WHEEL MOTOR GUARD (LEFT REAR) 96312 - Caterpillar

Illustration 1 g01305575
Solenoid 1 Return connections
This diagnostic code is associated with the solenoid 1 return circuit. The FMI 05 means that the Transmission Chassis ECM has determined that the current for the solenoid 1 return circuit is above normal.The solenoid 1 return circuit provides a return path to the ECM for the left and the right secondary steering solenoids.Conditions that could cause this diagnostic code to be activated are:
The return circuit for one or both solenoids is shorted to a ground source.
The ECM has failed. This is unlikely. 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, secure and 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 these diagnostic codes when the original diagnostic code has been corrected. Test Step 1. CHECK THE SOLENOID 1 RETURN CIRCUIT FOR A SHORT TO GROUND
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the secondary steer left solenoid and the secondary steer right solenoid from the machine harness.
Disconnect the machine harness connectors J1 and J2 from the Transmission Chassis ECM.
At the machine harness connectors for the ECM, measure the resistance from the solenoid 1 return contact J1-54 (wire 925-YL(Yellow)) to frame ground. Measure the resistance from the contact J1-54 (wire 925-YL(Yellow)) to all of the other J1 and J2 contacts that are used in the Transmission Chassis ECM connectors. Expected Result:Each resistance measurement is greater than 50 ohms.Results:
OK - Each resistance measurement is greater than 50 ohms. The measurement is not indicating that the solenoid 1 return circuit is shorted to a ground source. Proceed to Test Step 2.
NOT OK - One or more of the resistance measurements is less than 50 ohms. There is a short in the machine harness. The short is between wire 925-YL(Yellow) and the circuit with the low resistance measurement or frame ground. Repair: For information on testing for short circuits and finding short circuits, refer to Testing and Adjusting, "Wiring Harness (Short Circuit) - Test". Repair the machine harness or replace machine harness.STOPTest Step 2. CHECK THE STATUS OF THE DIAGNOSTIC CODE
Inspect the harness connectors and clean the contacts of the harness connectors and check the wires for damage to the insulation that is caused by excessive heat, battery acid, or chafing.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the sensor circuit.
Reconnect all harness connectors. Make sure that the connectors are fully seated and the clips for each connector are completely fastened.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID 1674