MANUALS · FUEL [13] · страница 149 из 340 · Открыть оригинал PDF ↗

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IGNITION SWITCH-ST AND INHIBITOR SWITCH [A/T only]

Engine control unit connector

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OPERATION

The ignition switch-ST inputs a high signal to the
engine control unit while the engine is cranking:
The engine control unit provides fuel injection
control;etc ,at enginestartupbasedonthis
signal:

When the ignition switch is set to START;the
battery voltage at cranking is applied through the
ignition switch and inhibitor switch to the engine
control unit,whichdetects that the engine is
cranking:Incasetheselectorleverisin
positionother than the P/N range, the battery
voltage is not applied to the engine control unit:
The inhibitor switch converts the selector lever
position (whetherit is at the P/N range or at
others) into high /low voltage and inputs it to the
engine control unit, which then controls the idle
speed control servo based on this signal.

The battery voltage in the engine control unit is
applied through a resistor to the inhibitor switch_
When the selector lever is set to the P/N range
continuityis producedbetweentheinhibitor
switch terminal of the engine control unit and
earth through the starter motor, thereby making
the terminal voltage go low:

TROUBLESHOOTING HINTS

If the inhibitor switch harnessand individualpart
check have resulted normal but the inhibitor switch
output is abnormal, poorly adjusted control cable is
suspected.

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