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MID 146 Volvo FH Version 2 - Cabin climate control unit fault codes

See also: Volvo truck workshop manual free download

Error code

Parameter

Description

Cabin climate control unit

MID 146 PID 170 FMI 3

Cab temperature sensor.

The climate control unit registers the voltage in the temperature sensor circuit above 4.86 V. The sensor is not connected to the control unit. It is possible to short the signal or ground wire to a higher voltage.

MID 146 PID 170 FMI 4

Cab temperature sensor.

The climate control unit registers the voltage in the temperature sensor circuit below 0.7 V. The signal wire is shorted to ground or the sensor is faulty.

MID 146 PID 171 FMI 3

Outdoor temperature sensor.

The microclimate control unit registers the voltage in the temperature sensor circuit above 4.9 V. Closure of the signal or ground wire to a higher voltage. The sensor may be faulty.

MID 146 PID 171 FMI 4

Outdoor temperature sensor.

The climate control unit registers the voltage in the temperature sensor circuit below 0.55 V. The signal wire is shorted to ground or the sensor is faulty.

MID 146 SID 2 FMI 3

Air temperature sensor (located between the evaporator and the fan).

The climate control unit registers the voltage in the temperature sensor circuit above 4.86 V. The sensor is not connected to the control unit. It is possible to short the signal or ground wire to a higher voltage.

MID 146 SID 2 FMI 4

Air temperature sensor (located between the evaporator and the fan).

The climate control unit registers the voltage in the temperature sensor circuit below 0.24 V. The signal wire is shorted to ground or the sensor is faulty.

MID 146 SID 5 FMI 4

Stepper motor controls damper external air flow and recirculation.

The climate control unit registers a short to ground. Shorting the signal wire of an electric motor to a lower voltage or ground.

MID 146 SID 6 FMI 4

Stepper motor controls air distribution flaps.

The climate control unit registers a short to ground. Shorting the signal wire of an electric motor to a lower voltage or ground.

MID 146 SID 9 FMI 4

Stepper motor controls the air supply to bypass the heat exchanger.

The climate control unit registers a short to ground. Shorting the signal wire of an electric motor to a lower voltage or ground.

MID 146 SID 11 FMI 4

Clutch air conditioning compressor.

Shorting the signal wire to a lower voltage or ground circuit.

MID 146 SID 11 FMI 5

Clutch air conditioning compressor.

Broken wire mass of the compressor clutch or defective clutch.

MID 146 SID 12 FMI 3

Coolant flow control valve through heat exchanger.

Shorting the signal or ground wire to a higher voltage.

MID 146 SID 12 FMI 4

Coolant flow control valve through heat exchanger.

Shorting the signal wire to ground.

MID 146 SID 12 FMI 5

Coolant flow control valve through heat exchanger.

Broken power wire, ground, defective fuse   F32   or valve is faulty.

MID 146 SID 13 FMI 3

Air temperature sensor after the heat exchanger.

The climate control unit registers the voltage in the temperature sensor circuit above 4.9 V. The sensor is not connected to the control unit. It is possible to short the signal or ground wire to a higher voltage.

MID 146 SID 13 FMI 4

Air temperature sensor after the heat exchanger.

The climate control unit registers the voltage in the temperature sensor circuit below 0.24 V. The signal wire is shorted to ground or the sensor is faulty.

MID 146 SID 14 FMI 4

Micro-fan of the air temperature sensor in the cabin (combined with a temperature sensor).

Shorting the signal wire to a lower voltage or ground.

MID 146 SID 16 FMI 3

Stepper motors, first phase.

Shorting the signal wire of the corresponding phase of an electric motor to a higher voltage.

MID 146 SID 17 FMI 3

Stepper motors, second phase.

Shorting the signal wire of the corresponding phase of an electric motor to a higher voltage.

MID 146 SID 18 FMI 3

Stepper motors, third phase.

Shorting the signal wire of the corresponding phase of an electric motor to a higher voltage.

MID 146 SID 19 FMI 3

Stepper motors, fourth phase.

Shorting the signal wire of the corresponding phase of an electric motor to a higher voltage.

MID 146 SID 22 FMI 3

Refrigerant pressure sensor in the system.

The microclimate control unit registers a signal with a voltage higher than 4.5 V from the pressure sensor. The signal or ground wire is closed at a higher voltage.

MID 146 SID 22 FMI 4

Refrigerant pressure sensor in the system.

The climate control unit registers a signal with a voltage below 0.3 V from a pressure sensor. The signal wire is shorted to ground, there is a wire break between the unit and the sensor, or the sensor is not connected to the connector.

MID 146 SID 232 FMI 3

Power supply 5 V. Refrigerant pressure sensor in the system.

The climate control unit registers the sensor supply voltage above 5.5 V. Closing the signal or ground wire to a higher voltage.

MID 146 SID 232 FMI 4

Power supply 5 V. Refrigerant pressure sensor in the system.

The climate control unit registers a short to ground. Shorting the signal wire to a lower voltage or ground.

MID 146 SID 240 FMI 2

Program memory

Incorrect software, emergency interruption of the programming process, or the climate control unit is faulty.

MID 146 SID 250 FMI 2

Data feed SAE J1708.

Invalid information from other blocks. check fault codes in other control units.

MID 146 SID 250 FMI 3

Data feed SAE J1708.

The climate control unit registers the voltage above 4.86 V. The closure of the wires of the data channel to a higher voltage.

MID 146 SID 250 FMI 4

Data feed SAE J1708.

The climate control unit registers the voltage below 0.24 V. The closure of the wires of the data channel to ground.

MID 146 SID 250 FMI 12

Data feed SAE J1708.

Faulty data channel wires or faulty control unit.

MID 146 SID 253 FMI 2

Gauge memory   Eeprom

The programming of the block is incorrect or the memory chip is faulty in the control unit. Reprogram the cabin climate control unit. In extreme cases, replace the control unit.

MID 146 PSID 6 FMI 3

The main temperature sensor (located in the control unit and microclimate switches).

The climate control unit registers the voltage in the temperature sensor circuit above 4.95 V. Closing the signal or ground wire to a higher voltage. Replace climate control unit.

MID 146 PSID 6 FMI 4

The main temperature sensor (located in the control unit and microclimate switches).

The climate control unit registers the voltage in the temperature sensor circuit below 0.05 V. Closing the signal wire to ground. Replace climate control unit.

MID 146 PSID 7 FMI 3

Compensation temperature sensor ( located in the control unit and microclimate switches).

The climate control unit registers the voltage in the temperature sensor circuit above 4.95 V. Closing the signal or ground wire to a higher voltage. Replace climate control unit.

MID 146 PSID 7 FMI 4

Compensation temperature sensor (located in the control unit and microclimate switches).

The climate control unit registers the voltage in the temperature sensor circuit below 0.05 V. Closing the signal wire to ground. Replace climate control unit.

MID 146 PSID 8 FMI 4

Solar radiation sensor (located in the control unit and microclimate switches).

The climate control unit registers the voltage in the temperature sensor circuit below 0.05 V. Closing the signal wire to ground. Replace climate control unit.

MID 146 PSID 200 FMI 12

Data Link Disruption   SAE J1587 with engine control unit (MID128).

Communication with the engine control unit (MID128)   interrupted for more than 60 seconds. There is no information about the temperature of the coolant and engine speed. Short or broken data channel   SAE J1587.   Check the integrity of the data channel, check the trouble codes in the engine control unit.

MID 146 PSID 201 FMI 12

Data Link Disruption   SAE J1587 with car control unit (MID144).

Communication with vehicle control unit (MID144)   interrupted for more than 60 seconds. No information about the speed of the car.   Short or broken data channel   SAE J1587. Check the integrity of the data channel, check the trouble codes in the vehicle control unit.

MID 146 PSID 202 FMI 12

Data Link Disruption   SAE J1587 with dashboard control unit   (MID140)

Communication with the dashboard control unit (MID140)   interrupted for more than 60 seconds. No information about outdoor temperature.   Short or broken data channel   SAE J1587.   Check the integrity of the data channel, check the trouble codes in the dashboard control unit.

Comments: 1
  • #1

    FRED (Saturday, 12 September 2020 01:09)

    HI WHERE IS THE LOCATION OF Refrigerant Pressure sensor

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