Pinpoint Test J: DTC U0151:00

Anti-Lock Control

Pinpoint Test J: DTC U0151:00

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:

- RCM (Restraints Control Module)

- ABS module

PINPOINT TEST J : DTC U0151:00

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.

J2 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 J3.

No
REFER to Information Bus.

J3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND RCM (Restraints Control Module) SELF-TESTS

- Check for recorded ABS module and RCM (Restraints Control Module) DTCs from the network test.

Is DTC U3003:16 (or B1318) or DTC U3003:17 (or B1317) recorded?

Yes
For the ABS module, REFER to DTC Charts Anti-Lock Brake System (ABS) and Stability Control.

For the RCM (Restraints Control Module), REFER to Restraints and Safety Systems &/or Air Bag Systems.

No
GO to J4.

J4 CHECK FOR DTC U0151:00 SET IN OTHER MODULES

- Using a scan tool, clear the DTCs.

- 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).

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
For vehicles without adaptive cruise control, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module Service and Repair. TEST the system for normal operation.

For vehicles with adaptive cruise control, INSTALL a new HCU (Hydraulic Control Unit). REFER to Hydraulic Control Unit (HCU) Service and Repair.