Camshaft Position Sensor
NOTE:
On ES300 and RX300, Camshaft Position (CMP) sensor is also referred to as a Variable Valve Timing (VVT) sensor. See VARIABLE VALVE TIMING SENSOR (ES300, GS400, LS400, RX300 & SC400) .
The camshaft sensor contains a pick-up coil. A signal plate has one tooth on its outer circumference and is mounted on the camshaft. As the camshaft rotates, a protrusion on the signal plate passes near the pick-up coil. This induces AC voltage in the pick-up coil. The ECM senses this voltage signal and interprets it as camshaft position.
The ECM uses input signal for determining ignition timing (spark advance) and for controlling fuel injection system, idle speed control system, heated oxygen sensor system and intake air control valve system. See CAMSHAFT POSITION SENSOR LOCATION table.
CAMSHAFT POSITION SENSOR LOCATION
| Application | Location |
|---|---|
| GS300 & SC300 | Left Rear Intake Side Of Cylinder Head |
| GS400, LS400, LX470 & SC400 | Mounted To Front Of Left Upper (No. 3) Timing Belt Cover |