Pinpoint Tests BD: DTC U0151

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test BD: DTC U0151

Normal Operation
- DTC U0151 (Lost Communication With Restraints Control Module) - sets in continuous memory in the Instrument Cluster (IC) if data messages received from the Restraints Control Module (RCM) over the High Speed Controller Area Network (HS-CAN) 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:

- RCM
- IC


PINPOINT TEST BD: DTC U0151

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BD1 VERIFY THE CUSTOMER CONCERN

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

Yes
GO to BD2.

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

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BD2 CHECK THE COMMUNICATION NETWORK

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

Yes
GO to BD3.

No
REFER to Module Communications Network Testing and Inspection.

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BD3 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST

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

Yes
GO to Pinpoint Test AS (B1317) or GO to Pinpoint Test AT (B1318). Pinpoint Tests AS: DTC B1317 Pinpoint Tests AT: DTC B1318

No
GO to BD4.

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BD4 RECHECK THE IC DTCs

- Clear the DTCs. Repeat the IC self-test.
- Is DTC U0151 still present?

Yes
GO to BD5.

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

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BD5 CHECK FOR DTC U0151 SET IN 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 U0151 set in the Occupant Classification System Module (OCSM)?

Yes
INSTALL a new RCM. REFER to Supplemental Restraint System Service and Repair. 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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