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
- INSPECT INTEGRATION RELAY NOTE:
- Some relays are built into the integration relay (unit: A). The integration relay cannot be disassembled. If there is a malfunction in the circuit of the integration relay, replace the integration relay.
- The internal circuit of the integration relay is as shown in the illustration. Inspect the integration relay using the following procedures.
- Measure the resistance of the C/OPN relay.
- Using an ohmmeter, measure the resistance between terminal.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Specified Condition 2B-5 - 2B-8 10 kΩ or higher - Connect the battery's positive (+) lead to terminals 2B-5 and negative (-) lead to terminal 2B-7. Using an voltmeter, measure the resistance between terminal.
Standard voltage
VOLTAGE SPECIFICATIONTester Connection Specified Condition 2B-7 - 2B-8 10 - 14V
- Using an ohmmeter, measure the resistance between terminal.
- Measure the resistance of the EFI MAIN relay.
- Remove the EFI fuse. Using an ohmmeter, measure the resistance between the terminals.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Specified Condition EFI fuse terminal 2 - 2A-8 10 kΩ or higher - Connect the battery's positive (+) lead to terminal 2A-6 and negative (-) lead to terminal 2A-7. Using an ohmmeter, measure the resistance between terminal.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Specified Condition EFI fuse terminal 2 - terminal 2A-8 Below 1 Ω
- Remove the EFI fuse. Using an ohmmeter, measure the resistance between the terminals.
- Measure the resistance of the EFI NO. 2 relay.
- Remove the F/PMP fuse. Using an ohmmeter, measure the resistance between the terminals.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Specified Condition F-PMP fuse terminal 2 - 2B-4 10 kΩ or higher - Connect the battery's positive (+) lead to terminal 2A-8 and negative (-) lead to terminal 2B-3. Using an ohmmeter, measure the resistance between the terminals.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Specified Condition F-PMP fuse terminal 2 - 2B-4 Below 1 Ω
- Remove the F/PMP fuse. Using an ohmmeter, measure the resistance between the terminals.
- Measure the resistance of the EFI INJ relay.
- Remove the INJ fuse. Using an ohmmeter, measure the resistance between the terminals.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Specified Condition INJ fuse terminal 2 - 2A-4 10 kΩ or higher - Connect the battery's positive (+) lead to terminal 2A-2 and negative (-) lead to terminal 2A-3. Using an ohmmeter, measure the resistance between the terminals.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Specified Condition INJ fuse terminal 2 - terminal 2A-4 Below 1 Ω
- Remove the INJ fuse. Using an ohmmeter, measure the resistance between the terminals.
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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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