Pinpoint Test J: DTC U0155:00

Blind Spot Monitoring

Pinpoint Test J: DTC U0155:00

Normal Operation

The Side Obstacle Detection Control Module - Right (SOD-R) and Side Obstacle Detection Control Module - Left (SOD-L) receive network messages from the Instrument Panel Cluster (IPC) via the Medium Speed Controller Area Network (MS-CAN). The following information is included in the messages:

- Transmission gear selected
- Vehicle speed

As more than one module receives these messages, all modules receiving a particular message should exhibit a symptom if the message is missing.

- DTC U0155:00 (Lost Communication With Instrument Panel Cluster ( IPC) Control Module: No Sub Type Information) - set by the SOD-R or the SOD-L when network messages are missing from the IPC for greater than 2 seconds with the ignition in RUN.

This pinpoint test is intended to diagnose the following:

- Communication network concern
- Blind Spot Information System (BLIS(TM))/Cross Traffic Alert (CTA) system concern
- IPC


PINPOINT TEST J: DTC U0155:00

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J1 VERIFY THE CUSTOMER CONCERN

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

Yes
GO to J2.

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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J2 CHECK THE COMMUNICATION NETWORK

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

Yes
GO to J3.

No
REFER to Module Communications Network Testing and Inspection.

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J3 RECHECK THE SOD-R OR THE SOD-L DTCs

- Clear the DTCs. Repeat the SOD-R or the SOD-L self-test.
- Is DTC U0155:00 still present?

Yes
GO to J4.

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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J4 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 U0155:00 set in any module?

Yes
GO to J5.

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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J5 CHECK FOR CORRECT IPC OPERATION

- Disconnect the IPC connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the IPC connector and make sure it seats correctly.
- Is the concern still present?

Yes
INSTALL a new IPC. REFER to Instrumentation, Message Center, and Warning Chimes Instrument Panel Cluster (IPC). 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. REPEAT the self-test for the module(s) that set DTC U0155:00.

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