Honda Civic manuals

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

1. COMMUNICATION FOR INITIALIZING IMPOSSIBLE

When communication with the navigation unit is impossible

DETECTING CONDITION:

Defective harness connector

Power supply circuit malfunction

Infotainment system module malfunction

Defective CAN communication circuit

Defective Subaru Select Monitor

TROUBLE SYMPTOM:

Communication is impossible between the infotainment system module and Subaru Select Monitor.

WIRING DIAGRAM:

NOTE:

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

Audio system Audio System > WIRING DIAGRAM

Navigation system Navigation System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK OTHER COMMUNICATION.

Communicate with the system other than the infotainment system using the Subaru Select Monitor.

Is the communication to other control module possible-

Subaru Select Monitor > INSPECTION

Perform the “Communication for Initializing Impossible” of LAN system.

2.CHECK LAN SYSTEM.

Inspect LAN system. Basic Diagnostic Procedure > PROCEDURE

Is there any fault-

Perform the inspection according to the diagnosis for LAN system.

Subaru Select Monitor > INSPECTION

3.CHECK FUSE.

Check the fuse of the infotainment system. Relay and Fuse > LOCATION

Is it normal-

Subaru Select Monitor > INSPECTION

Replace the fuse. If the replaced fuse blows out easily, repair the ground short circuit of the harness between the battery and audio (7-inch display) connector, or between the navigation unit connector.

4.CHECK HARNESS.

1) Turn off the audio (7-inch display) or navigation unit.

2) Disconnect the audio (7-inch display) connector or navigation unit connector.

3) Turn the ignition switch to ON.

4) Using the tester, measure the voltage between audio (7-inch display) connector or navigation unit connector and chassis ground.

Connector & terminal

(i85) No. 4 (+) — Chassis ground (−): (without power amplifier)

(i35) No. 4 (+) — Chassis ground (−): (with power amplifier)

(i87) No. 1 (+) — Chassis ground (−):

Is the voltage 10 — 13 V-

Subaru Select Monitor > INSPECTION

Repair the open circuit of harness between audio (7-inch display) connector or navigation unit connector and fuse.

5.CHECK INFOTAINMENT SYSTEM MODULE.

1) Turn the ignition switch to OFF.

2) Connect the audio (7-inch display) connector or navigation unit connector.

3) Perform the communication with the infotainment system.

Is communication possible-

It is possible that temporary poor communication occurs.

Replace the audio (7-inch display) or navigation unit. Audio Navigation Body

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

Instrumentation driver info
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Other materials:

Assembly
1. Before assembly, check each part. Rear Shock Absorber > INSPECTION2. Using a coil spring compressor, compress the coil spring - rear.CAUTION:When installing the coil spring compressor to the coil spring, follow the operation manual accompanied with the coil spring compressor during operation.3. ...

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