Description:

This error code indicates that the Selective Control Unit (SCC) has detected an unswitched supply voltage above 18.0 V. High voltage can be caused by a malfunctioning voltage regulator, issues within the alternator, or external voltage sources impacting the system.

Reaction:

When this code is detected, the SCC will disable its functions, turning them off to prevent potential damage due to overvoltage.

Recommendations:

Inspect Voltage Regulator:

• Check the voltage regulator for proper operation. Replace if it is malfunctioning or not maintaining voltage within specified limits.

Examine Alternator Output:

• Verify that the alternator is providing the correct voltage output. If the output is too high, repair or replace the alternator.

Check for External Voltage Sources:

• Ensure that there are no external voltage sources improperly connected to the SCC circuit, which could cause the voltage to rise above 18.0 V.

Inspect Wiring and Connections:

• Look for any signs of damaged wiring or poor connections that could affect voltage regulation. Repair or replace as necessary.

Monitor System Voltage:

• Use a multimeter to continuously monitor the system voltage, ensuring it stays within the safe operating range.

Note:

High voltage issues can cause significant damage to electronic components. Immediate action is required to prevent further damage.