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Home >> Infiniti >> 2011 >> M37 x >> Repair and Diagnosis >> External Pages >> Different car >> Section 287 (Engine Control System - Introduction) >> System Description >> System >> Air Conditioning Cut Control >> AIR CONDITIONING CUT CONTROL: System Description >> Input/Output Signal Chart
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Input/Output Signal Chart

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.
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor
Camshaft position sensor		 Engine speed(2) Air conditioner cut control IPDM E/R
↓
A/C relay
↓
Compressor
Engine coolant temperature sensor Engine coolant temperature
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage(2)
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
A/C auto amp. A/C ON signal(1)
A/C evaporator temperature(1)
Target A/C evaporator temperature(1)
Blower fan ON signal
Combination meter Vehicle speed(1)
(1) This signal is sent to the ECM via the CAN communication line.
(2) ECM determines the start signal status by the signals of engine speed and battery voltage.
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