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.)
3
Even when headlight switch is turned on, daytime screen does not change to night time screen. (Front
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 ACTION
Yes
Replace LCD unit (available at Panasonic service
center) or get it repaired at Panasonic service
center, then go to next step.
1*
• Turn headlight switch on.
• Measure voltage at the following
terminal of LCD unit connector (24-
pin):
Terminal 1V (TNS (+) signal)
• Is voltage 10 V or more ?
No
Repair wiring harness between LCD unit and TNS
relay, then go to next step.
Yes
Complete troubleshooting, then explain repairs to
customer.
2
• When headlight switch is turned on,
does daytime screen change to night
time screen?
No
Recheck malfunction symptoms, then repeat from
Step 1 if malfunction recurs.
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