See also:
Parameter:
Coolant temperature
Fault:
FMI 0 High fluid temperature. Insufficient cooling of the moderator or movement on hilly terrain with frequent use of the moderator.
FMI 4 Shorting the signal wire in the temperature sensor circuit to ground.
FMI 5 Shorting the signal wire in the temperature sensor circuit to ground or to a higher voltage.
FMI 13 Faulty retarder control unit.
Parameter:
Coolant pressure
Fault:
FMI 0 The voltage on the retarder unit from the sensor is between 3.6 and 4.6 V. The sensor is defective, the moderator cooling circuit is damaged or blocked.
FMI 3 The voltage on the retarder unit from the sensor is higher than 4.6 V. Closure of the wiring in the sensor circuit to a higher voltage or the sensor is faulty.
FMI 4 The voltage on the retarder unit from the sensor is below 0.4 V. The wiring in the sensor circuit is faulty or the sensor is faulty.
Parameter:
Oil temperature
Fault:
FMI 0 High oil temperature. Insufficient cooling of the moderator or movement on hilly terrain with frequent use of the moderator.
FMI 4 Shorting the signal wire in the temperature sensor circuit to ground.
FMI 5 Shorting the signal wire in the temperature sensor circuit to ground or to a higher voltage.
FMI 13 Faulty retarder control unit.
Parameter:
Decelerator Power Supply Voltage
Fault:
FMI 0 The supply voltage is above 33 V. The generator is faulty or the device for fast charging of batteries is connected without disconnecting from the car.
FMI 1 The supply voltage is below 18 V for a few seconds after starting the engine. Low battery charge, poor contact on power cable or ground.
Parameter:
Valve PWM retarder
Fault:
FMI 3 A short circuit in the PWM valve circuit to a higher voltage or the PWM valve is faulty.
FMI 4 A short in the PWM valve circuit is shorted to ground or the PWM valve is faulty.
FMI 5 An open circuit in the PWM valve or a PWM valve is faulty.
FMI 6 A short in the PWM valve circuit is shorted to ground or the PWM valve is faulty.
Parameter:
Pressure sensor power supply
Fault:
FMI 1 The voltage is between 0.5 and 4.5 V. The wiring in the sensor circuit is faulty or the sensor is faulty.
FMI 3 Voltage is higher than 5.5 V. Short circuit of wires between the pressure sensor and the moderator control unit to a higher voltage.
FMI 4 Faulty retarder control unit.
Parameter:
SAE J1939 data feed
Fault:
FMI 2 A large number of erroneous messages on the data channel. Breakage or partial damage to the data channel wires. Oxidized or damaged contacts in the connectors.
Parameter:
Program memory
Fault:
FMI 2 Software Error. The retarder control unit is not programmed or programmed with errors.
Parameter:
SAE J1708 data feed
Fault:
FMI 2 A large number of erroneous messages on the data channel. Breakage or partial damage to the data channel wires. Oxidized or damaged contacts in the connectors.
FMI 4 The retarder control unit cannot read the voltage change values. The closure of the data channel wires to ground.
FMI 9 Skipped a few messages on the data channel. The moderator control unit is in the process of programming, the data channel wiring is damaged or the contacts in the connectors are oxidized.
Parameter:
Gauge memory, EEPROM
Fault:
FMI 2 Software Error. Re-program the retarder control unit.
Parameter:
Valve PWM retarder
Fault:
FMI 13 Incorrect calibration value of the PWM valve in the retarder control unit. Replace control unit.
Parameter:
Air pressure
Fault:
FMI 0 The air pressure in the moderator is above 4.6 Bar . PWM valve defective.
FMI 3 High voltage in the circuit between the moderator unit and the pressure sensor. Shorting the signal or supply wire of the sensor to a higher voltage. The pressure sensor may be faulty.
FMI 5 An open in the sensor circuit or a short to ground in the sensor circuit.
Parameter:
Voltage +12 V. control unit (used to power the internal circuits of the control unit)
Fault:
FMI 0 The voltage is too high. Faulty wiring.
FMI 1 Voltage too low. Short to ground.
Parameter:
Voltage +5 V. (used to power the air pressure sensor)
Fault:
FMI 0 The voltage is too high. Short circuit to higher voltage.
FMI 1 Voltage too low. Short to ground.
Parameter:
Retarder control unit temperature
Fault:
FMI 0 The temperature of the retarder control unit is too high. Possible heat from an external heat source.
Parameter:
Valve PWM retarder
Fault:
FMI 3 Shorting the wires in the PWM valve circuit to a higher voltage or the PWM valve is faulty.
FMI 5 An open wire in the PWM valve circuit or a PWM valve is faulty.
FMI 6 Short circuit of wires in the circuit of the PWM valve to the ground or defective PWM valve.
Parameter:
Power Relay K05
Fault:
FMI 3 Short circuit of the relay control wire to a higher voltage.
FMI 6 Short circuit of relay control wire to earth or relay malfunction.
Parameter:
Data Link Disruption SAE J1939 with car control unit MID144
Fault:
FMI 9 The retarder control unit MID222 does not receive signals from the car control unit MID144 via the SAE J1939 data channel. Broken or partial damage to data wire between the blocks.
Parameter:
Data Link Disruption SAE J1939 with MID136 braking system control unit
Fault:
FMI 9 The retarder control unit MID222 does not receive signals from the MID136 braking system control unit via the SAE J1939 data channel. Broken or partial damage to data wire between the blocks.
Parameter:
DIEE signal
Fault:
FMI 3 Shorting the signal wire to a higher voltage.
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