Subaru Crosstrek Service Manual: Inspection

1. COMMUNICATION FOR INITIALIZING IMPOSSIBLE

When communication with the radar sensor is impossible

Detecting condition:

• Defective harness connector

• Power supply circuit malfunction

• Defective radar sensor

• Defective CAN communication circuit

• Defective Subaru Select Monitor

1.CHECK FUSE.

1) Turn the ignition switch to OFF.

2) Check the fuse for radar sensor LH. Relay and Fuse">

Is it normal?

Subaru Select Monitor > INSPECTION">Go to Step 2.

Replace the fuse. If the replaced fuse has blown out immediately, repair the short circuit to ground in harness between fuse and radar sensor LH.

2.CHECK HARNESS (OPEN CIRCUIT).

1) Disconnect the radar sensor LH connector.

2) Turn the ignition switch to ON.

3) Using a tester, measure the voltage between radar sensor LH connector (harness side) and chassis ground.

Connector & terminal

(R25) No. 5 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Subaru Select Monitor > INSPECTION">Go to Step 3.

Repair the open circuit of harness between fuse and radar sensor LH connector.

3.CHECK HARNESS (OPEN CIRCUIT).

1) Turn the ignition switch to OFF.

2) Using a tester, measure the resistance between radar sensor LH connector (harness side) and chassis ground.

Connector & terminal

(R25) No. 10 — Chassis ground:

Is the resistance less than 1 ??

Subaru Select Monitor > INSPECTION">Go to Step 4.

Repair the open circuit in harness between radar sensor and chassis ground.

4.CHECK LAN SYSTEM.

1) Connect the radar sensor LH connector.

2) Inspect LAN system. Basic Diagnostic Procedure">

Is it normal?

Subaru Select Monitor > INSPECTION">Go to Step 5.

Perform the inspection according to the diagnosis for LAN system.

5.CHECK RADAR SENSOR.

Communicate with the radar sensor.

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 radar sensor LH. Radar Sensor">

Subaru select monitor

Operation

Other materials:

Disassembly
FRONT SUSPENSION > Front StrutDISASSEMBLY1. Using a coil spring compressor, compress the coil spring - front.2. Using a hexagon wrench to prevent strut rod from turning, remove the self-locking nut with ST.CAUTION:When installing the coil spring compressor to the coil spring, follow the operation ...

Harness components location Location
WIRING SYSTEM > Harness Components LocationLOCATION(1)Front wiring harness(7)Rear wiring harness RH(12)Front door cord LH(2)Engine wiring harness(8)Rear wiring harness LH(13)Transmission cord(3)Bulkhead wiring harness(9)Roof cord(14)Generator cord(4)Instrument panel wiring harness(10)Rear gate co ...

Removal
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Fuel Delivery and Evaporation LinesREMOVALWARNING:Place “NO OPEN FLAMES” signs near the working area.CAUTION:Be careful not to spill fuel.1. Release the fuel pressure. Fuel > PROCEDURE">2. Open the fuel filler lid and remove the fuel f ...