Theory Of Operation

WARNING: This page is about a different car, the 2016 RAM 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

The purpose of the diagnostic is to check Linear Solenoid 1 circuit for solenoid resistance failures by monitoring the commanded current and feedback current for high or low conditions. The Linear Solenoid 1 is a normally closed valve. The TCM controls each linear solenoid via pulse-width modulation for precise control of the hydraulic circuit pressure. If the feedback current is less than or equal to a calibrated threshold and the commanded current is greater than or equal to a calibrated threshold for a calibrated amount of time, a DTC will be set. If the feedback current is greater than or equal to a calibrated threshold and the commanded current is less than or equal to a calibrated threshold for a calibrated amount of time, a DTC will be set.

NOTE:

Although the name for this DTC indicates it is for Pressure Control Solenoid 2 (B), this DTC actually sets for Pressure Control Solenoid 1.