HARNESS AS-PANEL 3266140 - Caterpillar

Illustration 1 g02176242
Schematic of the 8 VDC Sensor Supply circuit for "D Series" machines.
Illustration 2 g03422048
Schematic of the 8 VDC Sensor Supply circuit for models 312D2, 313D2, and 318D2.This diagnostic code is associated with the 8 VDC Sensor Supply circuit. An FMI 06 diagnostic code means the ECM has determined the current of the sensor supply circuit is above normal. For machines equipped with the E-Fence feature, reference Troubleshooting, "E-Ceiling and Cab Avoidance - Troubleshoot"Possible causes for this diagnostic code are:
The sensor supply output is shorted to ground.
A sensor in the 8VDC circuit has failed.
The Machine ECM may have failed, but is unlikely.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes now, but clear those codes after the original diagnostic code has been corrected. Note: Poor connections are often the cause of a problem in electrical circuits. Before performing this procedure, inspect all of the harness connectors involved in the circuit. Verify that all of the connections in the circuit are clean, secure, and in good condition. If a problem is found with any of the connections: correct the problem and verify that diagnostic code CID 0041 FMI 06 is still active, before performing the following procedures. Test Step 1. CHECK FOR THE CORRECT VOLTAGE AT THE ECM.
Turn the disconnect switch and