Pinpoint Test AJ: DTC U0151:00

Information and Entertainment System

Pinpoint Tests

Pinpoint Test AJ: DTC U0151:00

Normal Operation

The Accessory Protocol Interface Module (APIM) receives the air bag deployment notification message from the Restraints Control Module (RCM) via the High Speed Controller Area Network (HS-CAN). The APIM uses this message to activate the emergency call system.

As other modules outside of the audio system also receive this message, all modules receiving it should exhibit a symptom if the message is missing.

- DTC U0151:00 (Lost Communication With Restraints Control Module: No Sub Type Information) - set by the APIM when it is missing the air bag deployment notification message from the RCM over the HS-CAN for greater than 5 seconds with the ignition in the RUN position.

This pinpoint test is intended to diagnose the following:

- Communication network concern
- Restraints system concern



PINPOINT TEST AJ: DTC U0151:00

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AJ1 CHECK FOR LOST COMMUNICATION DTCs


- Ignition ON.
- Clear continuous DTCs from all modules.
- Ignition OFF.
- Ignition ON.
- Wait at least 10 seconds.
- Retrieve all continuous DTCs from all modules.
- Is DTC U0151 or DTC U0151:00 set in any modules?

Yes
GO to AJ2.

No
The system is operating correctly at this time. The DTC may have been set due to an intermittent fault in the network wiring.

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AJ2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs


- Carry out the self-test for the following modules:
- APIM
- PCM
- RCM
- Instrument Cluster (IC)
- Is DTC B1317, B1318, U3003:16 or U3003:17 recorded in any module?

Yes
For the APIM, REFER to DTC Charts. Information and Entertainment System

For all other modules, REFER to the Diagnostic Trouble Code (DTC) Chart in Body Control Systems. Diagnostic Trouble Code (DTC) Chart

No
GO to AJ3.

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AJ3 CHECK FOR DTC U0151 OR DTC U0151:00 SET IN MULTIPLE MODULES


- Review the recorded results from the self-test.
- Is DTC U0151 or DTC U0151:00 set in more than one module?

Yes
GO to AJ4.

No
If there is an observable audio system symptom, GO to Symptom Chart - General Audio System to diagnose the observed symptom. Symptom Chart - General Audio System

If there is an observable restraints system symptom, REFER to Restraint Systems to diagnose the symptom.

If there is no observable symptom, CHECK the wiring between the APIM and the RCM for an intermittent fault.

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AJ4 CHECK FOR CORRECT RCM OPERATION


- Disconnect all the RCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the RCM connectors and make sure they seat correctly.
- Is the concern still present?

Yes
INSTALL a new RCM. REFER to Restraint Systems. CLEAR all continuous DTCs. REPEAT the APIM self-test.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR all continuous DTCs. REPEAT the APIM self-test.

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