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
Engine Control System - Introduction
- Precaution
- Precautions
- Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
- Precaution for Procedure without Cowl Top Cover
- Precautions For Xenon Headlamp Service
- Precautions Concerning On-board Servicing of Hybrid Systems
- On Board Diagnostic (OBD) System of Engine and A/T
- General Precautions
- Precautions
- Preparation
- System Description
- Component Parts
- Engine Control System
- ENGINE CONTROL SYSTEM: Component Parts Location
- Air Fuel Ratio Sensor 1
- Air Fuel Ratio Sensor 1 Heater
- Battery Current Sensor
- Brake Switch
- Camshaft Position Sensor (PHASE)
- Cooling Fan
- Crankshaft Position Sensor (POS)
- ECM
- Electric Throttle Control Actuator
- Engine Coolant Temperature Sensor
- Engine Oil Pressure Sensor
- Engine Oil Temperature Sensor
- EVAP Canister Purge Volume Control Solenoid Valve
- EVAP Canister Vent Control Valve
- EVAP Control System Pressure Sensor
- Exhaust Valve Timing Control Position Sensor
- Exhaust Valve Timing Control Solenoid Valve
- Fuel Injector
- Fuel Level Sensor
- Fuel Pump
- Fuel Tank Temperature Sensor
- Heated Oxygen Sensor 2
- Heated Oxygen Sensor 2 Heater
- Ignition Coil
- Intake Air Temperature Sensor
- Intake Valve Timing Control Solenoid Valve
- Knock Sensor
- Manifold Absolute Pressure Sensor
- Malfunction Indicator Lamp
- Mass Air Flow Sensor
- Refrigerant Pressure Sensor
- Throttle Control Motor
- Throttle Control Motor Relay
- Throttle Position Sensor
- Engine Control System
- Structure And Operation
- System
- On Board Diagnostic (OBD) System
- Diagnosis System (ECM)
- Diagnosis Description
- DIAGNOSIS DESCRIPTION: 1st Trip Detection Logic and Two Trip Detection Logic
- DIAGNOSIS DESCRIPTION: DTC and Freeze Frame Data
- DIAGNOSIS DESCRIPTION: Counter System
- Relationship Between Mil, 1ST Trip DTC, And Detectable Items
- Counter System Chart
- Relationship Between MIL, DTC, 1st Trip DTC and Driving Patterns for "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- Explanation for Driving Patterns for "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- Relationship Between MIL, DTC, 1st Trip DTC and Driving Patterns Except For "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- Explanation for Driving Patterns Except for "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- DIAGNOSIS DESCRIPTION: Driving Pattern
- DIAGNOSIS DESCRIPTION: System Readiness Test (SRT) Code
- DIAGNOSIS DESCRIPTION: Permanent Diagnostic Trouble Code (Permanent DTC)
- DIAGNOSIS DESCRIPTION: Malfunction Indicator Lamp (MIL)
- On Board Diagnosis Function
- CONSULT Function
- Diagnosis Description
- Component Parts
- Ecu Diagnosis Information
- Wiring Diagram
- Basic Inspection
- DTC/Circuit Diagnosis
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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