This diagnostic trouble code (TCU 522399.05) is generated if the control unit registers a resistance at the solenoid valve that does not correspond with the switch status of clutch 1. This indicates that the solenoid valve’s circuit is open, leading to insufficient current flow.

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This diagnostic trouble code (TCU 522392.05) is generated if the control unit registers a resistance at the solenoid valve that does not correspond with the switch status of clutch 3. This indicates that the solenoid valve’s circuit is open, leading to insufficient current flow.

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This diagnostic trouble code (TCU 522392.04) is generated if the control unit registers a resistance at the solenoid valve that does not correspond with the switch status of clutch 3, and a voltage drop at the solenoid valve is also registered. This typically indicates a short to ground in the solenoid valve circuit.

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This diagnostic trouble code (TCU 522392.03) is generated if the control unit registers resistance and voltage at the solenoid valve that do not correspond with the switch status of clutch 3. This indicates a short to a positive lead or a defective solenoid valve. The fault can be recognized by the control unit during initialization…

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This diagnostic trouble code (TCU 522389.05) is generated if the control unit registers a resistance at the solenoid valve that does not correspond with the switch status of clutch 4. This indicates that the solenoid valve’s circuit is open, leading to insufficient current flow.

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This diagnostic trouble code (TCU 522389.04) is generated if the control unit registers a resistance at the solenoid valve that does not correspond with the switch status of clutch 4, and a voltage drop at the solenoid valve is also registered. This typically indicates a short to ground in the solenoid valve circuit.

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This diagnostic trouble code (TCU 522389.03) is generated if the control unit registers resistance and voltage at the solenoid valve that do not correspond with the switch status of clutch 4. This indicates a short to a positive lead or a defective solenoid valve. The fault can be recognized by the control unit during initialization…

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This diagnostic trouble code (TCU 522379.11) is generated if the PLC control unit reports a problem with Y15/2 park lock solenoid valve 2 via the CAN BUS. In its active state, this fault also generates a diagnostic trouble code at the PLC, which takes priority.

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This diagnostic trouble code (TCU 522379.05) is generated if the control unit detects an open circuit at the signal input of park lock solenoid valve 1 (Y15/1, lead 6047). This indicates a potential disconnection or break in the circuit leading to insufficient current.

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This diagnostic trouble code (TCU 522379.04) is generated if the control unit detects a short to ground at the signal input of park lock solenoid valve 1 (Y15/1, lead 6047). This indicates an electrical issue causing lower-than-expected voltage at the solenoid valve.

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This diagnostic trouble code (TCU 522379.03) is generated if the control unit detects a short to a positive lead at the signal input of park lock solenoid valve 1 (Y15/1, lead 6047). This indicates an electrical issue causing higher-than-expected voltage at the solenoid valve.

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