Toyota Corolla (E120): Circuit description

The wireless receiver receives a set/unset signal for the tvip system and sends the signal to the tvip ecu via the integration relay.

Wiring diagram

Inspection procedure

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    On–vehicle inspection
    1. Inspect pressure switch no.1. Magnetic clutch control: inspect pressure switch operation.  Set on the manifold gauge set.  Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (–) lead to terminal 1.  Check continuity between termin ...

    Check mode procedure
    Hint: hand–held tester only: compared to the normal mode, the check mode has more sensing ability to detect malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode. 1. Check mode procedure(using the hand–held tester) ...

    Clock assy
    Replacement 1. Remove console panel upper 2. Remove heater control knob 3. Remove instrument cluster finish panel 4. Remove clock assy Using a screwdriver, disengage the 4 claws, remove the clock as shown in the illustration. Hint: tape the screwdriver tip before use. ...