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.
2018 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE
Unit Inspection
- Inspection of IG2 relay (IG2)
- Measure the resistance between the terminals.
STANDARD VALUE RESISTANCE SPECIFICATIONInspection terminals Inspection conditions Standard value 3 - 5 When the battery voltage is not applied to the terminal 1 and terminal 2: 10 k Ξ© or more 3 - 5 When the battery voltage is applied to the terminal 1 and terminal 2: Less than 1 Ξ© - Inspection of EFI relay (EFI MAIN1)
- Measure the resistance between the terminals.
STANDARD VALUE RESISTANCE SPECIFICATIONInspection terminals Inspection conditions Standard value 3 - 5 When the battery voltage is not applied to the terminal 1 and terminal 2: 10 k Ξ© or more 3 - 5 When the battery voltage is applied to the terminal 1 and terminal 2: Less than 1 Ξ© - Inspection of EFI relay (EFI MAIN2)
- Measure the resistance between the terminals.
STANDARD VALUE RESISTANCE SPECIFICATIONInspection terminals Inspection conditions Standard value 3 - 5 When the battery voltage is not applied to the terminal 1 and terminal 2: 10 k Ξ© or more 3 - 5 When the battery voltage is applied to the terminal 1 and terminal 2: Less than 1 Ξ© - Inspection of EFI relay (EFI MAIN3)
- Measure the resistance between the terminals.
STANDARD VALUE RESISTANCE SPECIFICATIONInspection terminals Inspection conditions Standard value 3 - 5 When the battery voltage is not applied to the terminal 1 and terminal 2: 10 k Ξ© or more 3 - 5 When the battery voltage is applied to the terminal 1 and terminal 2: Less than 1 Ξ© - Inspection of INJ relay (INJ)
- Measure the resistance between the terminals.
STANDARD VALUE RESISTANCE SPECIFICATIONInspection terminals Inspection conditions Standard value 3 - 5 When the battery voltage is not applied to the terminal 1 and terminal 2: 10 k Ξ© or more 3 - 5 When the battery voltage is applied to the terminal 1 and terminal 2: Less than 1 Ξ© - Inspection of ETCS relay (ETCS)
- Measure the resistance between the terminals.
STANDARD VALUE RESISTANCE SPECIFICATIONInspection terminals Inspection conditions Standard value 3 - 5 When the battery voltage is not applied to the terminal 1 and terminal 2: 10 k Ξ© or more 3 - 5 When the battery voltage is applied to the terminal 1 and terminal 2: Less than 1 Ξ© - Inspection of F/PMP relay (C/OPEN)
- Measure the resistance between the terminals.
STANDARD VALUE RESISTANCE SPECIFICATION
| Inspection terminals | Inspection conditions | Standard value |
|---|---|---|
| 3 - 5 | When the battery voltage is not applied to the terminal 1 and terminal 2: | 10 k Ξ© or more |
| 3 - 5 | When the battery voltage is applied to the terminal 1 and terminal 2: | Less than 1 Ξ© |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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