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July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Pinpoint Test R: Abs Module Communication Concern With CCM

  1. Normal Operation and Fault Conditions 

    The CCM communicates with the IPMA over a private CAN. The IPMA sends the CCM messages to the ABS module over the FD-CAN. If the ABS module does not receive these messages within the allotted time frame or if the messages contain invalid data, the module sets a DTC. This can be due to a CCM failure, a circuit failure on the network or an excessive load on the network. For information on the messages sent to the ABS module by the CCM and IPMA, REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    ABS U2107:00 Collision Mitigation By Braking: No Sub Type Information This DTC sets when the collision deceleration message from the is sent too often or the duration of the message is too long.

    Possible Causes 

    • Network communication concern
    • CCM

  2. R1 CHECK THE IPMA (IMAGE PROCESSING MODULE A) COMMUNICATION NETWORK

    • Ignition ON.

    • Using a diagnostic scan tool, carry out the Network Test.

    Does the IPMA pass the Network Test? 

    Yes  RETRIEVE and RECORD all IPMA Diagnostic Trouble Codes (DTCs). REFER to: Rear View Mirrors . if there are no IPMA Diagnostic Trouble Codes (DTCs), GO to  R2
    No  DIAGNOSE the GWM does not communicate with the diagnostic scan tool, REFER to: Controller Area Network (CAN) Module Communications Network .

  3. R2 CHECK FOR RETURNING ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DTC (DIAGNOSTIC TROUBLE CODE) S

    • Ignition ON.

    • Using a diagnostic scan tool, carry out the ABS module self-test.

    • Retrieve and record all ABS module DTC s.

    • Using a diagnostic scan tool, clear the ABS module DTC s.

    • Ignition OFF.

    • Ignition ON.

    • Using a diagnostic scan tool, carry out the ABS module self-test.

    • Retrieve and record all ABS module DTC s.

    Are any of the Diagnostic Trouble Codes (DTCs) in the DTC Fault Trigger Conditions table retrieved again? 

    Yes  GO to  R3
    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.

  4. R3 CHECK FOR VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) IN THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE

    • Review the recorded Diagnostic Trouble Codes (DTCs) from the ABS module.

    Is DTC U3003:16 or U3003:17 present in the ABS module? 

    Yes  For ABS module DTC U3003:16, GO to Pinpoint Test A  For ABS module DTC U3003:17, GO to Pinpoint Test F 
    No  GO to  R4

  5. R4 RETRIEVE ALL CCM (CRUISE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition ON.

    • Using a diagnostic scan tool, carry out the CCM module self-test.

    Are any CCM Diagnostic Trouble Codes (DTCs) present? 

    Yes  DIAGNOSE the CCM Diagnostic Trouble Codes (DTCs). REFER to: Cruise Control . REFER to: Cruise Control .
    No  GO to  R5

  6. R5 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

    NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

    • Check the vehicle service history for recent service actions related to the CCM or ABS module. If recent service history is found:

      • Verify the correct replacement module was installed.

        • HVBOM may be used to verify correct part fitment.

      • Verify the configuration of replacement module was correct.

        • re-configure the module using as-built data if prior configuration is suspect.

      • Verify the module was not obtained from a like vehicle and installed into customer vehicle.

        • return the swapped module to source vehicle and obtain new replacement module.

    • Operate the system and determine if the observable symptom is still present.

    Is the observable symptom still present? 

    Yes  GO to  R6
    No  The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

  7. R6 CHECK FOR COMMUNICATION DIAGNOSTIC TROUBLE CODES (DTCS) IN OTHER MODULES

    • Ignition ON.

    • Using a diagnostic scan tool retrieve all Diagnostic Trouble Codes (DTCs).

    Is DTC U0104:xx U0405:xx, or U2107:xx present in one or more modules in addition to the ABS module? 

    Yes  GO to  R7
    No  GO to  R8

  8. R7 CHECK FOR CORRECT CCM (CRUISE CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect ABS module C135.

    • Using a good light source, inspect all disconnected electrical connectors for the following:

      • Corrosion - INSTALL new connector or terminal and clean the module pins
      • Damaged or bent pins - INSTALL new terminals or pins
      • Pushed-out pins - INSTALL new pins as necessary
      • Spread terminals - INSTALL new terminals as necessary

    • Connect CCM C1582. Make sure it seats and latches correctly.

    • Connect ABS module C135. Make sure it seats and latches correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new CCM. REFER to: Cruise Control Module (CCM) .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. Refer to Connector Repair Procedures for schematic and connector information.

  9. R8 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

    • Ignition OFF.

    • Disconnect CCM.

    • Disconnect ABS module C135.

    • Using a good light source, inspect all disconnected electrical connectors for the following:

      • Corrosion - install new connector or terminal and clean the module pins
      • Damaged or bent pins - install new terminals or pins
      • Pushed-out pins - install new pins as necessary
      • Spread terminals - install new terminals as necessary

    • Connect CCM. Make sure it seats and latches correctly.

    • Connect ABS module C135. Make sure it seats and latches correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new EBB unit. REFER to: Electric Brake Booster (EBB) .
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues. Refer to Connector Repair Procedures for schematic and connector information.
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