501-20B Supplemental Restraint System	2014 Fiesta
Diagnosis and Testing	Procedure revision date: 05/6/2013

Pinpoint Test - DTC: U

B1414:11, B1414:93, B1419:11, B1419:93

Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Conditions

The RCM monitors the driver front door and RH C-pillar side impact sensors and circuits for the following faults:

Open circuit
Short to voltage
Short to ground
Faulted driver front door side impact sensor
Faulted RH C-pillar side impact sensor

NOTE: A short to ground on either impact sensor feed circuit sets Diagnostic Trouble Codes (DTCs) B1414:11 and B1419:11. A short to voltage on either impact sensor feed or return circuit sets Diagnostic Trouble Codes (DTCs) B1414:93 and B1419:93.

If a fault is detected, the RCM stores DTC B1414:11, B1414:93, B1419:11 or B1419:93 in memory and sends a message to the IPC to illuminate the airbag warning indicator.

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B1414:11	Driver Side Restraints Sensor 1: Circuit Short to Ground	A fault is indicated when the RCM senses a shorted driver front door side impact sensor, a shorted second row RH side impact sensor, a short to ground on the driver front door side impact sensor feed circuit or a short to ground on the second row RH side impact sensor feed circuit.
B1414:93	Driver Side Restraints Sensor 1: No Operation	A fault is indicated when the RCM senses a faulted driver front door side impact sensor, a short to voltage on the feed or return circuit of the driver front door side impact sensor, a short to voltage on the feed or return circuit of second row RH side impact sensor or an open feed or return circuit of the driver front door side impact sensor.
B1419:11	Passenger Side Restraints Sensor 2: Circuit Short to Ground	A fault is indicated when the RCM senses a shorted driver front door side impact sensor, a shorted second row RH side impact sensor, a short to ground on the driver front door side impact sensor feed circuit or a short to ground on the second row RH side impact sensor feed circuit.
B1419:93	Passenger Side Restraints Sensor 2: No Operation	A fault is indicated when the RCM senses a faulted second row RH side impact sensor, a short to voltage on the feed or return circuit of second row RH side impact sensor, a short to voltage on the feed or return circuit of the driver front door side impact sensor or an open feed or return circuit of the second row RH side impact sensor.

Possible Causes

Wiring, terminals or connectors
Driver front door side impact sensor
RH C-pillar side impact sensor
RCM

Visual Inspection and Diagnostic Pre-checks

Inspect for damaged wiring harness(es).

PINPOINT TEST A : B1414:11, B1414:93, B1419:11, B1419:93

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: The SRS must be fully operational and free of faults before 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: Before beginning any service procedure in this section, refer to Safety Warnings in section 100-00 General Information. Failure to follow this instruction may result in serious personal injury.

REFER to: Safety Belt and Supplemental Restraint System (SRS) Health and Safety Precautions (100-00 General Information, Description and Operation).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

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

Yes

The fault(s) cannot be cleared until corrected and the Diagnostic Trouble Codes (DTCs) are no longer retrieved on-demand during self-test.
For B1414:11 AND B1419:11, GO to A2
For B1414:93 AND B1419:93, GO to A6
For B1414:93 ONLY , GO to A8
For B1419:93 ONLY , GO to A11
For any other Diagnostic Trouble Codes (DTCs),
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

No	The fault is intermittent when present as a Continuous Memory Diagnostic Trouble Code (CMDTC) only. GO to A15

A2 CHECK THE DRIVER 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 by inducing a different fault condition. If the fault reported 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 and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Front Door Side Impact Sensor C567.

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

Did the on-demand Diagnostic Trouble Codes (DTCs) change from B1414:11 and B1419:11 to B1414:93?

Yes

INSTALL a new driver front door side impact sensor.
REFER to: Front Door Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).
GO to A16

GO to A3

A3 CHECK THE PASSENGER SIDE RESTRAINTS SENSOR 2 DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Connect: Driver Front Door Side Impact Sensor C567.

Disconnect: RH C-Pillar Side Impact Sensor C3211.

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

Did the on-demand DTC change from B1414:11 and B1419:11 to B1419:93?

Yes

INSTALL a new C-pillar side impact sensor.
REFER to: C-Pillar Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).
GO to A16

GO to A4

A4 CHECK THE DRIVER FRONT DOOR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Front Door Side Impact Sensor C567.

Disconnect: RCM C310A and C310B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C567-1		C567-2

Measure:

Positive Lead	Measurement / Action	Negative Lead
C567-1		Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to A5

No	REPAIR the affected circuit(s). Refer to Wiring Diagrams Cell 5 for schematic and connector information. GO to A16

A5 CHECK THE RH (RIGHT-HAND) C-PILLAR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3211-1		C3211-2

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3211-1		Ground

Are the resistances greater than 10,000 ohms?

Yes

GO to A14

No	REPAIR the affected circuit(s). Refer to Wiring Diagrams Cell 5 for schematic and connector information. GO to A16

A6 CHECK THE DRIVER FRONT DOOR SIDE IMPACT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED)

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: Driver Front Door Side Impact Sensor C567.

Disconnect: RCM C310A and C310B.

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C567-1		Ground
C567-2		Ground

Is any voltage present?

Yes

REPAIR the affected circuits.
Refer to Wiring Diagrams Cell 5 for schematic and connector information.
GO to A16

GO to A7

A7 CHECK THE RH (RIGHT-HAND) C-PILLAR SIDE IMPACT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED)

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: RH C-Pillar Side Impact Sensor C3211.

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3211-1		Ground
C3211-2		Ground

Is any voltage present?

Yes

REPAIR the affected circuits.
Refer to Wiring Diagrams Cell 5 for schematic and connector information.
GO to A16

GO to A14

A8 CHECK THE DRIVER FRONT DOOR SIDE IMPACT SENSOR AND RCM (RESTRAINTS CONTROL MODULE) CONNECTIONS (NO OPERATION INDICATED)

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Gain access to the driver front door side impact sensor and inspect C567 to make sure it is fully seated and locked. Seat and lock the connector as necessary.
REFER to: Front Door Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).

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.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

Was DTC B1414:93 retrieved on-demand during self-test?

Yes

GO to A9

No	The fault is corrected. GO to A16

A9 CHECK THE DRIVER FRONT DOOR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED)

Ignition OFF.

Depower the SRS
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: RCM C310A and C310B.

Disconnect: Driver Front Door Side Impact Sensor C567.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C310B-44		C567-1
C310B-43		C567-2

Are the resistances less than 0.5 ohm?

Yes

GO to A10

No	REPAIR the affected circuit. Refer to Wiring Diagrams Cell 5 for schematic and connector information. GO to A16

A10 CHECK THE DRIVER SIDE RESTRAINTS SENSOR 1 DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (NO OPERATION INDICATED)

Connect: RCM C310A and C310B.

Connect a fused jumper wire:

Lead 1	Measurement / Action	Lead 2
C567-1		C567-2

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

Did the DTC change from B1414:93 to B1414:11 and B1419:11?

Yes

REMOVE the fused jumper wire and INSTALL a new driver front door side impact sensor.
REFER to: Front Door Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).
GO to A16

No	REMOVE the fused jumper wire and GO to A14

A11 CHECK THE RH (RIGHT-HAND) C-PILLAR SIDE IMPACT SENSOR AND RCM (RESTRAINTS CONTROL MODULE) CONNECTIONS (NO OPERATION INDICATED)

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Gain access to the RH C-pillar side impact sensor and inspect C3211 to be fully seated and locked. Seat and lock the connector as necessary.
REFER to: C-Pillar Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).

Gain access to the RCM 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) (501-20B Supplemental Restraint System, Removal and Installation).

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

Was DTC B1419:93 retrieved on-demand during self-test?

Yes

GO to A12

No	The fault is corrected. GO to A16

A12 CHECK THE RH (RIGHT-HAND) C-PILLAR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED)

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: RCM C310A and C310B.

Disconnect: RH C-Pillar Side Impact Sensor C3211.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C310B-32		C3211-1
C310B-31		C3211-2

Are the resistances less than 0.5 ohm?

Yes

GO to A13

No	REPAIR the affected circuit. Refer to Wiring Diagrams Cell 5 for schematic and connector information. GO to A16

A13 CHECK THE PASSENGER SIDE RESTRAINTS SENSOR 2 DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (NO OPERATION INDICATED)

Connect: RCM C310A and C310B.

Connect a fused jumper wire:

Lead 1	Measurement / Action	Lead 2
C3211-1		C3211-2

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

Did the DTC change from B1419:93 to B1419:11 and B1414:11?

Yes

REMOVE the fused jumper wire and INSTALL a new C-pillar side impact sensor.
REFER to: C-Pillar Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).
GO to A16

No	REMOVE the fused jumper wire and GO to A14

A14 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 and Repowering (501-20B Supplemental Restraint System, General Procedures).

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 damage, 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 Cell 5 for schematic and connector information.

Connect: RH C-Pillar Side Impact Sensor C3211 (if previously disconnected).

Connect: Driver Front Door Side Impact Sensor C567 (if previously disconnected).

Connect: RCM C310A and C310B.

Repower the SRS . Do not prove out the SRS at this time.

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

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

Yes

CHECK for any applicable Technical Service Bulletins (TSBs). If a exists for this concern, DISCONTINUE this test and FOLLOW instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new .
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
GO to A16

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 A15

A15 CHECK FOR AN INTERMITTENT FAULT

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: RH C-Pillar Side Impact Sensor C3211.

Disconnect: Driver Front Door Side Impact Sensor C567.

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 Wiring Diagrams Cell 5 for schematic and connector information.

Connect: RH C-Pillar Side Impact Sensor C3211.

Connect: Driver Front Door Side Impact Sensor C567.

Connect: RCM C310A and C310B.

Repower the SRS . Do not prove out the SRS at this time.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Using a diagnostic scan tool, perform RCM self-test.

Was DTC B1414:11, B1414:93, B1419:11 or B1419:93 retrieved on-demand during self-test?

Yes

The fault(s) cannot be cleared until corrected and the is no longer retrieved on-demand during self-test.
For B1414:11 AND B1419:11, GO to A2
For B1414:93 AND B1419:93, GO to A6
For B1414:93 ONLY , GO to A8
For B1419:93 ONLY , GO to A11

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 A16

A16 CHECK FOR ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

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.

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) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).

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 and/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 and/or Diagnostic Trouble Codes (DTCs).
REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

No	CLEAR all RCM and OCSM Continuous Memory Diagnostic Trouble Codes (CMDTCs). PROVE OUT the SRS . The repair is complete. RETURN the vehicle to the customer.