54-86
LIGHTING SYSTEM
Troubleshooting
2.
IGNITION SWITCH INPUT CIRCUIT
to
<From 1991 models>
Sub
fusible
Sub
fusible
link
ETACS
control unit
(electronic
control unit)
TSB Revision
Ignition Off Draw
Description of operation
With the ignition switch at the “ON” position, send HIGH-level
signals to
the
electronic control unit to
switch OFF the timer circuit and interrupt the dimmed-light condition.
Electronic control unit terminal voltage
the electronic control unit connector and check the wiring harness side.)
ECU terminal No.
Signal
Conditions
Terminal voltage
3
Ignition switch: “ON”
Ignition switch
OFF
o v
ON
Battery
positive voltage
Individual part check
Ignition switch . . . Refer to