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.
DTC P2402: Evaporative Emission System Leak Detection Pump Control Circuit High: Wiring Diagram
- Engine electrical system non-turbo model (without push button start) < Ref. to NON-TURBO MODEL (WITHOUT PUSH BUTTON START) , WIRING DIAGRAM, Engine Electrical System. >
- Engine electrical system non-turbo model (with push button start) < Ref. to NON-TURBO MODEL (WITH PUSH BUTTON START) , WIRING DIAGRAM, Engine Electrical System. >
| Step | Check | Yes | No |
|---|---|---|---|
1 CHECK HARNESS BETWEEN ECM AND LEAK CHECK VALVE ASSEMBLY CONNECTOR
.
|
Is the voltage 10 V or more? | Repair the short circuit to power in harness between ECM and leak check valve assembly connector. | Go to step 2 . |
2 CHECK LEAK CHECK VALVE ASSEMBLY
.
|
Is the vacuum pump of the leak check valve assembly OK? | Repair the poor contact in the leak check valve assembly connector. | Replace the leak check valve assembly. < Ref. to LEAK CHECK VALVE ASSEMBLY . > |
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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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