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Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0155 lost communication with instrument panel cluster (ipc) control module

Subaru Legacy BN/BS (2015-2019) Service Manual / Lan system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0155 lost communication with instrument panel cluster (ipc) control module

DTC DETECTING CONDITION:

No data is received from combination meter.

TROUBLE SYMPTOM:

Display of combination meter does not operate properly.

STEPCHECKYESNO

1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.

Was the basic diagnostic procedure performed up to STEP 8-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

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 U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

3.CHECK DTC.

Check the displayed DTC.

Is U0155 a current malfunction-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

4.CHECK DTC.

1) Check CAN communication circuit. CAN Communication Circuit Check

2) Read the DTC using Subaru Select Monitor.

Is U0155 a current malfunction-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

5.CHECK DTC.

Using the Subaru Select Monitor, read DTC of all the systems.

Is the meter data no-receive detected in several modules-

Replace the meter. Combination Meter

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

6.REPLACE MODULE.

1) Replace the combination meter.

2) Read the DTC using Subaru Select Monitor.

Is U0155 a current malfunction-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

System is normal.

7.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.

Is U0155 a current malfunction-

Replace the combination meter. Combination Meter

System is normal.

8.CHECK HARNESS.

1) Shake the harness, and check for poor contact.

2) Read the DTC using Subaru Select Monitor.

Is U0155 a current malfunction-

Repair the poor contact of harness, or replace the harness.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE

9.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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Other materials:

Basic inspection
1. VOLTAGE MEASUREMENT1. Using a voltmeter, connect the negative lead to a good ground point or negative battery terminal. Connect the positive lead to the connector or component terminal.2. Contact the positive lead of the voltmeter on connector (A). The voltmeter will indicate a voltage.3. Shift t ...

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