Pinpoint Tests AU: DTC U0111

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AU: DTC U0111

Normal Operation
- DTC U0111 (Lost Communication With Battery Energy Control Module) - sets in continuous memory in the Instrument Cluster (IC) if data messages received from the Battery Control Module (BCM) over the High Speed Controller Area Network (HS-CAN) are missing. For a complete list of all network messages, refer to Information Bus.

This pinpoint test is intended to diagnose the following:

- BCM
- IC



PINPOINT TEST AU: DTC U0111

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AU1 VERIFY THE CUSTOMER CONCERN


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

Yes
GO to AU2.

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

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AU2 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 AU3.

No
REFER to Information Bus.

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AU3 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


- Check for recorded IC DTCs from the self-test.
- Is DTC B1317 or B1318 recorded?

Yes
Go To Pinpoint Test AP (B1317) or Go To Pinpoint Test AQ (B1318). Pinpoint Tests AP: DTC B1317 Pinpoint Tests AQ: DTC B1318

No
GO to AU4.

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AU4 RECHECK THE IC DTCs


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

- Clear the DTCs. Repeat the IC self-test.
- Is DTC U0111 still present?

Yes
GO to AU5.

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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AU5 CHECK FOR DTC U0111 SET IN OTHER MODULES


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0111 set in the Transmission Control Module (TCM) module?

Yes
INSTALL a new BCM. CLEAR the DTCs. REPEAT the self-test.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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