Pinpoint Test I: DTC U0151:00

Anti-Lock Control

Pinpoint Test I: DTC U0151:00

Refer to Wiring Diagram Set 14, Vehicle Dynamic Systems for schematic and connector information Electrical Diagrams.

Normal Operation

- DTC U0151:00 (Lost Communication With Restraints Control Module: No Sub Type Information)- this DTC sets in the ABS module if it does not receive Yaw, or other sensor messages from the Restraints Control Module (RCM) for 5 seconds or longer.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- RCM (Restraints Control Module)

- ABS module

PINPOINT TEST I : DTC U0151:00

I1 CHECK THE COMMUNICATION NETWORK

- Ignition ON.

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

Does the RCM (Restraints Control Module) pass the Network Test?

Yes
GO to I2.

No
REFER to Information Bus.

I2 CHECK THE ABS MODULE CMDTCs (Continuous Memory Diagnostic Trouble Codes)

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

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

- Ignition OFF.

- Ignition ON.

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

Is DTC U0151:00 present?

Yes
GO to I3.

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.

I3 CHECK THE ABS MODULE FOR BATTERY VOLTAGE DTCs

- Review the ABS module DTCs retrieved in the previous step.

Is DTC U3003:16 or DTC U3003:17 present?

Yes
GO to Pinpoint Test L Pinpoint Test L: DTCs U3003:16, U3003:17.

No
GO to I4.

I4 CHECK THE RCM (Restraints Control Module) CMDTCs (Continuous Memory Diagnostic Trouble Codes)

- Enter the following diagnostic mode on the scan tool: Self Test- RCM (Restraints Control Module).

Is DTC U3006:16 or U3006:17 present?

Yes
DIAGNOSE the RCM (Restraints Control Module) DTCs. REFER to Restraints and Safety Systems &/or Air Bag Systems.

No
GO to I5.

I5 CHECK FOR DTC U0151:00 SET IN OTHER MODULES

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

Is DTC U0151:00 or DTC U0151 set in more than one module?

Yes
INSTALL a new RCM (Restraints Control Module). TEST the system for normal operation. CLEAR the DTCs. REPEAT the ABS module self-test.

No
INSTALL a new ABS module. REFER to Hydraulic Control Unit (HCU) Service and Repair. TEST the system for normal operation.