B
32
08.06
CHAPTER
PAGE
ISSUE
ELECTRIC SYSTEM TROUBLESHOOTING
ENGLISH
SECTION 2
Lighting System
SECTION 2
B
- TROUBLESHOOTING
CHECKING SIGNALLING SYSTEM
HORN IS NOT WORKING
1.
Horn button
-
Disconnect six-way connector of left hand switch
-
Connect Tester “ ” to connector (1)
-
Press Horn button to activate horn
-
Check continuity as follows:
Terminal (+)
Grey cable (2)
Terminal (-)
Black cable (3)
Button pressed
Continuity
Button not pressed
No continuity
See “Checking connectors” on page 11
Comando SX
M
VR
VL
GR
N
+
ON
OFF
HORN
GR
R
L
VL
M
VR
TURN
N
+
+
/
1
2
3
COMPLIANT
2.
Check voltage level
-
Connect Tester (20V DC) to horn cables (1)
Terminal (+)
Blue cable (2)
Terminal (-)
Orange cable (3)
-
Turn key “ON”
-
Press Horn button to activate horn
-
Power measured must be 12.5 V
NOT COMPLIANT
NOT COMPLIANT
Faulty horn button
Replace left hand
switch
BL
AR
1
3
2
COMPLIANT
Replace horn