DTC U0073 [MULTIPLEX COMMUNICATION SYSTEM]
id0902e6824800
|
DTC |
U0073 |
• PCM
• TCM
• DSC/RSC HU/CM
• BCM
• AWD control module
• PLG control module
• SAS control module
• Keyless control module
• Instrument cluster
|
CAN system communication error |
|---|---|---|---|
|
DETECTION CONDITION
|
• CAN system related harness malfunction
• Related module communication error
|
||
|
POSSIBLE CAUSE
|
• Open or short circuit in wiring harness
• Malfunction of connectors between PCM, TCM, ABS HU/CM, BCM, PSD control module, PLG control module, SAS control module, keyless control module, instrument cluster, BSM control module (LH), BSM control module (RH)
• PCM malfunction
• TCM malfunction
• DSC/RSC HU/CM malfunction
• BCM malfunction
• AWD control module malfunction
• PLG control module malfunction
• SAS control module malfunction
• Keyless control module malfunction
• Instrument cluster malfunction
|
||
![]() |
|||
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
INSPECT CAN SYSTEM-RELATED DTC
• Are any DTCs other than the following displayed?
|
Yes
|
Determine malfunctioning part in CAN system.
|
|
No
|
Go to the next step.
|
||
|
2
|
INSPECT CONNECTOR
• Inspect the connector of the module that outputs the DTC.
• Is it normal?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace the connector, then go to Step 4.
|
||
|
3
|
INSPECT WIRING HARNESSES
• Inspect for the following malfunctioning wiring harnesses:
• Is there any malfunction?
|
Yes
|
Repair or replace the wiring harness, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
4
|
VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC using the M-MDS.
• Is the same DTC present?
|
Yes
|
Replace the module that outputs the DTC, then retry this step.
|
|
No
|
Troubleshooting completed.
|
||