Description:

This diagnostic trouble code (DTC) is triggered when the control software detects a voltage greater than 4.5 volts at the signal input from channel 1 of the accelerator pedal potentiometer. This high voltage reading suggests an issue with the signal lead or the ground connection of the potentiometer.

Reaction:

• The control software will either limit or completely disable the function of the accelerator pedal potentiometer.
• The vehicle’s performance may be significantly impaired, affecting acceleration.

Recommendations:

Inspect Signal Lead and Ground Connection:

• Examine the signal lead and ground connection for any signs of damage, corrosion, or loose connections.
• Repair or replace any damaged or faulty wiring and connectors.

Check Voltage at Signal Input:

• Use a multimeter to measure the voltage at channel 1 of the accelerator pedal potentiometer.
• Confirm that the voltage is within the expected range (typically 0.5 to 4.5 volts). If it exceeds 4.5 volts, further investigation is required.

Verify Ground Connection:

• Ensure that the ground connection for the potentiometer is secure and free from corrosion.
• Clean or replace the ground connection if necessary.

Update Control Software:

• Verify that the control software is up-to-date with the latest version provided by the manufacturer. Software updates may include fixes for voltage detection and handling.

Consult Technical Support:

• If the issue persists after performing the above checks, consult technical support for further diagnostic procedures or to determine if there is an underlying issue with the control software or hardware.

Note:

Regular inspection and maintenance of the accelerator pedal and its associated wiring can prevent high voltage issues. Environmental factors such as moisture or extreme temperatures can also affect electrical connections.