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.
2011 Infiniti M56 BaseFACTORY OEM SERVICE PROCEDURE
Component Function Check
WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR FUNCTION
WITH CONSULT
- Start engine.
- Check "MAP SENSOR" in "DATA MONITOR" mode with CONSULT.
Monitor Item Condition Values/Status MAP SENSOR - Engine: After warming up
- Selector lever: P or N position
- A/C switch: OFF
- No load
Idle Approx. 1.0 V 2, 000 rpm Approx. 1.35 V
WITHOUT CONSULT
- Start engine.
- Check the voltage between ECM harness connector and ground.
ECM Condition Voltage + - Connector Terminal Connector Terminal F110 67 E80 175 [Engine is running] - Warm-up condition
- Idle speed
1.2 V [Engine is running] - Warm-up condition
- Engine speed: 2, 000 rpm
1.5 V Is the inspection result normal?
YES: INSPECTION END
NO: Proceed to "DIAGNOSIS 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.