TROUBLESHOOTINGTROUBLESHOOTING
3) If R Sensor has trouble3) If R Sensor has trouble
Bad contact of Bad contact of
connector/ insert correctlyconnector/ insert correctly
Connector CN30 and CN76 insertedConnector CN30 and CN76 inserted
Is the voltage betweenIs the voltage between
MAIN PCB Connector CN30 - “6”(White) andMAIN PCB Connector CN30 - “6”(White) and
REG1-GND normal?REG1-GND normal?
Is the input voltage ofIs the input voltage of
IC01 MICOM #5 normal?IC01 MICOM #5 normal?
Replace the temperature sensorReplace the temperature sensor
Recheck the wire connection partRecheck the wire connection part
NO(0.6V > Measurement < 4.6V)NO(0.6V > Measurement < 4.6V)
Check the iced-solder, solderCheck the iced-solder, solder
bridging, disturbed solder.bridging, disturbed solder.
No trouble with PCB and temperature sensor.No trouble with PCB and temperature sensor.
Recheck the bad contact of Recheck the bad contact of
the connection.the connection.
** Measuring point of resistance value according to** Measuring point of resistance value according to
CN76-"1" measuring resistance valueCN76-"1" measuring resistance value
: Short trouble /: Short trouble /
: Open trouble: Open trouble
Sensor MICOM/Connector numberSensor MICOM/Connector number
easured between 4easured between 4
Measuring voltage IC01 MICOM #5,Measuring voltage IC01 MICOM #5,
CN30 - “6”(White) andCN30 - “6”(White) and
from PCB typical Ground part are similar.from PCB typical Ground part are similar.
Check the measure on the Check the measure on the
voltage of Resistance,voltage of Resistance,
R311 due to the SMD MICOMR311 due to the SMD MICOM
Checking method of R Sensor resistanceChecking method of R Sensor resistance
CN30 - “6”(White)CN30 - “6”(White)
CN76-"1"(Gray) Compare theCN76-"1"(Gray) Compare the
temperature table after measurment.temperature table after measurment.
Refer to circuit diagram in the manualRefer to circuit diagram in the manual
Connector CN30 - “6”(White) toConnector CN30 - “6”(White) to
REG1-GND PCB typical GroundREG1-GND PCB typical Ground
Checking method of R Sensor resistanceChecking method of R Sensor resistance
- Measure the - Measure the
voltage of Resistance R311(IC01 MICOMvoltage of Resistance R311(IC01 MICOM
#5) on PCB or CN30 - “6”(White)#5) on PCB or CN30 - “6”(White)
Measuring voltage of CN30 - “6”(White)Measuring voltage of CN30 - “6”(White)
are as below.are as below.
PCB Typical GroundPCB Typical Ground