Toyota Corolla (E120): Electronically controlled transmission communication circuit

Inspection procedure

Circuit description

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 ...

Replacement
Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove instrument panel sub–assy lower Remove the screw from the glove compartment door stopper sub–assy.  pull the instrument panel sub–assy lower to remove it. 4. Separate passenger airbag co ...

Inspection procedure
Hint: start the inspection from step 1 in case of using the hand–held tester and start from step 2 in case of not using the hand–held tester. 1 Read value of hand–held tester(skid control sensor) Check that there is no difference between the speed value output from the speed sensor ...