Mazda MX-6 1998, Workshop Manual

Page: 1034 / 1282

TROUBLESHOOTING [THEFT-DETERRENT (KEYLESS ENTRY SECURITY) SYSTEM]
Horn does not sound but other warnings (headlight and turn light) are okay while alarm operates
TROUBLESHOOTING HINTS
Malfunction in theft-deterrent system operation circuit
• CPU malfunction
• Malfunction in wiring harness between horn relay and CPU
STEP
INSPECTION ACTION
Do horns sound with horn switch to on? Yes Go to next step.
No Inspect horn circuit.
Remove driver’s side front scuff plate.
Remove driver’s side front side trim.
Remove nut fixed in joint box.
Measure voltage at terminal 2A at CPU
connector with horn switch OFF.
Is voltage B+?
Yes Replace CPU.
c r 0 9-40 CPU REMOVAL/INSTALLATION
_ BACK SIDE
OF JOINT
BOX
ï ~
f®t
"
L_Î
No Repair wiring harness between horn relay and CPU.
r
20 2M 2K 2I 2G 2E 20
2A
?P
-
2J 2H 2F 2D 28
4
Headlight does not flash but other warnings (horn and turn light) are okay while alarm operate
TROUBLESHOOTING HINTS
Malfunction in theft-deterrent system operation circuit
• CPU malfunction
STEP ACTION
— Go to symptom troubleshooting of exterior lighting system.
tr 0 9 -0 1 J FOREWORD
0 9 -0 1 G -5