3000GT VR-4 AWD V6-2972cc 3.0L DOHC MFI Twin Turbo (1998)
OPERATION
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The camshaft position sensor senses the top dead center on compression stroke of the No.1 converts it into a pulse signal and inputs it to the
engine control module, which then controls the fuel injection sequence, etc. based on the input signal.
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Power to the camshaft position sensor is supplied from the MFI relay and is grounded to the body. The camshaft position sensor generates a pulse
signal as it repeatedly connects and disconnects between 5 V voltage supplied from the engine control module and ground.
TROUBLESHOOTING HINTS
Hint 1: If the camshaft position sensor does not function correctly, correct sequential injection is not made so that the engine may stall, run
irregularly at idle or fail to accelerate normally.
Hint 2: If the sensor outputs a pulse signal when the ignition switch is turned ON (with the engine not running), a faulty camshaft position sensor
or engine control module is suspected.
INSPECTION
Using Oscilloscope
(1) Run the engine at an idle speed.
(2) Connect the probe to the oscilloscope pick-up point as shown in the circuit diagram and check the waveform.
HARNESS INSPECTION
