Toyota Corolla Repair Manual: Ignition switch circuit

Ecu power source circuit

Circuit description This circuit provides power to operate the tvip ecu. Wiring diagram Inspection procedure 1 Check fuse (ecu–b) Remove the fuse from the instrument panel j/b.  c ...

Circuit description

If the ignition switch is turned to the on position, battery positive voltage is applied to the switches, such as terminal ig of the ecu. Wiring diagram ...

Other materials:

Inspection procedure
1 Check side squib(rh) circuit(airbag sensor assy center – front seat airbag assy rh) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the front seat airbag assy (rh ...

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 timing co ...

Circuit description
When a misfire occurs in the engine, hydrocarbons (hc) enter the exhaust in high concentrations. If this hc concentration is high enough, there could be an increase in exhaust emissions levels. High concentrations of hc passing through the catalyst also cause to temperature of the catalyst to ...