LAN SYSTEM (DIAGNOSTICS) > Basic Diagnostic Procedure

1. WITH SUBARU SELECT MONITOR

CAUTION:

• Subaru Select Monitor is required for reading DTC, performing diagnosis and reading current data.

• Remove foreign matter (dust, water, oil, etc.) from the body integrated unit connector during removal and installation.

• For model with immobilizer or model with keyless access, registration of immobilizer may be needed after the replacement of controller etc. For details, refer to the “PC application help for Subaru Select Monitor”.

NOTE:

• To check harness for open or short circuits, shake the suspected trouble spot or connector.

• Check List for Interview

STEP	CHECK	YES	NO
1.CHECK PRE-INSPECTION. Ask the customer when and how the trouble occurred using the interview check list.	Did you interview the customer?		Interview the customer.
2.BASIC INSPECTION. Check the components which might affect body control.	Is the component that might influence the body control problem normal?		Repair or replace each component.
3.CHECK DTC. 1) Read the DTC. NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. 2) Record all DTCs and freeze frame data.	Is DTC displayed on the Subaru Select Monitor?
4.PERFORM GENERAL DIAGNOSTICS. Inspect using the “General Diagnostics Table”.	Is result of inspection OK?	LAN system is normal.
5.PERFORM DIAGNOSIS. 1) Correct the cause of trouble. 2) Perform the Clear Memory Mode. 3) Read the DTC.	Is DTC displayed on the Subaru Select Monitor?	Repeat step 5 until DTC is not shown.	Finish the diagnosis.