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:
The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
|
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: Pyrotechnic Device Health and Safety Precautions (100-00 General Information, Description and Operation).
-
Using a diagnostic scan tool, perform RCM self-test.
Was DTC B0050:11, B0050:12, B0050:13 or B0050:1D 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 B0050:11 or B0050:1D, GO to A2
For DTC B0050:12, GO to A4
For DTC B0050:13, GO to A5
|
No |
This is an intermittent fault when present as a CMDTC only. GO to A10
|
|
A2 CHECK THE DRIVER SEATBELT SENSOR DTC (DIAGNOSTIC TROUBLE CODE)
FOR A FAULT STATUS CHANGE (SHORT TO GROUND OR CURRENT OUT OF RANGE 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.
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).
-
Disconnect Driver Seatbelt Buckle C3201
.
-
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).
-
Using a diagnostic scan tool, perform RCM self-test.
-
DIAGNOSTIC TIP: When viewing Diagnostic
Trouble Codes (DTCs) with the driver seatbelt buckle switch
disconnected, an open circuit fault is normally retrieved.
Did the on-demand DTC change from B0050:11 or B0050:1D to B0050:13?
No |
For DTC B0050:11, GO to A3
For DTC B0050:1D, GO to A9
|
|
A3 CHECK THE DRIVER SEATBELT BUCKLE SWITCH CIRCUIT FOR A SHORT TO GROUND |
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).
-
Disconnect
RCM
C310A and C310B
.
-
Measure:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C3201-5
|
|
Ground
|
Is the resistance greater than 10,000 ohms?
No |
REPAIR the circuit. Refer to Wiring Diagrams Cell 5 for schematic and connector information.
GO to A11
|
|
A4 CHECK THE DRIVER SEATBELT BUCKLE SWITCH CIRCUIT FOR A SHORT TO VOLTAGE |
-
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 Side Airbag (Inline) C3368
.
-
Disconnect Driver Seatbelt Buckle C3201
.
-
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).
-
Measure:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C3201-5
|
|
Ground
|
Is any voltage present?
Yes |
REPAIR the circuit. Refer to Wiring Diagrams Cell 5 for schematic and connector information.
GO to A11
|
|
A5 CHECK THE DRIVER SEATBELT SENSOR DTC (DIAGNOSTIC TROUBLE CODE)
FOR A FAULT STATUS CHANGE (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.
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).
-
Disconnect Driver Side Airbag (Inline) C3368
.
-
Disconnect Driver Seatbelt Buckle C3201
.
-
Connect a fused jumper wire:
Click to display connectors
Lead 1
|
Measurement / Action
|
Lead 2
|
C3201-5
|
|
C3201-6
|
-
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).
-
Using a diagnostic scan tool, perform RCM self-test.
-
DIAGNOSTIC TIP: When viewing Diagnostic
Trouble Codes (DTCs) with the driver seatbelt buckle switch circuits
shorted together, a short to ground fault is normally retrieved.
Did the on-demand DTC change from B0050:13 to B0050:11?
Yes |
REMOVE the fused jumper wire and GO to A8
|
No |
REMOVE the fused jumper wire and GO to A6
|
|
A6 CHECK THE DRIVER SEATBELT BUCKLE SWITCH CIRCUIT FOR AN OPEN |
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).
-
Disconnect
RCM
C310A and C310B
.
-
Measure:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C310B-54
|
|
C3201-5
|
Is the resistance less than 0.5 ohm?
No |
REPAIR the circuit. Refer to Wiring Diagrams Cell 5 for schematic and connector information.
GO to A11
|
|
A7 CHECK THE DRIVER SEATBELT BUCKLE SWITCH GROUND CIRCUIT FOR AN OPEN |
-
Measure:
Click to display connectors
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C3201-6
|
|
C310B-53
|
Is the resistance less than 3 ohms?
No |
REPAIR the circuit. Refer to Wiring Diagrams Cell 5 for schematic and connector information.
GO to A11
|
|
A8 CONFIRM THE DRIVER SEATBELT BUCKLE SWITCH 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.
-
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 damaged, pinched, cut or pierced wires.
-
inspect RCM
C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
-
repair any concerns found.
Refer to Wiring Diagrams Cell 5 for schematic and connector information.
-
Connect
RCM
C310A and C310B
.
-
Connect Driver Side Airbag (Inline) C3368
.
-
Connect Driver Seatbelt Buckle C3201
.
-
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).
-
Using a diagnostic scan tool, perform RCM self-test.
Was the original DTC retrieved on-demand during self-test?
Yes |
INSTALL a new driver seatbelt buckle. REFER to: Front Seatbelt Buckle (501-20A Seatbelt Systems, Removal and Installation).
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
|
|
A9 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.
-
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 damaged, pinched, cut or pierced wires.
-
inspect RCM
C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
-
repair any concerns found.
Refer to Wiring Diagrams Cell 5 for schematic and connector information.
-
Connect
RCM
C310A and C310B
.
-
Connect Driver Side Airbag (Inline) C3368
.
-
Connect Driver Seatbelt Buckle C3201
.
-
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).
-
Using a diagnostic scan tool, perform 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) (501-20B Supplemental Restraint System, Removal and Installation).
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 |
-
Depower the SRS.
REFER to: Supplemental Restraint System (SRS) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).
-
Disconnect Driver Seatbelt Buckle C3201
.
-
Inspect connector(s) (including any inline
connectors) for corrosion, loose or spread terminals and loose or frayed
wire connections at terminals.
-
Inspect wire harness for any damage, pinched, cut or pierced wires.
-
Repair any concerns found.
Refer to Wiring Diagrams Cell 5 for schematic and connector information.
-
Inspect RCM
C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
-
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) Depowering and Repowering (501-20B Supplemental Restraint System, General Procedures).
-
Using a diagnostic scan tool, perform RCM self-test.
Was DTC B0050:11, B0050:12, B0050:13 or B0050:1D 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 B0050:11 or B0050:1D, GO to A2
For DTC B0050:12, GO to A4
For DTC B0050:13, 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) |
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.
-
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).
-
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, perform Restraints self-test.
Are any RCM, OCSM 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) (501-20B Supplemental Restraint System, Diagnosis and Testing).
|
No |
The repair is complete. RETURN the vehicle to the customer.
|
|