Pinpoint Test I: DTC U0151:00

Anti-Lock Control

Pinpoint Test I: DTC U0151:00

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

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
- ABS module

PINPOINT TEST I: DTC U0151:00

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I1 VERIFY THE CUSTOMER CONCERN

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

Yes
GO to I2.

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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I2 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 pass the network test?

Yes
GO to I3.

No
REFER to Module Communications Network Testing and Inspection.

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I3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND RCM MODULE SELF-TESTS

- Check for recorded receiving module and transmitting module DTCs from the self-test.
- Is DTC U3003:16 (or B1318) or DTC U3003:17 (or B1317) recorded?

Yes
For the ABS module, REFER to DTC Charts. [1][2]Diagnostic Trouble Code Descriptions

For the RCM, REFER to Supplemental Restraint System Testing and Inspection.

No
GO to I4.

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I4 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 or DTC U0151 set in more than one module?

Yes
INSTALL a new RCM. REFER to Supplemental Restraint System Service and Repair. 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.

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