Pinpoint Test Fa Driver Buckle Sensor

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.

FA1 : CHECK FOR DTC U3003:16 AND U3003:17

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. Refer to Pyrotechnic Device Health and Safety Precautions.

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

Ignition ON, engine OFF.
Carry out the RCM self-test.
s DTC U3003:16 or U3003:17 retrieved DTC during the self-test?

Yes	No
REFER to the DTC/SYMPTOM CHART .	Go to FA2.

FA2 : RETRIEVE RCM DTCS

Ignition ON, engine OFF.
Carry out the RCM self-test.
Is DTC B0050:11, B0050:12, B0050:13 and B0050:1D retrieved as an on-demand (not continuous) DTC during the self-test?

Yes	No
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 FA3. For DTC B0050:12, Go to FA5. For DTC B0050:13, Go to FA6. For all others, No fault found.	This is an intermittent fault when present as a CMDTC only. Go to FA12.

FA3 : CHECK THE DRIVER SEATBELT BUCKLE SWITCH DTC 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.

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Driver Seatbelt Buckle Switch connector disconnected. (C3247)
Repower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.
Carry out the RCM self-test.
NOTE: When viewing DTCs with the driver seatbelt buckle switch disconnected, an open circuit fault is normally retrieved.
Does the on-demand DTC change from B0050:11 or B0050:1D to B0050:13?

Yes	No
Go to FA9.	For DTC B0050:11, Go to FA4. For DTC B0050:1D, Go to FA10. For all others, No fault found.

FA4 : CHECK THE DRIVER SEATBELT BUCKLE SWITCH CIRCUIT FOR A SHORT TO GROUND

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:

(+) Driver Seatbelt Buckle Switch (C3247) Connector, Harness Side	(-)
DRV_SBLT_BCKL_SN_FD - CR201 (GREEN/BLUE) - Pin 5	Ground

Is the resistance greater than 10, 000 ohms?

Yes	No
Go to FA10.	REPAIR the circuit in question. Go to FA13.

FA5 : CHECK THE DRIVER SEATBELT BUCKLE SWITCH CIRCUIT FOR A 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)
Driver Side Airbag (In-line) Assembly connector disconnected.
Driver Seatbelt Buckle Switch connector disconnected. (C3247)
Repower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.

Measure the voltage between:

(+) Driver Seatbelt Buckle Switch (C3247) Connector, Harness Side	(-)
DRV_SBLT_BCKL_SN_FD - CR201 (GREEN/BLUE) - Pin 5	Ground

Is any voltage present?

Yes	No
REPAIR the circuit. Go to FA13.	Go to FA10.

FA6 : CHECK THE DRIVER SEATBELT BUCKLE SWITCH DTC FOR A FAULT STATUS CHANGE (OPEN INDICATED)

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Driver Side Airbag Assembly connector disconnected.
Driver Seatbelt Buckle Switch connector disconnected. (C3247)

Connect a 5 amp fused jumper wire between the following:

Point A Driver Seatbelt Buckle Switch (C3247) Connector, Harness Side	Point B Driver Seatbelt Buckle Switch (C3247) Connector, Harness Side
DRV_SBLT_BCKL_SN_FD - CR201 (GREEN/BLUE) - Pin 5	SNSR_RTN

Repower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.
Carry out the RCM self-test.
NOTE: When viewing DTCs with the driver seatbelt buckle switch circuits shorted together, short to ground fault is normal retrieved.
Does the on-demad DTC change from B0050:13 to B0050:11?

Yes	No
REMOVE the fused jumper wire. Go to FA9.	REMOVE the fused jumper wire. Go to FA7.

FA7 : CHECK THE DRIVER SEATBELT BUCKLE SWITCH 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	(-) Driver Seatbelt Buckle Switch (C3247) Connector, Harness Side
DRV_SBLT_BCKL_SN_FD - CR201 (GREEN/BLUE) - Pin 54	DRV_SBLT_BCKL_SN_FD - CR201 - Pin 5

Is the resistance less than 0.5 ohm?

Yes	No
Go to FA8.	REPAIR the circuit in question. Go to FA13.

FA8 : CHECK THE DRIVER SEATBELT BUCKLE SWITCH GROUND CIRCUIT FOR AN OPEN (TO RCM)

Measure the resistance between:

(+) Driver Seatbelt Buckle Switch (C3247) Connector, Harness Side	(-) RCM_B (C310B) Connector, Harness Side
SNSR_RTN	SNSR_RTN - RR172 - Pin 53

Is the resistance less than 3 ohms?

Yes	No
Go to FA10.	REPAIR the circuit in question. Go to F13.

FA9 : 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, DTCs are set.

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
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.
RCM_A connector connected. (C310A)
RCM_B connector connected. (C310B)
Driver Side Airbag Assembly connector connected. (if previously disconnected).
Driver Seatbelt Buckle Switch connector connected. (C3247) 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
INSTALL a new driver seatbelt buckle (includes buckle switch). REFER to the appropriate SUPPLEMENTAL RESTRAINT SYSTEM article. Go to FA13.	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 FA12.

FA10 : 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.
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.
RCM_A connector connected. (C310A) (if previously disconnected).
RCM_B connector connected. (C310B) (if previously disconnected).
Driver Side Airbag Assembly connector connected. (if previously disconnected)
Driver Seatbelt Buckle Switch connector connected. (C3247)
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 FA11.	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 FA12.

FA11 : 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.

FA12 : CHECK FOR AN INTERMITTENT FAULT

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Driver Seatbelt Buckle Switch connector disconnected. (C3247)
Inspect:
- 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 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.
Connect all previously disconnected component(s)/connector(s).
Repower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Ignition ON, engine OFF.
Carry out the RCM self-test.
Is DTC B0050:11, B0050:12, B0050:13 and B0050:1D 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 self-test. For DTC B0050:11 or B0050:1D, Go to FA3. For DTC B0050:12, Go to FA5. For DTC B0050:13, Go to FA6. For all others, No fault found.	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 FA13.

FA13 : CHECK FOR ADDITIONAL SRS DTCS

Ignition OFF.
Depower the SRS. Refer to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article.
Reconnect all SRS components (if previously disconnected).
Repower the SRS. 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.
If equipped with an OCSM, carry out the OCSM self-test.
Carry out the OCSM self-test.
Are any RCM and/or DTCs retrieved on-demand during self-tests?

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