ETC Control Unit – The ETC (Electronic Temperature Control Unit) is the controller for the heater and air conditioning system (no automatic air conditioning system).
John Deere ETC fault codes / John Deere ETC diagnostic trouble codes
NOTE:This page only indicates the meaning of the fault codes. For complete troubleshooting information, see the technical manuals.
ETC 000168.03 (ETC 168.03)— Control Unit, Supply Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a supply voltage in excess of 16 volts (pin 22, lead 0402, ELX).
ETC 000168.04 (ETC 168.04)— Control Unit, Supply Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures a supply voltage of less than 9 volts (pin 22, lead 0402, ELX).
ETC 000628.12 (ETC 628.12)— Control Unit Internal Fault
This diagnostic trouble code is triggered if an electronic malfunction is registered in the control unit.
ETC 000630.02 (ETC 630.02)— Control Unit Internal Fault
This diagnostic trouble code is triggered if the control unit detects an EEPROM error.
ETC 000639.14 (ETC 639.14)— Vehicle CAN BUS, Very High Error Rate
The diagnostic trouble code is generated when the control unit receives too many incorrect CAN BUS messages or when it detects a general problem
ETC 000871.03 (ETC 871.03)— B130 Sensor for Refrigerant Pressure, Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a voltage in excess of 5 volts at the signal input for refrigerant pressure sensor (B130, lead 2019). This indicates a short to a supply lead somewhere in the circuit.
ETC 000871.04 (ETC 871.04)— B130 Sensor for Refrigerant Pressure, Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures 0 volts at the signal input for refrigerant pressure sensor (B130, lead 2019). This indicates
ETC 000871.13 (ETC 871.13)— B130 Sensor for Refrigerant Pressure, Refrigerant Pressure Out of Valid Range Low
This diagnostic trouble code is triggered if the control unit measures less than 1.7 bar (24.6 psi) at the refrigerant pressure sensor (B130, lead 2019). This indicates a problem with the refrigerant.
ETC 000876.00 (ETC 876.00)— M02 Compressor Clutch, Current Overload Protection Active at Power Module (HF) PC6
This diagnostic trouble code is triggered if power module (HF) PC6 measures a total amperage in excess of 40 amps at the A1, C1 and D1 outputs. The following functions are monitored together and may trigger additional diagnostic trouble codes that affect the current overload protection:
• Output A1: M02 compressor clutch, diagnostic trouble code ETC 000876.00.
• Output C1: E27 beacon light, diagnostic trouble code BCU 002386.00.
• Output D1: E20/R and E20/L worklights on cab frame (right and left), diagnostic trouble code BCU 523691.00.
• Output D1: E36R and E36L xenon (HID) worklights on cab frame (right and left), diagnostic trouble code BCU 523691.00.
This indicates a short to ground or a defective component in one of the monitored circuits.
ETC 000876.01 (ETC 876.01)— M02 Compressor Clutch, Power Supply Fault at Power Module (HF) PC6
This diagnostic trouble code is generated if, when compressor clutch (M02) is switched on, power module (HF) PC6 measures less than 3 volts at the supply voltage for the compressor clutch output (lead 0732).
ETC 000876.04 (ETC 876.04)— M02 Compressor Clutch On, Current Too High at Power Module (HF) PC6
This diagnostic trouble code is triggered if, when compressor clutch (M02) is switched on, power module (HF) PC6 measures in excess of 30 amps at the compressor clutch output (lead 2023). This indicates a short to ground in the circuit.
ETC 000876.05 (ETC 876.05)— M02 Compressor Clutch On, No Current Present at Power Module (HF) PC6
This diagnostic trouble code is triggered if, when compressor clutch (M02) is switched on, power module (HF) PC6 measures less than 350 mA at the compressor clutch output (lead 2023). This indicates that the circuit is open.
ETC 000876.09 (ETC 876.09)— M02 Compressor Clutch,Incorrect CAN BUS Message from ETC (Power Module (HF) PC6)
This diagnostic trouble code is generated if there is a problem transferring data between power module (HF) PC6 and the ETC control unit. Reception of one, several or all of the CAN messages transmitted by the ETC to power module (HF) PC6 is intermittent or nonexistent (intermittent reception could be due to a loose wire).
ETC 000876.12 (ETC 876.12)— M02 Compressor Clutch Off, Current Present at Power Module (HF) PC6
This diagnostic trouble code is triggered if, with compressor clutch (M02) switched off, power module (HF) PC6 measures in excess of 1 amp at the compressor clutch output (lead 2023). This indicates a short in
ETC 000876.19 (ETC 876.19)— M02 Compressor Clutch, Incorrect CAN BUS Message (Power Module (HF) PC6)
This diagnostic trouble code is triggered if the output for switching the compressor clutch is energized by more than one control unit.
ETC 000923.00 (ETC 923.00)— M07/M10 Fan Motor, Current Overload Protection Active at Power Module (HF) PC6
This diagnostic trouble code is triggered if power module (HF) PC6 measures a total amperage in excess of 40 amps at one of the fan motor outputs (B1 and/or C3). This indicates a short to ground or a defective component in one of the monitored circuits.
ETC 000923.01 (ETC 923.01)— M07/M10 FanMotor, Power Supply Fault at Power Module (HF) PC6
This diagnostic trouble code is generated if, when fan motors (M07 and M10) are switched on, power module (HF) PC6 measures less than 3 volts at the supply voltage for one or both fan motor outputs. This indicates a problem with the supply voltage for the fan motor outputs (lead 0752 and/or lead 0762).
ETC 000923.04 (ETC 923.04)— M07/M10 Fan Motor On, Current Too High at Power Module (HF) PC6
This diagnostic trouble code is triggered if, when fan motors (M07 and M10) are switched on, power module (HF) PC6 measures in excess of 30 amps at one or both fan motor outputs (lead 2043 and/or lead 2047). This indicates a short to ground in the relevant circuit. ETC 000923.09 — M07/M10 Fan Motor, Incorrect CAN BUS Message from ETC (Power Module (HF) PC6) This diagnostic trouble code is generated if there is a problem transferring data between power module (HF) PC6 and the ETC control unit. Reception of one, several or all of the CAN messages transmitted by the ETC to power module (HF) PC6 is intermittent or nonexistent (intermittent reception could be due to a loose wire).
ETC 000923.12 (ETC 923.12)— M07/M10 Fan Motor Off, Current Present at Power Module (HF) PC6
This diagnostic trouble code is triggered if, with fan motors (M07 and M10) switched off, power module (HF) PC6 measures in excess of 1 amp at one or both fan motor outputs (lead 2043 and/or 2047). This indicates a short in the circuit or an internal fault in the power module. The diagnostic trouble can be triggered in addition to diagnostic trouble code ETC 000923.01, if there is a problem with the voltage supply for the fan motor outputs. Diagnostic trouble code ETC 000923.01 must be processed first.
ETC 000923.19 (ETC 923.19)— M07/M10 Fan Motor, Incorrect CAN BUS Message (Power Module (HF) PC6)
This diagnostic trouble code is triggered if the outputs for switching the fan motors are energized by more than one control unit.
ETC 001079.03 (ETC 1079.03)— 5volt Power Supply, Voltage Too High
This diagnostic trouble code is triggered if the voltage measured at the positive lead (lead 2093) of the power supply to the 5volt components (refrigerant pressure sensor B130, heater valve B131 and motor for adjusting the air distribution flaps B132) is above 5 volts. This indicates that the circuit is shorted to a positive supply lead or there is an internal interruption at the control unit.
ETC 001079.04 (ETC 1079.04)— 5volt Power Supply, Voltage Too Low
This diagnostic trouble code is triggered if the voltage measured at the positive lead (lead 2093) of the power supply to the 5volt components (refrigerant pressure sensor B130, heater valve B131 and motor for adjusting the air distribution flaps B132) is less than 0.5 volts. This indicates a short to ground in the circuit.
ETC 001546.03 (ETC 1546.03)— B131 Heater Valve (Potentiometer), Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a voltage in excess of 5 volts at the signal input of the potentiometer (heater valve B131, lead 2038). This indicates that circuit is shorted to a supply lead or is open.
ETC 001546.04 (ETC 1546.04)— B131 Heater Valve (Potentiometer), Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures 0 volts at the signal input for the heater valve positioning potentiometer (B131, lead 918). This indicates a short to ground in the circuit.
ETC 001547.03 (ETC 1547.03)— B129 Sensor for Evaporator Core Temperature, Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a voltage in excess of 5 volts at the signal input for evaporator core temperature sensor (B129, lead 2018). This indicates that the circuit is shorted to a supply lead or is open.
ETC 001547.04 (ETC 1547.04)— B129 Sensor for Evaporator Core Temperature, Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures 0 volts at the signal input for evaporator core temperature sensor (B129, lead 2018). This indicates a short to ground in the circuit.
ETC 001549.03 (ETC 1549.03)— B131 Heater Valve (Adjusting Motor), Voltage Too High
This diagnostic trouble code is triggered if the control unit measures excessive voltage at motor connecting leads 2016 and/or 2027 of heater valve (B131). This indicates that the circuit is shorted.
ETC 001549.04 (ETC 1549.04)— B131 Heater Valve (Adjusting Motor), Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures too low a voltage at motor connecting leads 2016 and/or 2027 of heater valve (B131). This indicates that the circuit is grounded.
ETC 001549.07 (ETC 1549.07)— B131 Heater Valve, Fault
This diagnostic trouble code is triggered if the control unit receives a valid position signal from heater valve potentiometer (B131), but the heater valve cannot be moved to its desired position via the motor’s connecting leads. This indicates a mechanical fault at the heater valve or an open line at the motor’s connecting lines.
ETC 001549.13 (ETC 1549.13)— B131 Heater Valve, Not Calibrated
This diagnostic trouble code is triggered if the heater valve is found to have an invalid calibration, or is not yet calibrated.
ETC 001552.03 (ETC 1552.03)— Temperature Control, Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a voltage in excess of 5 volts at the signal input of the temperature control. This indicates that the internal circuit of the control unit is shorted to a supply lead or is open.
ETC 001552.04 (ETC 1552.04)— Temperature Control, Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures 0 volts at the signal input of the temperature control. This indicates a short to ground in the internal circuit of the control unit.
ETC 001553.03 (ETC 1553.03)— Fan Speed Control, Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a voltage in excess of 5 volts at the signal input of the fan speed control. This indicates that the internal circuit of the control unit is shorted to a supply lead or is open.
ETC 001553.04 (ETC 1553.04)— Fan Speed Control, Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures 0 volts at the signal input of the fan speed control. This indicates a short to ground in the internal circuit of the control unit.
ETC 002000.09 (ETC 2000.09)— Incorrect CAN BUS Message, Coolant Temperature from ECU
This diagnostic trouble code is generated when a data transfer problem occurs between the ECU and ETC. Reception of the CAN message regarding coolant temperature is intermittent or nonexistent (intermittent reception could be due to a loose wire).
ETC 002156.09 (ETC 2156.09)— Incorrect CAN BUS Message, Information from Power Module (HF) PC6
This diagnostic trouble code is generated if there is a problem transferring data between power module (HF) PC6 and the ETC control unit. Reception of one, several or all of the CAN messages transmitted by power module (HF) PC6 is intermittent or nonexistent (intermittent reception could be due to a loose wire).
ETC 522343.00 — R17 Resistor at Heated Rear Window, Current Overload Protection Active at Power Module (HF) PC6
This diagnostic trouble code is triggered if power module (HF) PC6 measures an amperage in excess of 40 amps at the output for heated rear window resistor (R17). This indicates that circuit is shorted to ground or that there is a defective component in the circuit.
ETC 522343.01 — R17 Resistor at Heated Rear Window, Power Supply Fault at Power Module (HF) PC6
This diagnostic trouble code is generated if, when rearwindow heater is switched on, power module (HF) PC6 measures less than 3 volts at the supply voltage for the rearwindow heater output (lead 0742).
ETC 522343.04 — R17 Resistor at Heated Rear Window On, Current Too High at PowerModule (HF) PC6
This diagnostic trouble code is triggered if, when rearwindow heater is switched on, power module (HF) PC6 measures in excess of 30 amps in lead 2031. This indicates a short to ground in the circuit.
ETC 522343.05 — R17 Resistor at Heated Rear Window On, No Current Present at Power Module (HF) PC6
This diagnostic trouble code is triggered if, when rearwindow heater is switched on, power module (HF) PC6 measures less than 350 mA at the output of resistor (R17; for heated rear window) (lead 2031). This indicates that the circuit is open.
ETC 522343.09 — R17 Resistor at Heated Rear Window, Incorrect CAN BUS Message from ETC (Power Module (HF) PC6)
This diagnostic trouble code is generated if there is a problem transferring data between power module (HF) PC6 and the ETC control unit. Reception of one, several or all of the CAN messages transmitted by the ETC to power module (HF) PC6 is intermittent or nonexistent (intermittent reception could be due to a loose wire).
ETC 522343.12 — R17 Resistor at Heated Rear Window Off, Current Present at Power Module (HF) PC6
This diagnostic trouble code is triggered if, with rearwindow heater switched off, power module (HF) PC6 measures in excess of 1 amp at the output of resistor (R17; for heated rear window) (lead 2031). This indicates a short in the circuit or an internal fault in the power module.
ETC 522343.19 — R17 Resistor at Heated Rear Window, Incorrect CAN BUS Message (Power Module (HF) PC6)
This diagnostic trouble code is triggered if the output for switching resistor (R17; for heated rear window) is energized by more than one control unit.
ETC 523848.03 — B132 Adjusting Motor for Air Distribution (Potentiometer), Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a voltage in excess of 5 volts at the signal input of the potentiometer for the position of the air distribution flaps (adjusting motor B132 for air distribution, lead 2017). This indicates that the circuit is shorted to a supply lead or is open.
ETC 523848.04 — B132 Adjusting Motor for Air Distribution (Potentiometer), Voltage Too Low
This diagnostic trouble code is triggered if the control unit measures 0 volts at the signal input of the potentiometer for the position of the air distribution flaps (adjusting motor B132 for air distribution, lead 2017). This indicates a short to ground in the circuit.
ETC 523848.05 — B132 Adjusting Motor for Air Distribution, Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low an amperage at adjusting motor connecting leads 2028 and/or 2029. This indicates that the circuit is shorted.
ETC 523848.06 — B132 Adjusting Motor for Air Distribution, Current Too High
This diagnostic trouble code is triggered if the control unit measures too high an amperage at adjusting motor connecting leads 2028 and/or 2029. This indicates a short to ground in the circuit.
ETC 523848.07 — B132 Adjusting Motor forAir Distribution, Fault
This diagnostic trouble code is triggered if the control unit receives a valid position signal from the potentiometer of the air distribution adjusting motor, but the adjusting motor cannot be moved to its desired position via the motor’s connecting leads. This indicates a mechanical fault at the air distribution or an open line at the motor’s connecting lines.
ETC 523848.13 — B132 Adjusting Motor for Air Distribution, Not Calibrated
This diagnostic trouble code is triggered if the air distribution adjusting motor is found to have an invalid calibration, or is not yet calibrated.
ETC 523979.05 — S139 Switch for Heated Rear Window, Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low an amperage at the signal input of the indicator light in the rearwindow heater switch (S139, lead 2021). This indicates an interruption in the circuit or, on tractors without the optional ”heated rear window”, an incorrect entry at input address ETC036.
ETC 523979.07 — S139 Switch for Heated Rear Window, Fault
This diagnostic trouble code is triggered if the control unit receives the engagement signal of the rearwindow heater switch for too long a period of time (S139, lead 2013). This indicates that the switch is jammed or defective, or that there is a problem in the circuit.
ETC 524203.03 — NonExistent Function Activated
This diagnostic trouble code is triggered if the control unit recognizes an open circuit when a nonexistent function is activated in address ETC026.
ETC 600006.13 — Diagnostic Trouble Code Not Known
This diagnostic trouble code is triggered by the CommandCenter (DTI) when the DTI receives an ETC diagnostic trouble code via the CAN BUS that is not stored in the DTI memory. This ”general” diagnostic trouble code enables the CommandCenter (DTI) to display information relating to this unknown ETC diagnostic trouble code.