Antilock Brakes / Traction Control Systems

Anti-Lock Control

Pinpoint Test K: DTC U0151:00

Refer to Wiring Diagram Set 42, Vehicle Dynamic Systems for schematic and connector information [1][2]Diagrams By Number.

Normal Operation

- DTC U0151:00 (Lost Communication With Restraints Control Module: No Sub Type Information)- sets in continuous memory and on-demand if the yaw rate or lateral accelerometer messages from the Restraints Control Module (RCM) are not received for 5 seconds or longer.

This pinpoint test is intended to diagnose the following:

- RCM (Restraints Control Module)

- ABS module

PINPOINT TEST K : DTC U0151:00

K1 VERIFY THE CUSTOMER CONCERN

- Ignition ON.

- Verify that there is an observable symptom present.

Is an observable symptom present?

Yes
GO to K2.

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.

K2 CHECK THE COMMUNICATION NETWORK

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Network Test.

- Carry out the network test.

Does the RCM (Restraints Control Module) pass the network test?

Yes
GO to K3.

No
REFER to Information Bus.

K3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND RCM (Restraints Control Module) MODULE SELF-TESTS

- Check for recorded receiving module and transmitting module DTCs from the self-test.

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

Yes
For DTC B11E8:16, GO to Pinpoint Test A Pinpoint Test A: DTC B11E8:16.

For DTC B11E8:17, GO to Pinpoint Test B Pinpoint Test B: DTC B11E8:17.

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

No
GO to K4.

K4 RECHECK THE ABS MODULE DTCs

- Clear the DTCs.

- Wait 10 seconds.

- Repeat the ABS module self-test.

Is DTC U0151:00 still present?

Yes
GO to K5.

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.

K5 CHECK FOR DTC U0151:00 SET IN OTHER MODULES

- Clear the DTCs.

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

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

- Retrieve the continuous memory DTCs from all modules.

Is DTC U0151:00 set in the Accessory Protocol Interface Module (APIM)?

Yes
INSTALL a new RCM (Restraints Control Module). 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.