(DEF-thermistor system diagnosis)
Turn power OFF. Reopen door and re-energize.
(Buzzer beeps continuously)
Power OFF
Replace DEF-thermistor.
Replace main PWB.
OK
NG
NG
and .
EE 03 / EH 63
EE 04 / EH 64
(Ambient air temperature - thermistor system diagnosis)
Replace LCD-PWB.
Ambient air
temperature thermistor
is installed on
LCD-PWB.
(Defrosting diagnosis)
EE 07
OK?
Replace main PWB.
Replace fuse Assy .
Replace
defrost heater.
NO
YES
NO
YES
YES
NO
YES
NO
Forced defrosting (Measurement is impossible when
DEF-thermistor is set at 10°C or higher because
defrosting ends immediately)
After approx. 15 sec., the voltage
measured across
and of CN1
on the main PWB is equal to supplied
voltage? (e.g. 240 V)
Disconnect CN1 from the main PWB. Measure the
resistance between
and of CN1 on the wiring.
Resistance of 3P connector on E.V.
cover K is normal?
Check defrost heater wiring for loose
connection or disconnection.
Check cause of defrosting failure
· Check door packing
· Check mounting seal of E.V. cover Assy
2P connector on E.V. cover
Assy is carrying current?
[
3
]
[
4
]
[
5
]
Remove 4P connector (flat) from
E.V. cover Assy and measure the
thermistor resistance between
OK
Check the Def-thermistor
system wiring
See CHAPTER 4. (Heater resistance)
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