Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    Check short circuit
    If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b). Check the resistance with the body ground.  Disconnect connectors a and c and measure the resistance between terminals 1 and 2 ...

    Heater control & accessory assy
    Replacement 1. Remove console panel upper 2. Remove instrument cluster finish panel 3. Remove heater control & accessory assy Release the 2 fitting claws and pull out the heater control & accessory assy. Using a screwdriver, open the claw of the cable clamp and dis ...

    Inspection
    1. Charcoal canister assy Visually check the charcoal canister for cracks or damage. Inspect the charcoal canister operation.  Plug the vent port with the cap.  While holding the purge port closed, blow air (1.76 Kpa, 18 gf/cm2, 0.26 Psi) into the evap port and ...