Toyota Corolla (E210): Maintenance and care

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Inspection procedure
Hint: hand–held tester only: narrowing down the trouble area is possible by performing ”a/f control” active test (heated oxygen sensor or other trouble areas can be distinguished). Perform active test using hand–held tester (a/f control). Hint: ”a/f control” is the active te ...

Circuit description
When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...

Light control switch circuit
Wiring diagram Inspection procedure 1 Check headlamp dimmer switch assy (light control switch) 2 Check wire harness (tvip ecu  light control switch) Disconnect the tvip ecu and light control switch connectors.  check the continuity between the terminals of the tvip e ...