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Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Combination meter (diagnostics) / Subaru select monitor / Inspection

1. COMMUNICATION FOR INITIALIZING IMPOSSIBLE

DETECTING CONDITION:

• Defective harness connector

• Power supply circuit malfunction

• Defective combination meter

• Defective CAN communication circuit

• Defective Subaru Select Monitor

TROUBLE SYMPTOM:

Communication is impossible between combination meter and Subaru Select Monitor.

WIRING DIAGRAM:

NOTE:

For the coupling connector, refer to “WIRING SYSTEM”.

• Combination meter system Combination Meter System > WIRING DIAGRAM

• CAN communication system CAN Communication System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK FUSE.

Check the fuse.

Is there any fault-

Subaru Select Monitor > INSPECTION

Replace the fuse. If the replaced fuse blows out easily, repair the ground short circuit in the harness between the battery and combination meter.

2.CHECK HARNESS.

1) Turn the ignition switch to OFF.

2) Disconnect the connector of combination meter.

3) Turn the ignition switch to ON.

4) Use a tester to measure the voltage between the combination meter connector and chassis ground.

Connector & terminal

(i10) No. 1 (+) — Chassis ground (−):

(i10) No. 2 (+) — Chassis ground (−):

Is the voltage 10 — 13 V-

Subaru Select Monitor > INSPECTION

Repair the open circuit of harness between combination meter connector and fuse.

3.CHECK HARNESS.

Use a tester to measure the resistance between the combination meter connector and chassis ground.

Connector & terminal

(i10) No. 20 — Chassis ground:

(i10) No. 40 — Chassis ground:

Is the resistance less than 1 --

Subaru Select Monitor > INSPECTION

Repair the open circuit of harness between combination meter connector and chassis ground.

4.CHECK LAN SYSTEM.

Inspect LAN system. Basic Diagnostic Procedure

Is there any fault-

Perform the inspection according to the diagnosis for LAN system.

Subaru Select Monitor > INSPECTION

5.CHECK COMBINATION METER.

1) Turn the ignition switch to OFF.

2) Connect the combination meter connector.

3) Communicate with the combination meter using the Subaru Select Monitor.

Is communication possible-

The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE:

In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Replace the combination meter. Combination Meter

Operation
• For detailed operation procedures, refer to “Application help”.• When the combination meter cannot communicate with Subaru Select Monitor, perform “COMMUNICATION FOR IN ...

System operation check mode
...

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