Pinpoint Test T: U0159:87 Or U045A:00
- Refer to MODULE COMMUNICATIONS NETWORK
for schematic and connector information.
Normal Operation and Fault Conditions
The IPMB communicates with the PAM through the HS-CAN2, GWM and HS-CAN1.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition IPMB U0159:87 Lost Communication With Parking Assist Control Module "A": Missing Message Sets in continuous memory in the IPMB if expected messages from the PAM are not received for 5 seconds or more when the ignition is on. IPMB U045A:00 Invalid Data Received From Parking Assist Control Module "A": No Sub Type Information Sets in the IPMB when the IPMB received invalid network data from the PAM through the GWM for 5 seconds or longer. Possible Sources
- Communication network concern
- PAM (integral to the BCM)
- IPMB
- GWM
- T1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify whether an observable symptom is present.
Is an observable symptom present?
Yes GO to T2 No CLEAR the DTC. The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. - T2 CHECK THE COMMUNICATION NETWORK
- Using a diagnostic scan tool, perform the network test
Does the PAM pass the network test?
Yes GO to T3 No REFER to: Ethernet Module Communications Network - T3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform the PAM self-test.
Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs). REFER to: Parking Aid No GO to T4 - T4 PERFORM THE IPMB (IMAGE PROCESSING MODULE B) SELF-TEST
- Using a diagnostic scan tool, perform the IPMB self-test.
Are any non-network Diagnostic Trouble Codes (DTCs) present?
Yes DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs). REFER to the Diagnostic Trouble Code (DTC) Chart . No GO to T5 - T5 RECHECK THE IPMB (IMAGE PROCESSING MODULE B) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CM DTCS)
- Using a diagnostic scan tool, clear the IPMB Diagnostic Trouble Codes (DTCs).
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Using a diagnostic scan tool, retrieve the IPMB Continuous Memory Diagnostic Trouble Codes (CM DTCs).
Is DTC U0159:87 or U045A:00 still present?
Yes GO to T6 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. - T6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN
- CHECK the vehicle service history for recent service actions related to the PAM or IPMB. If recent service history is found:
- verify correct replacement module was installed
- vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
- re-configure 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 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 T7 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 PAM or IPMB. If recent service history is found:
- T7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) MODULE OPERATION
- Ignition OFF.
- Disconnect and inspect all BCM connectors and related in-line connectors.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the BCM connectors and related in-line connectors. Make sure they seat and latch 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 newBCM. Refer to the BODY CONTROL MODULE (BCM) . 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.