Pinpoint Test AI: DTC U0151:00

Information and Entertainment System

Pinpoint Tests


Pinpoint Test AI: DTC U0151:00

Normal Operation

The Accessory Protocol Interface Module (APIM) receives the eCall status message from the Restraints Control Module (RCM) via the High Speed Controller Area Network (HS-CAN). This message indicates to the APIM the status of the emergency call system.

- DTC U0151:00 (Lost Communication With Restraints Control Module: No Sub Type Information) - set by the APIM when it is missing the eCall status 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 AI: DTC U0151:00

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AI1 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 U0151:00 set in any modules?

Yes
GO to AI2.

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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AI2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs


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

Yes
For the APIM, REFER to DTC Charts. Diagnostic Trouble Code Tests and Associated Procedures

For all other modules, REFER to the master list in Body Control Systems.

No
GO to AI3.

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AI3 CHECK FOR DTC U0151 OR DTC U0151:00 SET IN MULTIPLE MODULES


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

Yes
GO to AI4.

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 a fault.

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AI4 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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