Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b1578 meter

Subaru Legacy BN/BS (2015-2019) Service Manual / Immobilizer (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc b1578 meter

DIAGNOSIS START CONDITION:

• Battery voltage is 10 V or more.

• The remote engine starter was not used to start the engine.

DTC DETECTING CONDITION:

Reference code incompatibility between combination meter and body integrated unit or communication failure between body integrated unit and ECM

TROUBLE SYMPTOM:

• Engine will not start.

• The security indicator illuminates.

STEP	CHECK	YES	NO
1.CHECK DTC. Read the DTC of the body integrated unit. Read Diagnostic Trouble Code (DTC)	Is either DTC B1401, B1407 or B1408 displayed-	Perform the diagnosis according to the DTC.	Perform the diagnosis of DTC B1572. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1572 IMM CIRCUIT EXCEPT ANTENNA CIRCUIT

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Other materials:

Intake manifold vacuum inspection
1. Warm up the engine.2. Remove the collector cover.(1) Carefully pull up the rear of collector cover at two positions (A).(2) Carefully pull up the front of collector cover at two positions (B) while moving it forward.3. Disconnect the brake booster vacuum hose from the intake manifold, and attach ...