Toyota Corolla (E120): Sfi system

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On–vehicle inspection
1. Inspection throttle body idle speed control valve assy Notice: it is impossible to check the resister value and the operation of isc valve by itself, because the isc valve has an ic circuit inside it, which transforms the duty signal from the ecm to the derive signal. After check ...

Tape is tangled due to incorrect tape speed or auto–reverse malfunction
Inspection procedure 1 Check for any foreign object Check for any foreign object. Check that no foreign material and troubles are detected in the radio receiver assembly cassette tape player. Standard: no foreign material and trouble detected. 2 Replace cassette tape with an ...

Source voltage drop
The srs is equipped with a voltage–increase circuit (dc–dc converter) in the airbag sensor assy center in case the source voltage drops. When the battery voltage drops, the voltage–increase circuit (dc–dc converter) functions to increase the voltage of the srs to normal voltage. ...