Description:

This diagnostic trouble code is generated when the PTA control software registers a voltage value at the solenoid valve for the disk brake that does not correspond with the switch status of the BG disk brake. This indicates a short to a positive lead or a defective solenoid valve for the disk brake. The fault can be detected during power-up after ignition ON or when the transmission is in speed bands 1 and 2.

Reaction:

Limited or no function of the transmission until the error is corrected, indicating a critical issue with the solenoid valve circuit.

Recommendations:

Inspect Solenoid Valve Circuit:

• Check the circuit for any short circuits to positive leads.
• Repair any identified issues in the circuit.

Test Solenoid Valve:

• Measure the voltage at the solenoid valve using a multimeter.
• Replace the solenoid valve if it is producing abnormally high voltage readings.

Examine Wiring and Connectors:

• Inspect all wiring and connectors associated with the solenoid valve for the disk brake for signs of damage or corrosion.
• Repair or replace any damaged components to ensure proper electrical connections.

Ensure Proper Power Supply:

• Verify that the solenoid valve is receiving the correct supply voltage.
• Correct any power supply issues that may be causing high voltage readings.

Note:

High voltage readings from the solenoid valve can lead to severe operational problems. Regular inspection and maintenance of the solenoid valve and its circuitry are essential to prevent these issues.