Toyota Corolla (E120): Diagnosis circuit

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Instrument panel/meter
Preparation Sst Recomended tools Equipment Seat Preparation Equipment Theft deterrent & door lock Preparation Recomended tools ...

Circuit description
While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruising overdrive may be prohibited temporarily under some conditions. The cruise control ecu sends o/d cut signals to the ecm as necessary and the ecm cancels overdrive shifting until ...

Inspection procedure
1 Check low pitched horn assy Connect the positive (+) lead from the battery to the terminal and negative (–) lead to the horn body, and check that the horn blows. 2 Check relay (marking: horn) Remove the relay from the engine room j/b.  check the horn relay conti ...