Pinpoint Test Pd Event Notification Signal (RCM To Pcm): Fiesta

PD1 : RETRIEVE PCM DTCS

WARNING: Before beginning any service procedure in this service information, refer to Safety Warnings in appropriate GENERAL INFORMATION article. Failure to follow this instruction may result in serious personal injury.

NOTE: Diagnose all network-related (lost communication) DTCs first.

Ignition ON, engine OFF.
Carry out the PCM self-test.
Were any PCM DTCs retrieved on-demand during self-test?

Yes	No
DIAGNOSE and REPAIR the PCM DTCs. REFER to appropriate ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID).	Go to PD2.

PD2 : RETRIEVE RCM DTCS

Ignition ON, engine OFF.
Carry out the RCM self-test.
Was DTC B11D8:12 or B11D8:14 retrieved on-demand during self-test?

Yes	No
This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during the self-test. For DTC B11D8:12, Go to PD5. For DTC B11D8:14, Go to PD3. For all others, No fault found.	This is an intermittent fault when present as a CMDTC only. Go to PD9.

PD3 : CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
RCM_A connector disconnected. (C310A)
RCM_B connector disconnected. (C310B)

Measure the resistance between:

(+) RCM_B (C310B) Connector, Harness Side	(-) PCM Module Connector, Harness Side
ENS_1 - CR115 (BROWN) - Pin 42	ENS_1

Is the resistance less than 3 ohm?

Yes	No
Go to PD4.	REPAIR the circuit. Refer to appropriate CONNECTOR REPAIR PROCEDURES in OEM Wiring Diagrams article, for schematic and connector information. Go to PD10.

PD4 : CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between:

(+) RCM_B (C310B) Connector, Harness Side	(-)
ENS_1 - CR115 (BROWN) - Pin 42	Ground

Is the resistance less than 3 ohm?

Yes	No
CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If not Technical Service Bulletins (TSBs) address this concern INSTALL a new PCM. RCM DTCs and REPEAT the self-test. Go to PD10.	REPAIR the circuit in question Go to PD10.

PD5 : CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT DTC FOR A FAULT STATUS CHANGE

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.
PCM Module connectdor disconnected.
Ignition ON, engien OFF.
Carry out the RCM self-test.
Is DTC B11D8:12 retrieved on-demand during self-test?

Yes	No
Go to PD6.	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 PCM. Go to PD10.

PD6 : CHECK THE EVENT NOTIFICATION SIGNAL CIRCUIT FOR SHORT TO VOLTAGE

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
RCM_A connector disconnected. (C310A)
RCM_B connector disconnected. (C310B)
Repower the SRS. Do not prove out the SRS at this time. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.

Measure the voltage between:

(+) RCM_B (C310B) Connector, Harness Side	(-)
ENS_1 - CR115 (BROWN) - Pin 42	Ground

Is any voltage present?

Yes	No
REPAIR the circuit in question. Go to PD10.	Go to PD7.

PD7 : CONFIRM THE RCM FAULT

NOTE: Make sure all SRS components and the RCM electrical connectors are connected before carrying out the self-test. If not, DTCs are recorded.

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
PCM Module connector disconnected. (if not previously disconnected).
RCM_A connector disconnected. (C310A) (if not previously disconnected).
RCM_B connector disconnected. (C310B) (if not previously disconnected).
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 the RCM electrical connectors and the Connector Position Assurance (CPA) levers/locks for correct operation.
- repair any concerns found. Refer to appropriate CONNECTOR REPAIR PROCEDURES in OEM Wiring Diagrams article, for schematic and connector information.
PCM Module connector connected. (C310A) Make sure it seats and latches correctly.
RCM_A connector connected. (C310A) Make sure it seats and latches correctly.
RCM_B connector connected. (C310B) Make sure it seats and latches correctly.
Repower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.
Carry out the RCM self-test.
Is the original DTC retrieved on-demand during self-test?

Yes	No
Go to PB8.	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 PD9.

PD8 : CONFIRM THE REPAIR
- Ignition OFF.
- CHECK OASIS for any applicable TSBs
  - If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions.
  - If no TSBs address this concern, INSTALL a new RCM. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article
INSTALL a new RCM.

Reconnect all previously disconnected SRS components and repower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.

Carry out the OCSM and RCM self-test and record DTCs if present. Do not clear any DTCs until all DTCs have been resolved. DIAGNOSE and REPAIR the RCM and/or OCSM DTCs.

Carry out the OCSM and RCM self-test and record DTCs if present. Do not clear any DTCs until all DTCs have been resolved.

If any SRS DTCs are retrieved, DO NOT clear any DTCs until all DTCs have been resolved. DIAGNOSE and REPAIR the RCM and/or OCSM DTCs.

If no DTCs are retrieved on-demand, the repair is complete. RETURN the vehicle to the customer.

PD9 : CHECK FOR AN INTERMITTENT FAULT

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
PCM Module connector disconnected. (if not previously disconnected).
RCM_A connector disconnected. (C310A)
RCM_B connector disconnected. (C310B)
Inspect:
- the connector(s) (including any inline connectors) for corrosion, loose or spread terminals and loose or frayed wire connections at terminals.
- the wire harness for any damage, pinched, cut or pierced wires. Repair any concerns found. Refer to appropriate CONNECTOR REPAIR PROCEDURES in OEM Wiring Diagrams article, for schematic and connector information.
- Repair any concerns found. Refer to appropriate CONNECTOR REPAIR PROCEDURES in OEM Wiring Diagrams article, for schematic and connector information.
PCM Module connector connected. Make sure it seats and latches correctly.
RCM_A connector connected. (C310A)
RCM_B connector connected. (C310B)
Repower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.
Carry out the RCM self-test.
Is DTC B11D8:12 or B11D8:14 retrieved on-demand during the self-test?

Yes	No
The fault condition is now present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during the self-test. For DTC B11D8:14, Go to PD3. For DTC B11D8:12, Go to PD5. For all others, No fault found.	CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition frequently. ACTIVATE other systems in the same wire harness. Do not install any new SRS components at this time. Only install SRS components when directed to do so in the pinpoint test. REPAIR any intermittent concerns found. Go to PD10.

PD10 : CHECK FOR ADDITIONAL SRS DTCS

Ignition OFF.
WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follw this instruction may result in serious personal injury or death in the event of an accidental deployment.
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 appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.
Clear the RCM DTCs.
Ignition OFF.
Ignition ON, engine OFF.
Wait 10 seconds.
Carry out the RCM self-test.
If equipped with an OCSM, carry out the OCSM self-test.
Carry out the OCS self-test.
Are any RCM and/or OCSM retrieved on-demand during self-tests?

Yes	No
Do not clear any DTCs until all DTCs have been resolved. DIAGNOSE and REPAIR the RCM and/or OCSM DTCs.	The repair is complete. RETURN the vehicle to the customer.