Description:

This diagnostic trouble code (TCU 000168.00) is generated when the control unit registers a supply voltage above 16 volts. Excessive voltage can indicate an issue with the charging system, voltage regulator, or an electrical fault within the equipment.

Reaction:

When this error code is detected, the control unit may experience erratic behavior or potential damage due to the high voltage. The system might enter a protective mode to prevent further issues, leading to reduced functionality or warnings displayed to the operator.

Recommendations:

1. Inspect Charging System:

• Check Alternator Output: Verify the output voltage of the alternator to ensure it is within the recommended range.
• Test Voltage Regulator: Test the voltage regulator to ensure it is properly controlling the voltage output.

2. Check Electrical Connections:

• Inspect Wiring: Check all electrical connections for signs of damage, corrosion, or loose connections.
• Repair or Replace: Repair or replace any faulty wiring or connectors.

3. Test Battery:

• Verify Battery Condition: Check the battery for any signs of overcharging or damage.
• Replace if Necessary: Replace the battery if it is not functioning correctly.

4. Monitor Voltage Levels:

• Use Diagnostic Tools: Monitor the supply voltage using diagnostic tools to ensure it remains within safe limits.

Note:

Maintaining proper voltage levels is crucial for the safe operation of the control unit and other electronic components. Regular inspections and maintenance of the charging system and electrical connections can help prevent high voltage issues.