Pinpoint Test As: U0146:00

Normal Operation and Fault Conditions

The RCM uses information contained in messages from the GWM sent on the HS-CAN2.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
RCM U0146:00	Lost Communication With Serial Data Gateway 'A': No Sub Type Information	This DTC sets if the RCM does not receive an expected message from the GWM.

Possible Sources

Network traffic
GWM
RCM

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: SRS components should only be disconnected or reconnected 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.

AS1 CHECK THE COMMUNICATION NETWORK

WARNING: Before beginning any service procedure, refer to Safety Warnings in General Information. Failure to follow this instruction may result in serious personal injury.

REFER to: Pyrotechnic Device Health and Safety Precautions .
- Ignition ON.
- Using a diagnostic scan tool, carry out a network test.
Does the GWM pass the network test?

Yes GO to AS2

No To diagnose no communication with the GWM, REFER to: Controller Area Network (CAN) Module Communications Network .

AS2 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

Ignition ON.

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

Using a diagnostic scan tool, clear RCM Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

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

Is DTC U0140:00 retrieved again?

Yes

GO to AS3

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AS3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE RCM (RESTRAINTS CONTROL MODULE) SELF-TEST
- Check the recorded Diagnostic Trouble Codes (DTCs) from the RCM self-test.
Is DTC U3003:16 or U3003:17 recorded?

Yes GO to Pinpoint Test BA

No GO to AS4

AS4 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE GWM (GATEWAY MODULE A) SELF-TEST
- Using a diagnostic scan tool, perform GWM self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the GWM self-test.
Is DTC U3003:16 or U3003:17 recorded?

Yes REFER to: Controller Area Network (CAN) Module Communications Network .

No GO to AS5

AS5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0146:00 SET IN OTHER MODULES

Ignition ON.

Using a diagnostic scan tool, perform self-test for all modules.

Is DTC U0140:00 set in the ABS Module or in the IPC '

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. 419-10 BCM

No	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RCM. REFER to: Restraints Control Module (RCM) .