Pinpoint Test AF: DTC U0151:00

Information and Entertainment System

Pinpoint Test AF: DTC U0151:00

Normal Operation

The Accessory Protocol Interface Module (APIM) receives the emergency call notification message from the Restraints Control Module (RCM) via the High Speed Controller Area Network (HS-CAN). This message indicates to the APIM (Accessory Protocol Interface Module) the status of 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 (Accessory Protocol Interface Module) when it is missing the emergency call notification message from the RCM (Restraints Control Module) over the HS-CAN (High Speed Controller Area Network) 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 AF : DTC U0151:00

AF1 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 AF2.

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

AF2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

- Carry out the self-test for the following modules:
- APIM (Accessory Protocol Interface Module)

- PCM

- RCM (Restraints Control Module)

- Instrument Panel Cluster (IPC)


Is DTC B1317, B1318, U3003:16, or U3003:17 recorded in any module?

Yes
For the APIM (Accessory Protocol Interface Module) , REFER to DTC Charts. Accessories and Optional Equipment

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

No
GO to AF3.

AF3 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 AF4.

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 Restraints and Safety Systems &/or Air Bag Systems to diagnose the symptom.

If there is no observable symptom, CHECK the wiring between the APIM (Accessory Protocol Interface Module) and the RCM (Restraints Control Module) for an intermittent fault.

AF4 CHECK FOR CORRECT RCM (Restraints Control Module) OPERATION

- Disconnect all the RCM (Restraints Control Module) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the RCM (Restraints Control Module) connectors and make sure they seat correctly.

Is the concern still present?

Yes
INSTALL a new RCM (Restraints Control Module). CLEAR all continuous DTCs. TEST the system for normal operation.

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.