How To Troubleshoot

WARNING: This page is about a different car, the 2019 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.

Bring in the car
Interview and phenomenon check
1. Phenomenon check

Check the warning light

Check CAN communication system. (Refer to HOW TO TROUBLESHOOT )

Result

Result	Go to
The airbag warning light illuminates.	A
The airbag warning light does not illuminate.	B

B: Perform the diagnosis according to the trouble phenomenon

A: Go to next step

Read the DTC

Turn the ignition switch to OFF.
Connect the Subaru Select Monitor to data link connector.
Turn the ignition switch to ON and start the Subaru Select Monitor.
Read the DTC.
NOTE: Check the communication circuit if the communication function of the Subaru Select Monitor does not function normally.
Record all DTCs and failure status information.

RESULT DESCRIPTION

Result	Go to
DTC is detected.	A
No DTC is detected	B

B: Perform the inspection by referring to "Fault in the airbag warning light".

A: Go to next step

Perform diagnosis

Use the list of diagnostic codes to determine the cause of the fault.
Perform inspection according to the diagnostic code.
Repair the cause of trouble.
Delete the diagnostic code.
Execute the check mode.
Confirm that no other DTC is detected.

RESULT DESCRIPTION

Result	Go to
DTC is detected.	A
No DTC is detected	B

B: Complete the diagnosis.

A: Go to next step

Perform steps (1) to (5) of Step 5.