Mazda MX-6 1998, Workshop Manual, Page: 1057 / 1282

TROUBLESHOOTING [EXTERIOR LIGHTING SYSTEM]
STEP IPECTION ACTION
Measure voltage at terminal 31 at CPU
connector C of wiring harness.
Is voltage 0 V?
3I
X
3C 3A
.31 3
h
1 3F
J2
d
J
W 6 U 9 0 1 W X 5
Yes Replace CPU.
c r 0 9-40 CPU REMOVAL/INSTALLATION
No Go to step 9.
Remove column cover.
Measure voltage at terminal 2E at light switch
(headlight switch) connector of wiring harness.
Is voltage
5 V?
Yes Go to next step.
No Repair wiring harness between CPU and light switch
(headlight switch).
^ f I 2 e I 2 8 1 2 a 1
W 6 U 9 0 1 W X 6
10 Inspect light switch (headlight switch).
D- 0 9 -1 8 LIGHT SWITCH INSPECTION
Is light switch (headlight switch) okay?
Yes Replace CPU.
rr
0 9-40 CPU REMOVAL/INSTALLATION
No Replace light switch (headlight switch).
n-r 0 9-18 LIGHT SWITCH REMOVAL/INSTALLATION
9 License plate light does not illuminate
TROUBLESHOOTING HINTS
Malfunction in license plate light ground circuit
© License plate light does not illuminate
• Malfunction in wiring harness between license plate light and ground
Malfunction in license plate light operation circuit
© License plate light does not illuminate
• License plate light bulb malfunction
• Malfunction in wiring harness between TNS relay and license plate light
STEP
INSPECTION
ACTION
1
Inspect license plate light bulb. Yes Go to next step.
Is bulb okay?
No Replace license plate light bulb.
0 9 -0 1 J - 1 7