning correctly and is not the source of the fault.
- Ignition OFF.
- Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .
- Disconnect Driver Front Impact Severity Sensor C1465.
- Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering .
- Ignition ON.
- Using a diagnostic scan tool, carry out RCM self-test.
Did the on-demand DTC change from B1413:11 to B1413:13?

Yes INSTALL a new driver front impact severity sensor. REFER to: Front Impact Severity Sensor . GO to AH11

No GO to AH3

AH3 CHECK THE DRIVER FRONT IMPACT SEVERITY SENSOR FEED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

Disconnect RCM C310A and C310B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1465-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to AH4

No	REPAIR the circuit. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to AH11

AH4 CHECK FOR A SHORT BETWEEN DRIVER FRONT IMPACT SEVERITY SENSOR CIRCUITS

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1465-1	Courtesy of FORD MOTOR COMPANY	C1465-2

Is the resistance greater than 10, 000 ohms?

Yes

GO to AH9

No	REPAIR the circuits. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to AH11

AH5 CHECK THE DRIVER FRONT IMPACT SEVERITY SENSOR AND RCM (RESTRAINTS CONTROL MODULE) CONNECTIONS (CIRCUIT SHORT TO BATTERY OR CIRCUIT OPEN INDICATED)
- Ignition OFF.
- Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .
- Inspect the Driver Front Impact Severity Sensor electrical connector C1465 to make sure it is fully seated and locked. Seat and lock the connector as necessary.
- Gain access to the RCM and inspect C310A and C310B to make sure they are fully seated and locked. Seat and lock the connector(s) as necessary.
- Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering .
- Ignition ON.
- Using a diagnostic scan tool, carry out RCM self-test.
Was DTC B1413:12 or B1413:13 retrieved on-demand during self-test?

Yes For DTC B1413:12, GO to AH6 For DTC B1413:13, GO to AH7

No The fault has been corrected. GO to AH11

AH6 CHECK THE DRIVER FRONT IMPACT SEVERITY SENSOR FEED CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

Disconnect Driver Front Impact Severity Sensor C1465.

Disconnect RCM C310A and C310B.

Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1465-1	Courtesy of FORD MOTOR COMPANY	Ground
C1465-2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to AH11

GO to AH8

AH7 CHECK THE DRIVER FRONT IMPACT SEVERITY SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

Disconnect Driver Front Impact Severity Sensor C1465.

Disconnect RCM C310A and C310B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C310A-18	Courtesy of FORD MOTOR COMPANY	C1465-1
C310A-17	Courtesy of FORD MOTOR COMPANY	C1465-2

Are the resistances less than 0.5 ohm?

Yes

GO to AH8

No	REPAIR the circuit(s). Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to AH11

AH8 CHECK THE PASSENGER FRONT IMPACT SEVERITY SENSOR DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (CIRCUIT SHORT TO BATTERY OR OPEN INDICATED)

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

Ignition OFF.

If not already directed to do so, depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

Connect RCM C310A and C310B.

Connect a fused jumper wire as shown:

Lead 1	Measurement / Action	Lead 2
C1465-1	Courtesy of FORD MOTOR COMPANY	C1465-2

Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering .

Ignition ON.

Using a diagnostic scan tool, carry out RCM self-test.

Did the on-demand DTC change from B1413:12 or B1413:13 to B1413:11?

Yes	REMOVE the fused jumper wire and INSTALL a new driver front impact severity sensor. REFER to: Front Impact Severity Sensor . GO to AH11

No	REMOVE the fused jumper wire and GO to AH9

AH9 CONFIRM THE RCM (RESTRAINTS CONTROL MODULE) FAULT

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

Ignition OFF.

Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

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 wiring harness for any damaged, pinched, cut or pierced wires.
- inspect RCM C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
- repair any concerns found. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

Connect Driver Front Impact Severity Sensor C1465.

Connect RCM C310A and C310B.

Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering .

Ignition ON.

Using a diagnostic scan tool, carry out RCM self-test.

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

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RCM. REFER to: Restraints Control Module (RCM) . GO to AH11

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 AH10

AH10 CHECK FOR AN INTERMITTENT FAULT

Ignition OFF.

Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .

Disconnect Driver Front Impact Severity Sensor C1465.

Disconnect RCM C310A and C310B.

Inspect:
- harness and component connectors for loose or spread terminals and loose or frayed wire connections at terminals.
- wiring harness for any damage, pinched, cut or pierced wires.
- RCM C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
- repair any concerns found. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

Connect all previously disconnected components and connectors.

Repower the SRS. Do not prove out the SRS at this time. REFER to: Supplemental Restraint System (SRS) Repowering .

Ignition ON.

Using a diagnostic scan tool, carry out RCM self-test.

Was DTC B1413:11, B1413:12 or B1413:13 retrieved on-demand during the self-test?

Yes	This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test. For DTC B1413:11, GO to AH2 For DTC B1413:12 or B1413:13, GO to AH5

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 to do so in the pinpoint test. GO to AH11

AH11 CHECK FOR ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition OFF.

Connect all previously disconnected components and connectors.

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) Repowering .

Ignition ON.

NOTE: When selecting Restraints from the Self Test menu, DTCs are retrieved from the RCM and OCSM.

Using a diagnostic scan tool, perform

Restraints self-test.

Are any RCM or OCSM Diagnostic Trouble Codes (DTCs) retrieved on-demand during self-test?

Yes	Do not clear any Diagnostic Trouble Codes (DTCs) until all Diagnostic Trouble Codes (DTCs) have been resolved. DIAGNOSE and REPAIR the SRS Diagnostic Trouble Codes (DTCs). REFER to the DTC Chart In this article.

No	The repair is complete. RETURN the vehicle to the customer.