BRACKET AS 4476512 - Caterpillar

Illustration 1 g01273475
8 VDC Power Supply connections
This diagnostic code is associated with the ECM 8 volt power supply. The 8 volt power supply provides power for the left joystick, the right position sensor of the steering cylinder and the machine articulation angle sensor 1.The Implement ECM 8 volt power supply is one of two power supplies that are used for the left hand joystick. The other power source for the left hand joystick is supplied by the Transmission/Chassis ECM.The CID 0041 FMI 03 diagnostic code becomes active when the ECM detects that the voltage of the 8 volt power supply circuit is above normal.The following conditions could cause this diagnostic code:
The power supply circuit is shorted to a higher voltage source.
The ECM has failed. This is unlikely.Note: Before performing this procedure, inspect the harness connectors that are involved in the circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, that all connections are secure and that all connections are in good condition. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing this procedure. Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the problem has been corrected.Test Step 1. CHECK THE VOLTAGE AT A COMPONENT
Turn the disconnect switch and the key start switch to the ON position.
Disconnect the machine harness connector from the position sensor of the right steering cylinder.
At the machine harness connector for the sensor, measure the voltage from contact 1 (wire R800-OR(Orange)) to contact 2 (wire P967-PU(Purple)). Expected Result: