SENSOR - CAMSHAFT POSITION
DESCRIPTION
The camshaft position sensor (2) is mounted on the cylinder head cover toward the rear of the engine. The camshaft sensor utilizes a non contact method on one segment of the camshaft to record the camshaft position. When the ECM receives the signal from this sensor, it can then detect TDC of cylinder number one. The signal from the camshaft sensor is only required during engine starting. Injection timing is synchronized by means of the camshaft signal and the crankshaft signal.
OPERATION
On the camshaft sensor's signal line, a high signal corresponds to a voltage of 0-5V. If the segment machined into the exhaust camshaft sprocket is positioned opposite the camshaft sensor, the camshaft signal is low, approximately 0V. This signal is used by the engine control module (ECM) for detecting ignition TDC of cylinder 1 as the engine rotates. If no signal is supplied by the camshaft position sensor, the vehicle will not start because cylinder order can not be detected. If the signal is lost while the engine is running the vehicle will continue to run until shut off.
REMOVAL
1. Disconnect negative battery cable.
2. Remove engine cover
3. Disconnect camshaft position sensor (1) electrical connector.
4. Remove retaining bolt, seal and remove sensor.
INSTALLATION
1. Install camshaft position sensor (1) and tighten bolt to 10.8 N·m (95 in lbs.).
2. Reconnect electrical connector.
3. Install engine cover.
4. Reconnect negative battery cable.