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 (for Sedan): Inspection: Inspection
- INSPECT INTEGRATION NO. 1 RELAY
- Inspect the EFI fuse.
- Inspect the EFI relay.
- Measure the resistance according to the value(s) in the table below.TEXT IN ILLUSTRATION
*1 Component without harness connected
(Integration Relay)Standard Resistance
Tester Connection Condition Specified Condition C1 - A4 Battery voltage not applied 10 kΩ or higher Battery voltage applied to terminals A2 and A3 Below 1 Ω C1 - A1 Always Below 1 Ω NOTE:While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.
If the result is not as specified, replace the integration relay.
- Measure the resistance according to the value(s) in the table below.
- Inspect the FAN NO. 1 relay.
- Measure the resistance according to the value(s) in the table below.TEXT IN ILLUSTRATION
*1 Component without harness connected
(Integration Relay)Standard Resistance
Tester Connection Condition Resistance B5 - B8 Battery voltage not applied 10 kΩ or higher Battery voltage applied to terminals B6 and B7 Below 1 Ω NOTE:While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.
If the result is not as specified, replace the integration relay.
- Measure the resistance according to the value(s) in the table below.
- Inspect the AM2 fuse.
- Inspect the IG2 relay.
- Measure the resistance according to the value(s) in the table below.TEXT IN ILLUSTRATION
*1 Component without harness connected
(Integration Relay)Standard Resistance
Tester Connection Condition Resistance C1 - B4 Battery voltage not applied 10 kΩ or higher Battery voltage applied to terminals B2 and B3 Below 1 Ω C1 - B1 Always Below 1 Ω If the result is not as specified, replace the integration relay.
- Measure the resistance according to the value(s) in the table below.
- Inspect the horn relay.
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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.
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