D439E Service Manual 4. Fuel system
188
Camshaft Position Sensor
Inspection
TDC sensor senses the TDC (Top Dead Center) of
compression strokes of cylinder No 1 and 4, and
then it transforms it to pulse signals and then Inputs
it to ECU. Then, ECU sets the fuel injection
sequence based on the signals Crank angle sensor
senses each crank angle (piston position) and
transforms it to pulse signals and then inputs it to
ECU. Then, ECU calculates the engine speed based
on the signals and adjusts the fuel injection timing
and Ignition timing.
Wiring Harness Inspection
Refer to P0340 DTC Inspection procedure.
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