Main Switch - Toyota 7M-GE Repair Manual

OPERATION
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The construction and operation of the cruise control system is the same as previous systems,
it is the same as that on the 1986 Celica ST 162 Series.) --
Main Switch
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Even though the Main Switch is in the ON position, if the Ignition Switch is turned off, the Main
Switch goes off at the same time. When the Ignition !&itch is turned on again, the Main Switch
remains off.
wer Indicator
Main Switch Assembly
OPERATION
1) Main Switch ON
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0
i
I. .,
With the Ignition Switch ON, if the Main
Switch is turned ON, Terminal @ is
grounded by Terminal @ through the
On Switch, Off Switch and Relay Coil.
The Relay Switch goes on and current
flows to Terminal 8.
Also, since current is flowing through
the Relay Coil through D,, even if the
Relay Switch is separated from the On
switch, it remains ON. (Self-hold Circtiit)
The Power Indicator Lamp Lights up.
2) Main Switch OFF
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When the Main Switch is ON, if the Off
Switch is pressed, the current flowing
from D1 is cut off and the flow of cur-
rent to the Relay Coil is stopped, causing
the Main Switch goes off.
Also, when the Ignition Switch is turned
OFF, the Relay Coil is no longer charged
and the Main Switch goes off.
Connector for Main Switch
IG. Sy;sr -
Light
Control Relay
Rheostat
ccs
Computer (+B)
Light Control Relay
Illumination
Rheostat
CCS Computer