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TROUBLESHOOTING
3) If R DEF Sensor has trouble
Bad contact of connector/ insert correctly
Is MAIN PCB
Connector CN30 to CN76 inserted
correctly?
Is R DEF Sensor
unit normal?
Is the voltage between
MAIN PCB Connector CN30#8(Sky-blue) and
REG1, HEAT SINK normal?
Is the input voltage of IC01
MICOM #74 normal?
Start
NO
YES
YES
YES
YES
Replace the temperature sensor
NO
Check the contact of PCB & Wire Terminal correctly.
NO(0.6V > Measurement < 4.6V)
Check the iced-solder, solder bridging,
disturbed solder. Replace the PCB
NO
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
** Measuring point of resistance value according to
Sensor **
R-DEF : CN30#8 CN76#1 measuring
resistance value
** 0: Short trouble / : Open trouble
Sensor MICOM/Connector Number
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #74,
CN30-"8"(Sky-blue) and REG1, HEAT SINK from
PCB typical Ground part are similar.
Check the measure on the SENSOR
MARKING #5(R313) due to the SMD MICOM
Checking method of R Sensor resistance
CN30#7(Sky-blue) CN76#1(Gray)
- Compare the temperature table after the
measure.
DATA1.
Temperature table
ERROR Code
Refer to circuit diagram in the manual
R DEF
Connector Cn30#8(Sky-blue) to REG1
HEAT-SINK PCB common Ground
Checking method of R DEF Sensor voltage
- Measure the voltage of Sensor Check Point #5(IC01 MICOM #74)
or CN30#8(Sky-blue)
REG1, HEAT SINK.
- Compare the temperature table after the measure. Measuring
voltage of CN30#8(Sky-blue)
REG1, HEAT SINK are below.
typical PCB Ground
REG1 HEAT-SINK
2¢(-17¡) is recommended 38¢(3¡) is recommended
Start
YES
YES
YES