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.
2004 Infiniti M45FACTORY OEM SERVICE PROCEDURE
5. Check Injectors
- Stop engine and then turn ignition switch ON.
- Check voltage between ECM terminals 5, 6, 7, 13, 14, 15, 16, 17 and ground with CONSULT-II or tester.
Voltage: Battery voltage
- Refer to WIRING DIAGRAM for Injectors.
OK or NG
- OK: GO TO 6.
- NG: Perform DIAGNOSTIC PROCEDURE .
Factory Service Tools
Use the Manual With the Right Hardware
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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.