Toyota Celica 2005 Repair Manual page 1352

Horn Circuit
CIRCUIT DESCRIPTION
The horn is connected to and activated by the body ECU.
WIRING DIAGRAM
Engine Room J/B
1 HORN
2A
B−R
FL MAIN
Battery
2005 CELICA (RM1131U)
DIAGNOSTICS
HORN Relay
2
1 2
2D
21
3
5
2F
H5
Horn
(High)
− BODY CONTROL SYSTEM
(*1)
3
A
L−B
IE5
L−B
G−Y
L−B
(*2)
G−Y
1 1
H6
Horn
(Low)
1351
Body ECU
J8
J/C
14
A
B6
HORN
L−B
(*1)
A
(*1)
L−B
1
C16
Horn
SW
*1: w/ Door Lock Control
*2: w/o Door Lock Control
DI−1151
DI2A3−11
I13765