Pinpoint Test Ck: Abs Module Communication Concern With The IPMB
- Normal Operation and Fault Conditions
The IPMB is an internal component of the Advanced Driver Assistance Systems (ADAS) module. The IPMB may also be known as the Camera Module - Rear.
With the ignition ON, the Advanced Driver Assistance Systems (ADAS) module sends 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 Advanced Driver Assistance Systems (ADAS) module 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 IPMB and Advanced Driver Assistance Systems (ADAS) module, 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 U023B:00 Lost Communication With Image Processing Module B: No Sub Type Information This DTC sets when the ABS module does not receive any messages from the IPMB within the allowed time. Possible Causes
- Network communication concern
- IPMB - part of the Advanced Driver Assistance Systems (ADAS) module
- CK1 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Using a diagnostic scan tool, carry out the Network Test.
Does the IPMB pass the Network Test?
Yes DIAGNOSE the IPMB Diagnostic Trouble Codes (DTCs). REFER to the appropriate service information. If thre are no IPMB Diagnostic Trouble Codes (DTCs), GO to CK2 No DIAGNOSE the no communication with the IPMB. REFER to: Controller Area Network (CAN) Module Communications Network . - CK2 RECHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE FOR THE LOST COMMUNCATION DTC (DIAGNOSTIC TROUBLE CODE)
- Using a diagnostic scan tool, clear the ABS module Diagnostic Trouble Codes (DTCs).
- Put the ABS module in sleep mode by performing the following steps:
- With ALL doors closed, set the ignition from ON to OFF.
- Disconnect the diagnostic scan tool.
- Open the door, exit the vehicle and close the door.
- Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
- Ignition ON.
- Using a diagnostic scan tool, carry out the ABS module self-test.
Are any of the DTCs listed in the Fault Trigger Conditions table still present?
Yes GO to CK3 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. - CK3 CHECK FOR VOLTAGE-RELATED 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 CK4 - CK4 CHECK FOR IPMB (IMAGE PROCESSING MODULE B) DTCS
- Using a diagnostic scan tool, carry out the IPMB self-test.
Are any DTC present in the IPMB?
Yes DIAGNOSE the IPMB Diagnostic Trouble Codes (DTCs). REFER to the appropriate service information. No GO to CK5 - CK5 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNNOTE: 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 IPMB 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.
- VERIFY the correct replacement module was installed.
- Operate the system and determine if the observable symptom is still present.
Is the observable symptom still present?
Yes GO to CK6 No The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration. - Check the vehicle service history for recent service actions related to the IPMB or ABS module. If recent service history is found:
- CK6 CHECK FOR COMMUNICATION DIAGNOSTIC TROUBLE CODES (DTCS) IN OTHER MODULES
- Ignition ON.
- Using a diagnostic scan tool retreve all Diagnostic Trouble Codes (DTCs).NOTE: DTCs may be displayed from previous diagnostic actions.
Is DTC U023B:xx set in one or more modules in addition to the ABS module?
Yes GO to CK7 No GO to CK8 - CK7 VERIFY IPMB (IMAGE PROCESSING MODULE B) OPERATION
- Put the ABS module in sleep mode by performing the following steps:
- With ALL doors closed, set the ignition from ON to OFF.
- Disconnect the diagnostic scan tool.
- Open the door, exit the vehicle and close the door.
- Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
- 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 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new IPMB. REFER to the appropriate service information. 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. - Put the ABS module in sleep mode by performing the following steps:
- CK8 VERIFY ABS (ANTI-LOCK BRAKE SYSTEM) OPERATION
- Put the ABS module in sleep mode by performing the following steps:
- With ALL doors closed, set the ignition from ON to OFF.
- Disconnect the diagnostic scan tool.
- Open the door, exit the vehicle and close the door.
- Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
- 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 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 The HCU and ABS module are a single assembly known as the EBB unit. CHECK OASIS for any 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 module. 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. - Put the ABS module in sleep mode by performing the following steps: