BEARING 7J1335 - Caterpillar

MID 027 CID 3013 FMI 02Conditions Which Generate This Code:
Illustration 1 g03712755CID 3012 is associated with an OEM Lockup Clutch (LUC) Disable Switch. An FMI 02 diagnostic code is recorded when the ECM determines that the LUC inputs are invalid (Erratic, Intermittent, or Incorrect).The ECM has two inputs to accommodate an OEM lockup clutch disable switch. During normal operation of the LUC switch, one of the inputs is open. The other input is grounded. When a circuit is measured with a voltmeter, an open circuit will measure approximately 8 VDC to ground and a closed circuit will measure approximately 0 VDC to ground.The possible causes of this diagnostic code are listed below:
The return circuit (wire J765-BU(Blue)) is open.
Both LUC signal inputs from J2-61 (wire C997-BU(Blue)) and J2-23 (wire G765-GN(Green)) are open.
Both of the LUC signal inputs from J2-61 (wire C997-BU(Blue)) and J2-23 (wire G765-GN(Green)) are connected to sensor ground.
The OEM switch has failed.
The ECM has failed. (ECM Failure is unlikely). Attention - Poor connections can often be the cause of a problem in an electrical circuit. Before performing this procedure, inspect the harness connectors that are involved in the circuit. Verify that all of the connections in the circuit are clean and secure. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing this procedure. 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. Ensure that the diagnostic code of CID 3013 FMI 02 is active before performing this procedure.
Table 1
Status of a typical OEM Switch
MODE OEM Switch Position J1-23
C997-BU(Blue) Circuit J2-61
G765-GN(Green) Circuit
Disabled Lockup Clutch Down Closed Open Test Step 1. CHECK THE GROUND CIRCUIT FOR AN OPEN
Turn the disconnect switch and the keyswitch to the OFF position.
Disconnect the switch from the machine harness.
Measure the resistance between frame ground and contact 2 (wire J765-BU(Blue)) at the connector for the switch. Expected Result:The resistance should be less than 5 ohms. Results:
OK - The resistance is less than 5 ohms. Proceed to Test Step 2.
NOT OK - The resistance is greater than 5 ohms. Repair: The return circuit (wire J765-BU(Blue)) is open in the machine harness. Repair or replace the machine harness. STOPTest Step 2. CHECK THE SWITCH
Check for continuity between contact 1 and contact 2 of the switch.
Press the switch. Release the switch and check for continuity.
Check for continuity between contact 3 and contact 2 of the switch.
Press the switch. Release the switch and check for continuity. Expected Result:The continuity check agrees with Table 1. Results:
OK - The continuity check agrees. Proceed to Test Step 3.
NOT OK - The continuity check does not agree. The switch has failed. Repair: Replace the switch. Verify that the new switch corrects the diagnostic code. STOPTest Step 3. CHECK THE SIGNAL CIRCUITS IN THE HARNESS FOR AN OPEN
Reconnect the switch to the machine harness.
Disconnect the J1 and J2 machine harness connectors from