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Subaru Legacy Service Manual: Dtc u0423 invalid data received from instrument panel cluster control module

NOTE:

Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. Basic Diagnostic Procedure

1. OUTLINE OF DIAGNOSIS

Detect malfunction of CAN communication.

Judge as NG when data received from the combination meter is not normal.

2. EXECUTION CONDITION

Secondary Parameters

Execution condition

Turbine shaft speed

> 0 rpm

or

D range switch

ON

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment Value

Malfunction Criteria

Threshold Value

CAN data from meter

Freeze

Time Needed for Diagnosis: 2 seconds

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