The error code ETC 001079.03 is triggered when the voltage measured at the positive lead (lead 2093) of the power supply to the 5-volt components (refrigerant pressure sensor B130, heater valve B131, and motor for adjusting the air distribution flaps B132) exceeds 5 volts. This indicates that the circuit is shorted to a positive supply…

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The error code ETC 000923.19 is triggered when the outputs for switching the fan motors (M07 and M10) are energized by more than one control unit. This indicates a conflict in the control signals being sent to the fan motors, which can cause erratic behavior or malfunction.

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The error code ETC 000923.12 is triggered when the power module (HF) PC6 measures in excess of 1 amp at one or both fan motor outputs (lead 2043 and/or 2047) while the fan motors (M07 and M10) are switched off. This indicates a short in the circuit or an internal fault in the power module.

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The error code ETC 000923.09 is generated when there is a problem transferring data between the power module (HF) PC6 and the ETC control unit. This fault indicates that reception of one, several, or all of the CAN messages transmitted by the ETC to the power module is intermittent or nonexistent, which could be due…

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The error code ETC 000923.04 is triggered when the power module (HF) PC6 measures a current exceeding 30 amps at one or both fan motor outputs (lead 2043 and/or lead 2047) while the fan motors (M07 and M10) are switched on. This condition indicates a short to ground in the relevant circuit.

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The error code ETC 000923.01 is generated when the power module (HF) PC6 measures less than 3 volts at the supply voltage for one or both fan motor outputs (lead 0752 and/or lead 0762) when the fan motors (M07 and M10) are switched on. This indicates a problem with the supply voltage for the fan…

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The error code ETC 000923.00 is triggered when the power module (HF) PC6 measures a total amperage exceeding 40 amps at one of the fan motor outputs (B1 and/or C3). This condition indicates a short to ground or a defective component in one of the monitored circuits.

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The error code ETC 000876.19 is triggered when the output for switching the compressor clutch (M02) is energized by more than one control unit. This indicates a conflict in the control signals being sent to the compressor clutch, which can cause erratic behavior or malfunction.

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The error code ETC 000876.12 is triggered when the power module (HF) PC6 measures in excess of 1 amp at the compressor clutch output (lead 2023) while the compressor clutch (M02) is switched off. This indicates a short in the circuit, as there should be no current present when the clutch is deactivated.

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The error code ETC 000876.09 is generated when there is a problem transferring data between the power module (HF) PC6 and the ETC control unit. This fault indicates that reception of one, several, or all of the CAN messages transmitted by the ETC to the power module is intermittent or nonexistent, which could be due…

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The error code ETC 000876.05 is triggered when the power module (HF) PC6 measures less than 350 mA at the compressor clutch output (lead 2023) while the compressor clutch (M02) is switched on. This indicates that the circuit is open, meaning there is no current flowing through the circuit as expected.

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