HARNESS AS 1588901 - Caterpillar

Illustration 1 g00803369
Schematic of the Proportional Solenoid Valve for Negative Flow ControlThis diagnostic code is associated with the proportional solenoid valve for negative flow control. This diagnostic code is recorded when the implement ECM reads the current of the solenoid as being above normal. There is a short to ground. The possible causes of this diagnostic code are listed:
The signal circuit of the solenoid is shorted to ground.
The solenoid has failed.
The implement ECM has failed. This is unlikely. System Response:When this diagnostic code occurs, there is no warning on the monitor. The diagnostic code will only be active when the control for the work tool is actuated. An example of this action is pressing the pedal for operating a hammer. The diagnostic code is active when the pedal is pressed. When the pedal is no longer pressed, the diagnostic code is not active, but the code is present in the diagnostic code log ("LOGGED ERROR" screen). Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code is corrected.Test Step 1. CHECK THE SOLENOID.
Turn the disconnect