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.

NOTE:

Using the following procedures, perform the key warning system troubleshooting.
*: Use the SSM4.

Bring in the car
Check battery voltage
1. Inspect the battery voltage.
  Standard voltage: 11 to 14V
  
  NOTE: If the voltage is 11 V or less, charge or replace the battery before proceeding to a next step.

CAN communication system check

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

RESULT DESCRIPTION

Result	Go to
Functioning properly	A
Not functioning properly	B

B: Go to "CAN communication system (How to troubleshoot)" (Refer to HOW TO TROUBLESHOOT ).

A: Go to the next step

Symptom table

RESULT DESCRIPTION

Result	Go to
No trouble is indicated in check list for interview	A
A trouble is indicated in check list for interview	B

B: Go to step 6.

A: Go to the next step below

General analysis and troubleshooting *
1. ECM terminals (Refer to ECM TERMINAL ARRANGEMENT )
2. Data monitor/active test (Refer to DATA MONITOR/ACTIVE TEST )
Repair or replace
Confirmation test
Complete