Input/Output Signal Chart

2013 Nissan-Datsun Murano CrossCabrioletSECTION Input/Output Signal Chart
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed(2) Air conditioner cut control IPDM E/R
↓
Air conditioner 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
Combination meter Vehicle speed(1)
BCM Air conditioner ON signal(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.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.