54-88
LIGHTING SYSTEM
Troubleshooting
4. DOME LIGHT ACTIVATION CIRCUIT
to 1990
S u b
ETACS
control unit
unit)
4
OFF OFF
ON ON
ON
Dome light
Dome light
<From 1991 models>
Sub fusible link
Sunroof
To door switch
Dome light
ETACS
control
(electronic
control
unit)
1
To door switch
NOTE
Vehicles without theft-alarm system
Vehicles with theft-alarm system
Ignition Off Draw
Description of operation
When a door is opened while the dome light switch
is at the door-interlocked setting, the door switch is
grounded via
the
electronic
control
unit.
When, in that condition, the door is then closed,
the electronic control unit causes grounding, and
the dimmed-light function is activated.
Electronic control unit terminal voltage (status of the electronic control unit connector)
ECU
No.
Signal
Dome light signal
All
doors
closed
DOOR
Battery positive voltage
TSB Revision