DL06K Interim Tire-4 Diesel Engine Disassembly and Reassembly of Major Components
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3.4.15. Camshaft speed sensor
z The camshaft controls the engine's
intake and exhaust valves. It turns at
half the speed of the crankshaft.
When a piston travels in the direction
of TDC, the camshaft position
determines whether it is in the
compression phase with subsequent
ignition, or in the exhaust phase. This
information cannot be generated from the crankshaft position during the starting
phase. During normal engine operation on the other hand, the information
generated by the crankshaft sensor suffices to define the engine status. In other
words, this means that if the camshaft sensor should fail while the vehicle is
being driven, the ECU still receives information on the engine status from the
crankshaft sensor.
3.4.16. Accelerator pedal sensor
z The accelerator pedal sensor transmitted the driver’s acceleration input to the
ECU. A voltage is generated across the potentiometer in the accelerator-pedal
sensor as a function of the accelerator-pedal setting. Using a programmed
characteristic curve, the pedal's position is then calculated from this voltage.
No. ECU PIN Description
1 2.68 CAS POS
2 2.67 CAS NEG
3 2.69 Shield
EK4OM084
CAM SHAFT SPEED SENSOR
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