PIN-TRACK 4712025 - Caterpillar

Illustration 1 g06111179
Implement ECM Operator Control Switch (Switch To Ground) - Test Switches
Note: The diagram above is a simplified schematic of the electrical circuit. The schematic is electrically correct. However, not all the possible harness connectors are shown. Refer to the latest revision of the Electrical Schematic for the complete schematic.Diagnostic Trouble Code Procedure
Note: Prior to beginning this procedure, inspect the harness connectors that are involved in this circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure, and in good condition. If a problem with a connection is found, correct the problem and verify that the diagnostic code is active before performing a troubleshooting procedure. For sensors powered via the fuse panel, check the condition of the appropriate fuse before beginning the troubleshooting procedure.
Table 2
Troubleshooting Test Steps Values Results
1. Identify Active FMI Code Associated With The Switch Circuit Code present. FMI 03 diagnostic code, proceed to Test Step 2.
FMI 04 diagnostic code, proceed to Test Step 7.
Begin Process For FMI 3 Troubleshooting Here
2. Check the Harness For an Open
A. Turn key start switch and disconnect switch OFF.
B. Disconnect the switch from the machine harness.
C. Disconnect the J1 and J2 machine harness connector.
D. At the machine harness connector for the switch, place a jumper wire between the signal contact and frame ground.
E. At the machine harness connect for the ECM, measure the resistance between the signal contact and