Mazda RX-8 Manual page 1994

NO.3 EVEN WHEN HEADLIGHT SWITCH IS TURNED ON, DAYTIME SCREEN DOES
NOT CHANGE TO NIGHT TIME SCREEN. (FRONT AND REAR COMBINATION
LIGHTS OPERATE NORMALLY.)
Even when headlight switch is turned on, daytime screen does not change to night time screen. (Front
3 and rear combination lights operate normally.)
TROUBLESHOOTING HINTS
Malfunction in TNS (+) signal line of LCD unit
•
LCD unit malfunction
Malfunction in wiring harness between LCD unit and TNS relay
Diagnostic procedure
STEP INSPECTION
Turn headlight switch on.
•
Measure voltage at the following
•
1*
terminal of LCD unit connector (24-
pin):
Terminal 1V (TNS (+) signal)
Is voltage 10 V or more ?
•
When headlight switch is turned on,
•
2
does daytime screen change to night
time screen?
ACTION
Replace LCD unit (available at Panasonic service
Yes center) or get it repaired at Panasonic service
center, then go to next step.
Repair wiring harness between LCD unit and TNS
No
relay, then go to next step.
Complete troubleshooting, then explain repairs to
Yes
customer.
Recheck malfunction symptoms, then repeat from
No
Step 1 if malfunction recurs.
(w) RX-8 Body
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