Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2019 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE
How To Troubleshoot
- Bring in the car
- Phenomenon check
- Checking the diagnostic codes (Refer to
CHECKING/CLEARING DIAGNOSTIC CODES )
- DTC check
- Clearing diagnostic code
- Rechecking the diagnostic codes
RESULT DESCRIPTIONResult Go to Code output present A No code output B B: Go to Step 5
A: Go to next step
- List of diagnostic codes (main inspection parts) or troubleshooting for each codeRESULT DESCRIPTION
Result Go to Fault location confirmed A Fault location not confirmed B A: Go to Step 7
B: Go to Step 6
- Inspection with SSM4 (Refer to
DATA MONITOR/ACTIVE TEST )
- Perform the ECM data monitor and the active test.
RESULT DESCRIPTIONResult Go to Fault location not confirmed A Fault location confirmed B B: Go to Step 7
A: Go to next step
- Inspection of the ECM terminal voltage and circuit (Refer to ECM TERMINAL ARRANGEMENT )
- Repair faulty parts
- Checking the diagnostic codes (Refer to
CHECKING/CLEARING DIAGNOSTIC CODES )
Completed
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.