Description:

This diagnostic trouble code (DTC) is generated when the control software detects a voltage of less than 0.5 volts at the signal input from channel 1 of the accelerator pedal potentiometer. This low voltage reading indicates a problem with the signal lead or the potentiometer’s supply voltage.

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 Supply Voltage:

• Check the signal lead and supply voltage 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 is below 0.5 volts, further investigation is required.

Verify Potentiometer Supply Voltage:

• Ensure that the potentiometer is receiving the correct supply voltage. If the supply voltage is too low, the potentiometer will not function correctly.
• Check the power source and connections supplying voltage to the potentiometer.

Update Control Software:

• Ensure 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 low voltage issues. Environmental factors such as moisture or extreme temperatures can also affect electrical connections.