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.
Integration Relay: Inspection: Inspection
- INSPECT INTEGRATION RELAY
- EFI MAIN relay:
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Integration relay (2C-1) - Integration relay (2A-8) No battery voltage is applied across terminals 2A-6 and 2A-7 10 kΩ or higher Integration relay (2C-1) - Integration relay (2A-8) Battery voltage is applied across terminals 2A-6 and 2A-7 Below 1 Ω If the resistance is not as specified, replace the integration relay.
- Measure the resistance according to the value(s) in the table below.
- EFI No. 2 relay:
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Integration relay (2C-1) - Integration relay (2B-4) No battery voltage is applied across terminals 2B-2 and 2B-3 10 kΩ or higher Integration relay (1C-1) - Integration relay (2B-4) Battery voltage is applied across terminals 2B-2 and 2B-3 Below 1 Ω If the resistance is not as specified, replace the integration relay.
- Measure the resistance according to the value(s) in the table below.
- INJ relay:
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Integration relay (2C-1) - Integration relay (2A-4) No battery voltage is applied across terminals 2A-2 and 2A-3 10 kΩ or higher Integration relay (2C-1) - Integration relay (2A-4) Battery voltage is applied across terminals 2A-2 and 2A-3 Below 1 Ω If the resistance is not as specified, replace the integration relay.
- Measure the resistance according to the value(s) in the table below.
- C/OPN relay:
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Integration relay (2B-5) - Integration relay (2B-8) No battery voltage is applied across terminals 2B-6 and 2B-7. 10 kΩ or higher Integration relay (2B-5) - Integration relay (2B-8) Battery voltage is applied across terminals 2B-6 and 2B-7. Below 1 Ω If the resistance is not as specified, replace the integration relay.
- Measure the resistance according to the value(s) in the table below.
- EFI MAIN relay:
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.