Pinpoint Test M: DTC U0140:00

Remote Function Actuator (RFA) Module

Pinpoint Test M: DTC U0140:00

Normal Operation
- DTC U0140:00 (Lost Communication With Body Control Module: No Sub Type Information) - sets in the Remote Function Actuator (RFA) module if data messages received from the Body Control Module (BCM) are missing. For a complete list of all network messages, refer to Module Communications Network Testing and Inspection.

This pinpoint test is intended to diagnose the following:

- Communication network concern
- RFA module
- BCM

PINPOINT TEST M: DTC U0140:00

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M1 VERIFY CUSTOMER CONCERN

- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?

Yes
GO to M2.

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.

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M2 CHECK THE COMMUNICATION NETWORK

- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the BCM pass the network test?

Yes
GO to M3.

No
REFER to Module Communications Network Testing and Inspection.

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M3 RETRIEVE THE RECORDED DTCs FROM THE RFA MODULE SELF-TEST

- Check for recorded RFA module DTCs from the self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?

Yes
For DTC U3003:16, GO to Pinpoint Test O. For DTC U3003:17, GO to Pinpoint Test P. Pinpoint Test O: DTC U3003:16 Pinpoint Test P: DTC U3003:17

No
GO to M4.

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M4 CHECK FOR DTCs U3003:16 AND U3003:17 FROM THE BCM SELF-TEST

- Retrieve the continuous memory DTCs from the BCM self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?

Yes
For DTC U3003:16, GO to Pinpoint Test F Pinpoint Test F: DTC U3003:16. For DTC U3003:17, GO to Pinpoint Test G Pinpoint Test G: DTC U3003:17.

No
GO to M5.

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M5 RECHECK THE RFA MODULE DTCs

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the PMI may not have been carried out.

- Clear the DTCs. Repeat the RFA module self-test.
- Is DTC U0140:00 still present?

Yes
GO to M6.

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.

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M6 CHECK FOR DTC U0140:00 OR DTC U0140 OTHER MODULES

- Clear all DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0140:00 or DTC U0140 set in any other module?

Yes
INSTALL a new BCM. REFER to Body Control Module (BCM) Body Control Module (BCM). TEST the system for normal operation.

No
INSTALL a new RFA module. REFER to Remote Function Actuator (RFA) Module Service and Repair. TEST the system for normal operation.

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