Abbreviations

	OBD - Onboard diagnostics
	WABCO ATR-E (ATC)
	The following describes the possible current and stored faults for Addresses 7, 8, A, E and F.

	Address 7 Current fault: Meaning of the fault code   Possible current fault:   FC   ECU pin number   Fault description   30   13   Compartment sensor front   50   12   Temperature sensor on air outlet wall heater bottom front right   60   25   Temperature sensor on air outlet wall heater bottom left side   80   5/17   Water valve wall heater bottom left front   85   4/16   Water valve, wall heater bottom front right
	Stored fault: Meaning of bar indication
	Possible stored faults (missing segment in bar indication, for example see picture):   Segment   ECU pin number   Fault description   16   13   Compartment sensor front   12   12   Temperature sensor on air outlet wall heater bottom front right   10   25   Temperature sensor on air outlet wall heater bottom left side   6   5/17   Water valve wall heater bottom left front   5   4/16   Water valve, wall heater bottom front right

 

	Address 8 Current fault: Meaning of the fault code   Possible current fault:   FC   ECU pin number   Fault description   30   13   Compartment sensor rear   40   3   Switched output, fresh air ventilation valves   45   2   Switched output, air mixture ventilation   50   12   Temperature sensor on air outlet, roof, left   55   11   Icing sensor (only for climate control system)   60   25   Temperature sensor on air outlet, roof, right   80   5/17   Water valve, roof, right   85   4/16   Water valve, roof, left
	Stored fault: Meaning of bar indication
	Possible stored faults (missing segment in bar indication, for example see picture):   Segment   ECU pin number   Fault description   16   13   Compartment sensor rear   14   3   Switched output, fresh air ventilation valves   13   2   Switched output, air mixture ventilation   12   12   Temperature sensor on air outlet, roof, left   11   11   Icing sensor (only for climate control system)   10   25   Temperature sensor on air outlet, roof, right   6   5/17   Water valve, roof, right   5   4/16   Water valve, roof, left

 

	Address F Current fault: Meaning of the fault code   Possible current fault:   FC   ECU pin number   Fault description   35   23   Coolant temperature sensor (for water heater)   40   3   Switched output, condenser blower   45   2   Switched output, compressor coupling   50   12   Temperature sensor on air outlet wall heater bottom rear right   60   25   Temperature sensor on wall heater air outlet   80   5/17   Water valve, middle bottom right   85   4/16   Water valve, wall heater bottom rear right
	Stored fault: Meaning of bar indication
	Possible stored faults (missing segment in bar indication, for example see picture):   Segment   ECU pin number   Fault description   15   23   Coolant temperature sensor (for water heater)   14   3   Switched output, condenser blower   13   2   Switched output, compressor coupling   12   12   Temperature sensor on air outlet wall heater bottom rear right   10   25   Temperature sensor on wall heater air outlet   6   5/17   Water valve, middle bottom right   5   4/16   Water valve, wall heater bottom rear right

 

	Address E Current fault: Meaning of the fault code   Possible current fault:   FC   ECU pin number   Fault description   10   --   Checksum fault in EEPROM   35   21   Water heater: Economy control line   40   3/4   Motor actuator, air volume, windscreen   45   5/6   Motor actuator, air volume, footwell   50   7/8   Motor actuator, bleed valve   55   22/23   Switched output, fresh air/recirculation valves   60   13/20   Water heater   75   35   Air outlet temperature sensor, driver's seat: Short circuit or open circuit   80   24/25   Driver's seat water valve   85   34   Outside temperature sensor:   90   15/26   Water pump heating
	Stored fault: Meaning of bar indication
	Possible stored faults (missing segment in bar indication, for example see picture):   Segment   ECU pin number   Fault description   9   --   Checksum fault in EEPROM   7   21   Water heater: Economy control line   6   3/4   Motor actuator, air volume, windscreen   5   5/6   Motor actuator, air volume, footwell   4   7/8   Motor actuator, bleed valve   3   22/23   Switched output, fresh air/recirculation valves   2   13/20   Water heater   15   35   Air outlet temperature sensor, driver's seat: Open circuit   10   24/25   Driver's seat water valve   13   34   Outside temperature sensor:   12   15/26   Water pump heating   16   35   Air outlet temperature sensor, driver's seat: Short circuit

 

	Address F Current fault: Meaning of the fault code   Possible current fault:   FC   ECU pin number   Fault description   11   21...26   Broken lead/missing load on final stage group 1   12   21...26   Plus terminal on final stage group 1   13   21...26   Earth terminal on final stage group 1   14   21...26   Bridge terminal on final stage group 1   21   3...8   Broken lead/missing load on final stage group 2   22   3...8   Plus terminal on final stage group 2   23   3...8   Earth terminal on final stage group 2   24   3...8   Bridge terminal on final stage group 2   90   17   Cooling system: Low pressure fault   91   11 Address A   Cooling system: High pressure fault   96   29   Control unit with address 7 without communication   97   29   Control unit with address 8 without communication   99   29   Control unit with address A without communication
	Stored fault: Meaning of bar indication
	Possible stored faults (missing segment in bar indication, for example see picture):   Segment   ECU pin number   Fault description   5   17   Cooling system: Low pressure fault   6   11 Address A   Cooling system: High pressure fault   1   29   Control unit with address 7 without communication   2   29   Control unit with address 8 without communication   4   29   Control unit with address A without communication