Pinpoint Test AD: DTC U0155:00

Anti-Lock Control - Four-Channel

Pinpoint Test AD: DTC U0155:00

Normal Operation

- DTC U0155:00 (Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information)- a continuous memory DTC set by the ABS module if it does not receive All-Wheel Drive (AWD) range, traction control switch, trailer sway and hill descent control data from the Instrument Panel Cluster (IPC) for 5 seconds or longer.

This pinpoint test is intended to diagnose the following:

- Communication network concern

- IPC (Instrument Panel Cluster)

- ABS module

PINPOINT TEST AD : DTC U0155:00

AD1 VERIFY THE CUSTOMER CONCERN

- Ignition ON.

- Verify that there is an observable symptom present.

Is an observable symptom present?

Yes
GO to AD2.

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.

AD2 CHECK THE COMMUNICATION NETWORK

- Connect the scan tool.

- Using a scan tool, carry out the Network Test.

Does the IPC (Instrument Panel Cluster) pass the Network Test?

Yes
GO to AD3.

No
REFER to Information Bus.

AD3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND IPC (Instrument Panel Cluster) SELF-TESTS

- Enter the following diagnostic mode on the scan tool: Self Test- ABS Module.

- Enter the following diagnostic mode on the scan tool: Self Test- IPC (Instrument Panel Cluster).

Is DTC B11E8:16 (U3003:16) or DTC B11E8:17 (U3003:17) recorded?

Yes
For ABS module DTC B11E8:16, GO to Pinpoint Test P. Pinpoint Test P: DTC B11E8:16

For ABS module DTC B11E8:17, GO to Pinpoint Test Q. Pinpoint Test Q: DTC B11E8:17

For IPC (Instrument Panel Cluster) DTCs, REFER to Instrument Panel, Gauges and Warning Indicators.

No
GO to AD4.

AD4 RECHECK THE ABS MODULE DTCs

- Using a scan tool, clear the ABS module DTCs.

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

- Enter the following diagnostic mode on the scan tool: Self Test- ABS Module.

Is DTC U0155:00 still present?

Yes
GO to AD5.

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.

AD5 CHECK FOR DTC U0155:00 SET IN OTHER MODULES

- Using a scan tool, clear all CMDTCs (Continuous Memory Diagnostic Trouble Codes).

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

- Enter the following diagnostic mode on the scan tool: Self Test- All CMDTCs (Continuous Memory Diagnostic Trouble Codes).

- Retrieve the continuous memory DTCs from all modules.

Is DTC U0155:00 set in more than one module?

Yes
INSTALL a new IPC (Instrument Panel Cluster). CLEAR the DTCs. REPEAT the ABS module self-test.

No
INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . TEST the system for normal operation.