Subaru Crosstrek Service Manual: Dtc u0423 invalid data received from instrument panel cluster control module
LAN SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE
DTC DETECTING CONDITION:
Defective data was transmitted from combination meter.
TROUBLE SYMPTOM:
Display of combination meter does not operate properly.
| STEP | CHECK | YES | NO |
1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.
Was the basic diagnostic procedure performed up to STEP 3?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 2.
Perform the basic diagnostic procedure. Basic Diagnostic Procedure">
2.CHECK DTC.
Check the displayed DTC.
Are DTCs other than U*** displayed?
Perform the diagnosis according to DTC.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 3.
3.CHECK DTC.
Check the displayed DTC.
Is DTC for the bus off or the data no-receive displayed?
Perform the diagnosis according to DTC.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 4.
4.CHECK DTC.
Check the displayed DTC.
Is U0423 a current malfunction?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 5.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 9.
5.CHECK DTC.
1) Turn the ignition switch to OFF.
2) Disconnect the combination meter connector.
3) Connect the disconnected connectors.
4) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">
Is U0423 a current malfunction?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 6.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 9.
6.CHECK DTC.
Using the Subaru Select Monitor, read DTC of all the systems. Read Diagnostic Trouble Code (DTC)">
Is the meter data abnormal detected in several modules?
Replace the combination meter. Combination Meter">
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 7.
7.REPLACE MODULE.
1) Replace the combination meter.
2) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">
Is U0423 a current malfunction?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 8.
System is normal.
8.CHECK MODULE.
1) Replace the current combination meter with the original combination meter.
2) Replace the module that the DTC has been detected.
3) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">
Is U0423 a current malfunction?
Replace the combination meter. Combination Meter">
System is normal.
9.CHECK HARNESS.
1) Shake the harness, and check for poor contact.
2) Using the Subaru Select Monitor, read DTC of CAN system. Read Diagnostic Trouble Code (DTC)">
Is U0423 a current malfunction?
Repair the poor contact of harness, or replace the harness.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE">Go to Step 10.
10.CHECK CONNECTOR.
Check the connector used for high speed CAN for poor contact.
Is there poor contact of connector?
Repair the connector that has poor contact, or replace harness.
It is possible that temporary poor communication occurs. Delete the DTC.
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