Page text (OCR transcript)
BE–132
BODY ELECTRICAL SYSTEM – THEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM
Horn Relay Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, it causes the Tr in the ECU to switch on and off in approximately
0.2 sec. cycles. This switches the horn relay on and off, thus the horns blow (See the wiring diagram below).
In this condition, if any of the following operations is done, the Tr in the ECU goes off and the horn relay switches
off, thus stopping the horns from blowing:
(1) The front LH or RH door is unlocked with a key.
(2) The ignition switch is turned to ACC or ON position.
(3) Approximately 1 minute elapses.
WIRING DIAGRAM
T9
Theft Deterrent and
Door Lock ECU
R/B NO.2
HORN Relay
W
2 2 1 2 L-R 16 L-R 14 L-R HORN
IB2 IF2 24
3 2 L-B
L-R
Horn Switch
R/B No.2
HAZ-HORN
L-B
L-B
2A
1
B
Battery
Horn
N08546