Toyota Corolla (E120): Components
Other materials:
Circuit description
The variable valve timing (vvt) system includes the ecm, the oil control
valve (ocv) and the vvt controller.
The ecm sends a target ”duty–cycle” control signal to the ocv. This control
signal, applied to the ocv,
regulates the oil pressure supplied to the vvt controller. Camshaft timin ...
Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include OBD (On
Board Diagnostics) checks. The OBD system monitors the operation of the emission
control system.
If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere in the emission cont ...
Front wheel alignment
Adjustment
1. Inspect tire
2. Measure vehicle height
Vehicle height:
Measuring points:
a: ground clearance of front wheel center
b: ground clearance of lower suspension arm front
bolt center
c: ground clearance of axle beam set bolt center
d: ground clearance of rear wheel center
Not ...