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.
2012 Infiniti M35hFACTORY OEM SERVICE PROCEDURE
Input/Output Signal Chart
INPUT SIGNAL ITEM
| Transmit sensor/unit | Signal name | Description |
|---|---|---|
| Crankshaft position sensor (POS) | Engine speed | Detects engine speed |
| Camshaft position sensor (PHASE) | Intake valve timing signal | Detect intake valve timing control solenoid valve position |
| Exhaust valve timing control position sensor | Exhaust valve timing signal | Detect exhaust valve timing control solenoid valve position |
| HPCM | Engine stop notice signal | Receives engine stop notice status |
| Engine stop command signal | Receives engine stop command status |
OUTPUT SIGNAL ITEM
| Reception unit | Signal name | Description |
|---|---|---|
| HPCM | Engine stop permit signal | Transmits an engine stop permit signal |
Factory Service Tools
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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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