Pinpoint Test - DTC: W B1413:11, B1413:81, B1413:93

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Supplemental Restraint System . For schematic and connector Information.

Normal Operation and Fault Conditions

The RCM monitors the LH front impact severity sensor circuits. For the following faults:

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

If a fault is detected, the RCM stores DTC B1413:11, B1413:81 or B1413:93 in memory and sends a message to the IPC to illuminate the airbag warning indicator.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B1413:11	Driver Frontal Restraints Sensor: Circuit Short to Ground	A fault is indicated when the RCM senses a short to ground on the LH front impact severity sensor feed circuit.
B1413:81	Driver Frontal Restraints Sensor: Invalid Serial Data Received	A fault is indicated when the RCM senses a faulted LH front impact severity sensor or an open on the sensor feed or return circuits.
B1413:93	Driver Frontal Restraints Sensor: No Operation	A fault is indicated when the RCM senses a faulted LH front impact severity sensor or a short to voltage on the sensor feed circuit.

Possible Sources

Wiring, terminals or connectors
LH front impact severity sensor
RCM

Visual Inspection and Diagnostic Pre-checks

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

PINPOINT TEST A : B1413:11, B1413:81, B1413:93

WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification be. Fore 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: The SRS must be fully operational and free of faults be. Fore releasing the vehicle to the customer.
NOTE: Do not probe any impact sensor. The impact sensor cannot be tested using a multi-meter

A1 RETRIEVE RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

WARNING: Be. Fore beginning any service procedure in this article, refer to Health and Safety Precautions . Failure to follow this instruction may result in serious personal injury.

Ignition ON.

Using a diagnostic scan tool, per. Form RCM self-test.

Was DTC B1413:11, B1413:81 or B1413:93 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 A2. For DTC B1413:81 or B1413:93, GO to A5

No	This is an intermittent fault when present as a Continuous Memory Diagnostic Trouble Code (CMDTC) only. GO to A10

A2 CHECK THE LEFT FRONTAL RESTRAINTS 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 LH 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, per. Form RCM self-test.
Did the on-demand DTC change from B1413:11 to B1413:81?

Yes INSTALL a new LH front impact severity sensor. REFER to: Front Impact Severity Sensor . GO to A11

No GO to A3

A3 CHECK THE LH (LEFT-HAND) 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 A4

No	REPAIR the circuit. REFER to Connector Repair Procedures . For schematic and connector Information. GO to A11

A4 CHECK. For A SHORT BETWEEN LH (LEFT-HAND) 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 A9

No	REPAIR the circuits. REFER to Connector Repair Procedures . For schematic and connector Information. GO to A11

A5 CHECK THE LH (LEFT-HAND) FRONT IMPACT SEVERITY SENSOR AND RCM (RESTRAINTS CONTROL MODULE) CONNECTIONS (INVALID SERIAL DATA RECEIVED OR NO OPERATION INDICATED)
- Ignition OFF.
- Depower the SRS. REFER to: Supplemental Restraint System (SRS) Depowering .
- Inspect the LH 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 as necessary. REFER to: Restraints Control Module (RCM) .
- 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, per. Form RCM self-test.
Was DTC B1413:81 or B1413:93 retrieved on-demand during self-test?

Yes For DTC B1413:93, GO to A6. For DTC B1413:81, GO to A7

No The fault has been corrected. GO to A11

A6 CHECK THE LH (LEFT-HAND) FRONT IMPACT SEVERITY SENSOR FEED CIRCUIT. For A SHORT TO VOLTAGE (NO OPERATION INDICATED)

Ignition OFF.

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

Disconnect LH 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 Connector Repair Procedures . For schematic and connector Information. GO to A11

GO to A8

A7 CHECK THE LH (LEFT-HAND) FRONT IMPACT SEVERITY SENSOR CIRCUITS. For AN OPEN

Ignition OFF.

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

Disconnect LH Front Impact Severity Sensor C1465 .

Disconnect RCM C310A and C310B .

Measure:

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

Are the resistances less than 0.5 ohm?

Yes

GO to A8

No	REPAIR the circuit(s). REFER to Connector Repair Procedures . For schematic and connector Information. GO to A11

A8 CHECK THE LEFT FRONTAL RESTRAINTS SENSOR DTC (DIAGNOSTIC TROUBLE CODE). For A FAULT STATUS CHANGE (INVALID DATA RECEIVED OR NO OPERATION 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, per. Form RCM self-test.

Did the on-demand DTC change from B1413:81 or B1413:93 to B1413:11?

Yes	REMOVE the fused jumper wire and INSTALL a new LH front impact severity sensor. REFER to: Front Impact Severity Sensor . GO to A11

No	REMOVE the fused jumper wire and GO to A9

A9 CONFIRM THE RCM (RESTRAINTS CONTROL MODULE) FAULT

NOTE: Make sure all SRS components and the RCM electrical connectors are connected be. Fore 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 wire 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 Connector Repair Procedures . For schematic and connector Information.

Connect LH 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, per. Form RCM self-test.

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

Yes	CHECK OASIS. For any applicable Technical Service Bulletins (TSBs). If a TSB exists. For this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new RCM. REFER to: Restraints Control Module (RCM) . GO to A11

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 A10

A10 CHECK. For AN INTERMITTENT FAULT

Ignition OFF.

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

Disconnect LH 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.
- wire 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 Connector Repair Procedures . For schematic and connector Information.

Connect all previously disconnected component(s)/connector(s).

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, per. Form RCM self-test.

Was DTC B1413:11, B1413:81 or B1413:93 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 A2. For DTC B1413:81 or B1413:93, 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 to do so in the pinpoint test. GO to A11

A11 CHECK. For ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition OFF.

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) Repowering .

Ignition ON.

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

Using a diagnostic scan tool, per. Form

Restraints self-test.

Are any RCMOCSM and/or BECMB 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. REFER to: Airbag Supplemental Restraint System (SRS) .

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