Toyota Corolla (E120): Problem symptoms table

The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to troubleshoot the problem when a normal code is displayed in the diagnostic trouble code chart but the problem is still occurring. Numbers in the table indicate the order in which the circuits or parts should be checked.

Hint: when the problem is not detected by the diagnostic system even though the problem symptom is present, it may be that the problem is occurring outside the detection range of the diagnostic system.

Circuit inspection

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    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 ...

    Lubrication system
    *: The engine oil capacity is a reference quantity to be used when changing the engine oil. Warm up and turn off the engine, wait more than 5 minutes, and check the oil level on the dipstick. ■ Engine oil selection “Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use Toyo ...

    Overhaul
    1. Remove control shift lever bush Remove the control shift lever bush from the selecting bellcrank assy. 2. Remove selecting bellcrank dust cover no.1 Remove the selecting bellcrank dust cover no.1 From the selecting bellcrank assy. 3. Remove selecting bell crank no.2 ...