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MX-4101N SELF DIAG AND TROUBLE CODE 7 – 18
H2-05
External heating thermistor open
(TH_EX2)
(TH_EX2)
H3-00
Fusing section high temperature
trouble (TH_UM)
trouble (TH_UM)
H3-01
Fusing section high temperature
trouble (TH_LM)
trouble (TH_LM)
H3-02
Fusing section high temperature
trouble (TH_US)
trouble (TH_US)
H3-04
Fusing section high temperature
trouble (TH_EX1)
trouble (TH_EX1)
H3-05
Fusing section high temperature
trouble (TH_EX2)
trouble (TH_EX2)
H4-00
Fusing section low temperature
trouble (TH_UM_AD2)
trouble (TH_UM_AD2)
Trouble content
Detail
PCU
Cause
Thermistor trouble.
PCU PWB trouble.
Connection trouble of the connector and the
harness.
PCU PWB trouble.
Connection trouble of the connector and the
harness.
Check & Remedy
Replace the thermistor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the PCU PWB.
Check connection of the connector and the harness.
Trouble content
Detail
PCU
Cause
The fusing temperature exceeds the specified level.
Thermistor trouble.
PCU PWB trouble
Connection trouble of the connector and the
harness.
Power unit trouble.
Thermistor trouble.
PCU PWB trouble
Connection trouble of the connector and the
harness.
Power unit trouble.
Check & Remedy
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the power unit.
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the power unit.
Trouble content
Detail
PCU
Cause
The fusing temperature exceeds the specified level.
Thermistor trouble.
PCU PWB trouble.Harness and connector
connection trouble.
Power unit trouble.
Thermistor trouble.
PCU PWB trouble.Harness and connector
connection trouble.
Power unit trouble.
Check & Remedy
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the power unit.
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the power unit.
Trouble content
Detail
PCU
Cause
Thermistor trouble.
PCU PWB trouble.
Fusing section connector connection trouble.
Power unit trouble.
PCU PWB trouble.
Fusing section connector connection trouble.
Power unit trouble.
Check & Remedy
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the PCU PWB.
Check connection of the thermistor and the harness.
Replace the power unit.
heater lamp.
Use SIM14 to cancel the trouble.
Replace the PCU PWB.
Check connection of the thermistor and the harness.
Replace the power unit.
Trouble content
Detail
PCU
Cause
Non-contact thermistor trouble.
PCU PWB trouble.
Fusing section connector connection trouble.
Power unit trouble.
PCU PWB trouble.
Fusing section connector connection trouble.
Power unit trouble.
Check & Remedy
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the PCU PWB.
Check connection of the thermistor and the harness.
Replace the power unit.
heater lamp.
Use SIM14 to cancel the trouble.
Replace the PCU PWB.
Check connection of the thermistor and the harness.
Replace the power unit.
Trouble content
Detail
PCU
Cause
Thermistor trouble.
PCU PWB trouble.
Connection trouble of the connector and the
harness.
PCU PWB trouble.
Connection trouble of the connector and the
harness.
Check & Remedy
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Trouble content
Detail
PCU
Cause
The fusing temperature does not reach the specified
level within the specified time from turning ON the
power relay.
Thermistor trouble.
Heater lamp trouble.
PCU PWB trouble.
Thermostat trouble.
Connector, harness connection trouble.
Power unit trouble.
Interlock switch trouble.
level within the specified time from turning ON the
power relay.
Thermistor trouble.
Heater lamp trouble.
PCU PWB trouble.
Thermostat trouble.
Connector, harness connection trouble.
Power unit trouble.
Interlock switch trouble.
Check & Remedy
Replace the thermistor.
Replace the heater lamp.
Replace the PCU PWB.
Replace the thermostat.
Check connection of the connector and the harness.
Replace the power unit.
Replace the interlock switch.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the heater lamp.
Replace the PCU PWB.
Replace the thermostat.
Check connection of the connector and the harness.
Replace the power unit.
Replace the interlock switch.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
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