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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    Entire combination meter does not operate
    Wiring diagram Inspection procedere 1 Check fuse Check that continuity exists of dome fuse.  check that continuity exists of gauge fuse.  check that continuity exists of am1 fuse. 2 Inspect combination meter assy Check continuity.  Disconnect the ” ...

    Seat belt warning lamp for driver’s seat does not operate
    Wiring diagram Inspection procedure 1 Check combination meter assy Ground terminal c9–12 on the combination meter side. check that the warning lightlights up. Ok: warning light lights up. 2 Inspect front seat inner belt assy lh Disconnect the front seat inner belt ...

    Circuit description
    The throttle pressure that is applied to the primary regulator valve (which modulates the line pressure) causes the solenoid valve slt, under electronic control, to precisely and minutely modulate and generate the line pressure according the extent of the accelerator pedal depressed or the o ...