MID150 ECS – Deciphering of diagnostic trouble codes of Volvo pneumatic suspension
See also:
MID 150 PID 152
Parameter:
Number of ECS control unit restarts
Fault:
FMI 12 Restarting the system due to an internal software failure.
MID 150 SID 1
Parameter:
Electromagnetic valve air suspension front axle
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 2
Parameter:
Electromagnetic valve air suspension front axle
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 3
Parameter:
Drive Solenoid Valve (Right Side)
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 4
Parameter:
Solenoid valve of the leading axis (left side)
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 5
Code
SID 5
Parameter:
Electromagnetic valve of the additional bridge (the second leading axis)
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 7
Parameter:
Electromagnetic valve of the leading axis (central, common for two sides)
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 8
Parameter:
Electromagnetic valve of the additional bridge (central)
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 8
Parameter:
Solenoid valve driven axle (blocking valve leading, additional axis)
Fault:
FMI 5 Break of a wire of food, management. Shorting control wire to ground. The solenoid valve may be faulty.
FMI 6 Control wire short to positive or defective solenoid valve.
MID 150 SID 9
Parameter:
Solenoid valve of the driven axle (exhaust)
Fault:
FMI 5 Break of a wire of food, management. Shorting control wire to ground. The solenoid valve may be faulty.
FMI 6 Control wire short to positive or defective solenoid valve.
MID 150 SID 10
Parameter:
Solenoid valve of the driven axle (axle lift air spring)
Fault:
FMI 5 Break of a wire of food, management. Shorting control wire to ground. The solenoid valve may be faulty.
FMI 6 Control wire short to positive or defective solenoid valve.
MID 150 SID 10
Parameter:
Electromagnetic valve of the additional bridge (a pneumatic spring of raising of an additional axis)
Fault:
FMI 5 Broken wire power or ground. The solenoid valve may be faulty.
FMI 6 Strong current or short to ground. Short to power lead to ground wire or defective solenoid valve.
FMI 7 Mechanical failure of the solenoid valve. Valve components jammed in open or closed position. Before replacing the valve, check for air leaks and verify that the air pressure sensor reads in the air springs of the front axle.
MID 150 SID 17
Parameter:
Front axle air suspension level sensor
Fault:
FMI 2 Damaged level sensor, short circuit of the signal wire to the power wire or break in the ground wire is damaged. Possible level sensor malfunction.
FMI 3 The signal voltage at the ECS unit’s contact from the level sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire. Breakage of the ground wire. Possible level sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the level sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken power or signal wire. Possible level sensor malfunction.
FMI 7 Damaged level sensor, short circuit of the signal wire to the power wire or break in the ground wire is damaged. Possible level sensor malfunction.
MID 150 SID 18
Parameter:
Rear axle air suspension level sensor (right)
Fault:
FMI 2 Damaged level sensor, short circuit of the signal wire to the power wire or break in the ground wire is damaged. Possible level sensor malfunction.
FMI 3 The signal voltage at the ECS unit’s contact from the level sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire. Breakage of the ground wire. Possible level sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the level sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken power or signal wire. Possible level sensor malfunction.
FMI 7 Damaged level sensor, short circuit of the signal wire to the power wire or break in the ground wire is damaged. Possible level sensor malfunction.
MID 150 SID 19
Parameter:
Rear axle air suspension level sensor (left)
Fault:
FMI 2 Damaged level sensor, short circuit of the signal wire to the power wire or break in the ground wire is damaged. Possible level sensor malfunction.
FMI 3 The signal voltage at the ECS unit’s contact from the level sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire. Breakage of the ground wire. Possible level sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the level sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken power or signal wire. Possible level sensor malfunction.
FMI 7 Damaged level sensor, short circuit of the signal wire to the power wire or break in the ground wire is damaged. Possible level sensor malfunction.
MID 150 SID 22
Parameter:
Air pressure sensor in air springs (front axle)
Fault:
FMI 2 Broken wire mass sensor. Shorting the signal wire to the power supply wire. Probably faulty sensor.
FMI 3 The signal voltage at the ECS unit contact from the pressure sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire. Breakage of the ground wire. Possible pressure sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the pressure sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken signal wire or sensor power wire. Possible pressure sensor failure.
FMI 7 Water freezing or partial contamination in mains or other air suspension components. Shorting the signal wire to power supply or a broken ground wire.
MID 150 SID 24
Parameter:
Air pressure sensor in air springs (drive axle, right)
Fault:
FMI 2 Broken wire mass sensor. Shorting the signal wire to the power supply wire. Probably faulty sensor.
FMI 3 The signal voltage at the ECS unit contact from the pressure sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire. Break wire mass. Possible pressure sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the pressure sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken signal wire or sensor power wire. Possible pressure sensor failure.
FMI 7 Water freezing or partial contamination in mains or other air suspension components. Shorting the signal wire to power supply or a broken ground wire.
MID 150 SID 25
Parameter:
Air pressure sensor in air springs (drive axle, left)
Fault:
FMI 2 Broken wire mass sensor. Shorting the signal wire to the power supply wire. Probably faulty sensor.
FMI 3 The signal voltage at the ECS unit contact from the pressure sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire. Breakage of the ground wire. Possible pressure sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the pressure sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken signal wire or sensor power wire. Possible pressure sensor failure.
FMI 7 Water freezing or partial contamination in mains or other air suspension components. Shorting the signal wire to power supply or a broken ground wire.
MID 150 SID 25
Code
Sid 25
Parameter:
Drive Axle Load Sensor
Fault:
FMI 3 Shorting the signal wire to the power supply. A broken ground or defective load sensor.
FMI 4 Shorting the signal wire to ground. Break signal or power wires. The sensor may be faulty.
MID 150 SID 26
Parameter:
Air pressure sensor in air springs (additional axis)
Fault:
FMI 2 Broken wire mass sensor. Shorting the signal wire to the power supply wire. Probably faulty sensor.
FMI 3 The signal voltage at the ECS unit contact from the pressure sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire . Breakage of the ground wire. Possible pressure sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the pressure sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken signal wire or sensor power wire. Possible pressure sensor failure.
FMI 7 Water freezing or partial contamination in mains or other air suspension components. Shorting the signal wire to power supply or a broken ground wire.
MID 150 SID 28
Parameter:
Air pressure sensor in air springs (additional axle lift)
Fault:
FMI 2 Broken wire mass sensor. Shorting the signal wire to the power supply wire. Probably faulty sensor.
FMI 3 The signal voltage at the ECS unit contact from the pressure sensor exceeds 4.5 V. Closure of the signal wire to the power supply wire. Break wire mass. Possible pressure sensor malfunction.
FMI 4 The signal voltage at the ECS unit contact from the pressure sensor is less than 0.5 V. Shorting of the signal wire to ground. Broken signal wire or sensor power wire. Possible pressure sensor failure.
FMI 7 Water freezing or partial contamination in mains or other air suspension components. Shorting the signal wire to power supply or a broken ground wire.
MID 150 SID 33
Parameter:
Air suspension control panel
Fault:
FMI 7 The ECS unit registers that one of the switches on the air suspension control panel is in two positions simultaneously. A short to ground between the console and the ECS unit. The air suspension control panel may be faulty.
MID 150 SID 34
Parameter:
Air Suspension Control Solenoid Relay
Fault:
FMI 7 Mechanical fault relay.
MID 150 SID 231
Parameter:
SAE J1939 data feed
Fault:
FMI 2 Malfunction in the wiring or data channel connectors between the ECS unit and other control units.
MID 150 SID 240
Parameter:
Program memory
Fault:
FMI 13 Programming error or internal malfunction of the air suspension control unit. Reprogramming, in the event of a recurring DTC, replace the control unit.
MID 150 SID 250
Parameter:
SAE J1708 data feed
Fault:
FMI 2 Malfunction in the wiring or data channel connectors between the ECS unit and other control units. Probably faulty control unit.
MID 150 SID 253
Parameter:
Gauge memory, EEPROM
Fault:
FMI 0, 1, 2, 13, 14 Incorrectly programmed parameters. Check the correctness of the parameters set. Reprogram the ECS unit.
MID 150 PSID 1
Parameter:
Supply voltage of air suspension level sensors
Fault:
FMI 3 Supply voltage of level sensors is higher than 5.5 V. Short circuit of the sensor power supply wire to a higher voltage.
FMI 4 The power supply voltage level sensors below 4.5 V. Closure of the power wire to ground.
MID 150 PSID 2
Parameter:
Supply voltage of air pressure sensors in air springs
Fault:
FMI 3 The supply voltage of the pressure sensors is higher than 5.5 V. Closure of the sensor power supply wire to a higher voltage.
FMI 4 The supply voltage of the pressure sensors is below 3.5 V. Shorting of the power wire to ground.
FMI 14 The supply voltage of the pressure sensors is higher than 16 V. Closure of the power supply of the sensors to a higher voltage.
MID 150 PSID 3
Parameter:
Switch lifting, lowering an additional axis (trolley)
Fault:
FMI 7 The air suspension control unit registers that the switch is in two positions simultaneously. Short circuit between the ECS unit and the switch or the switch is faulty. Also check the fuses and relays.
MID 150 PSID 4
Parameter:
Air pressure sensor, trailer, right, front
Fault:
FMI 2 Shorting the signal wire to ground, broken ground wire, or the sensor is faulty.
FMI 3 The voltage of the sensor signal wire exceeds 4.5 V. Shorting of the signal wire to the power wire, a break in the ground wire or a sensor is faulty.
FMI 4 Closing the signal wire to ground. Broken power or signal wire. The sensor may be faulty.
FMI 7 Low pressure measured by the sensor. The air lines are clogged, the signal wire is shorted to electrical power, a ground wire is broken, or the sensor is faulty.
MID 150 PSID 5
Parameter:
Air pressure sensor, trailer, left, front
Fault:
FMI 2 Shorting the signal wire to ground, broken ground wire, or the sensor is faulty.
FMI 3 The voltage of the sensor signal wire exceeds 4.5 V. Shorting of the signal wire to the power wire, a break in the ground wire or a sensor is faulty.
FMI 4 Closing the signal wire to ground. Broken power or signal wire. The sensor may be faulty.
FMI 7 Low pressure measured by the sensor. The air lines are clogged, the signal wire is shorted to electrical power, a ground wire is broken, or the sensor is faulty.
MID 150 PSID 6
Parameter:
Air pressure sensor, trailer, right, rear
Fault:
FMI 2 Shorting the signal wire to ground, broken ground wire, or the sensor is faulty.
FMI 3 The voltage of the sensor signal wire exceeds 4.5 V. Shorting of the signal wire to the power wire, a break in the ground wire or a sensor is faulty.
FMI 4 Closing the signal wire to ground. Broken power or signal wire. The sensor may be faulty.
FMI 7 Low pressure measured by the sensor. The air lines are clogged, the signal wire is shorted to electrical power, a ground wire is broken, or the sensor is faulty.
MID 150 PSID 7
Parameter:
Air pressure sensor, trailer, left, rear
Fault:
FMI 2 Shorting the signal wire to ground, broken ground wire, or the sensor is faulty.
FMI 3 The voltage of the sensor signal wire exceeds 4.5 V. Shorting of the signal wire to the power wire, a break in the ground wire or a sensor is faulty.
FMI 4 Closing the signal wire to ground. Broken power or signal wire. The sensor may be faulty.
FMI 7 Low pressure measured by the sensor. The air lines are clogged, the signal wire is shorted to electrical power, a ground wire is broken, or the sensor is faulty.
MID 150 PSID 8
Parameter:
Load indicator, calibration memory
Fault:
FMI 13 Load pointer not calibrated or not calibrated correctly.
FMI 14 Load indicator not calibrated correctly.
MID 150 PSID 9
Parameter:
Additional axis solenoid valve (TRIDEM)
Fault:
FMI 5 Broken power wire, ground, or valve is faulty.
FMI 6 Short to ground or faulty valve.
FMI 7 The solenoid valve does not fill or empty the air springs, and the air pressure sensor in the air springs does not register any changes. Seizure of internal valve components, severe air leakage, or defective air pressure sensor.
MID 150 PSID 10
Parameter:
Solenoid valve lifting device additional axis (TRIDEM)
Fault:
FMI 5 Broken power wire, ground, or valve is faulty.
FMI 6 Short to ground or faulty valve.
FMI 7 The solenoid valve does not fill or empty the air springs, and the air pressure sensor in the air springs does not register any changes. Seizure of internal valve components, severe air leakage, or defective air pressure sensor.
MID 150 PSID 11
Parameter:
Central solenoid valve additional axis (TRIDEM)
Fault:
FMI 5 Broken power wire, ground, or valve malfunctioning.
FMI 6 Short to ground or faulty valve.
FMI 7 Solenoid valve does not fill or empty the air springs, and the air pressure sensor in the air springs does not register any changes. Seizure of internal valve components, severe air leakage, or defective air pressure sensor.
MID 150 PSID 12
Parameter:
Air pressure sensor, additional axis (TRIDEM)
Fault:
FMI 2 Shorting the signal wire to the power supply, a broken ground wire, or a sensor is faulty.
FMI 3 The signal voltage from the pressure sensor exceeds 4.5 V. Closing the signal wire to the power supply, a ground wire is broken, or the sensor is faulty.
FMI 4 The signal voltage from the pressure sensor is below 0.5 V. Shorting of the signal wire to ground, break in the signal wire, break in the power wire, or sensor is faulty.
FMI 7 Low pressure measured by sensor. Low pressure measured by the sensor. The air lines are clogged, the signal wire is shorted to electrical power, a ground wire is broken, or the sensor is faulty. The solenoid valve may be faulty.
MID 150 PSID 13
Parameter:
Air pressure sensor in the pneumatic springs of the lift of the additional axis (TRIDEM)
Fault:
FMI 2 Shorting the signal wire to the power supply, a broken ground wire, or a sensor is faulty.
FMI 3 The signal voltage from the pressure sensor exceeds 4.5 V. Closing the signal wire to the power supply, a ground wire is broken, or the sensor is faulty.
FMI 4 The signal voltage from the pressure sensor is below 0.5 V. Shorting of the signal wire to ground, break in the signal wire, break in the power wire, or sensor is faulty.
FMI 7 Low pressure measured by sensor. Low pressure measured by the sensor. The air lines are clogged, the signal wire is shorted to electrical power, a ground wire is broken, or the sensor is faulty. The solenoid valve may be faulty.
MID 150 PSID 14
Parameter:
Additional Axle Control Switch (TRIDEM)
Fault:
FMI 7 The air suspension control unit registers that the switch is in two positions simultaneously. Short circuit between the ECS unit and the switch or the switch is faulty.
MID 150 PSID 15
Parameter:
Calibration memory, load cell, front axle
Fault:
FMI 13 Incorrect sensor calibration or sensor has never been calibrated. Perform calibration.
MID 150 PSID 16
Parameter:
Additional switches
Fault:
FMI 7 The air suspension control unit registers that the switch is in two positions simultaneously. Short circuit between the ECS unit and the switch or the switch is faulty.
MID 150 PSID 17
Parameter:
Level sensor, front axle load limit
Fault:
FMI 2 Damaged level sensor thrust. Shorting the signal wire to the power supply, a broken ground wire, or a sensor is faulty.
FMI 3 The signal voltage from the height sensor exceeds 4.5 V. Shorting of the signal wire to the power supply, break in the ground wire, or the sensor is faulty.
FMI 4 The signal voltage from the level sensor is below 0.5 V. Shorting of the signal wire to ground, break in the power wire, break in the signal wire, or the sensor is faulty.
FMI 7 The height value displayed by the sensor is too small. Damaged level sensor, short circuit of the signal wire to the power supply, break in the ground wire, or the sensor is faulty.
MID 150 PSID 200
Parameter:
Data Link Disruption SAE J1939 with engine control unit MID128
Fault:
FMI 9 The air suspension control unit MID150 does not receive signals from the engine control unit MID128 via the SAE J1939 data channel. Breakage or partial damage to the wires of the data channel between the blocks.
MID 150 PSID 201
Parameter:
Data Link Disruption SAE J1939 with car control unit MID144
Fault:
FMI 9 The air suspension control unit MID150 does not receive signals from the vehicle control unit MID144 via the SAE J1939 data channel. Breakage or partial damage to the wires of the data channel between the blocks.
MID 150 PSID 202
Parameter:
Data Link Disruption SAE J1939 with dashboard control unit MID140
Fault:
FMI 9 The MID150 air suspension control unit does not receive signals from the MID140 dashboard control unit via the SAE J1939 data channel. Breakage or partial damage to the wires of the data channel between the blocks.
MID 150 PSID 206
Parameter:
Data Link Disruption SAE J1939 with a MID222 retarder control unit
Fault:
FMI 9 The air suspension control unit MID150 does not receive signals from the retarder control unit MID222 via the SAE J1939 data channel. Breakage or partial damage to the wires of the data channel between the blocks.
MID 150 PSID 210
Parameter:
Data Link Disruption SAE J1939 with MID216 outdoor lighting control unit
Fault:
FMI 9 The air suspension control unit MID150 does not receive signals from the MID216 outdoor lighting control unit via the SAE J1939 data channel. Breakage or partial damage to the wires of the data channel between the blocks.
MID 150 PSID 215
Parameter:
Data Link Disruption SAE J1939 with MID184 rear axle control unit
Fault:
FMI 9 The air suspension control unit MID150 does not receive signals from the additional rear axle control unit MID184 via the SAE J1939 data channel. Breakage or partial damage to the wires of the data channel between the blocks.
MID 150 PSID 227
Parameter:
Data Link Disruption SAE J1939 with MID185 air dryer control unit
Fault:
FMI 9 The air suspension control unit MID150 does not receive signals from the air dryer control unit MID185 via data channel SAE J1939. Breakage or partial damage to the wires of the data channel between the blocks.
