WASHER-THRUST 1369394 - Caterpillar

Illustration 1 g01407977This diagnostic code is associated with the “Auto/Manual Switch” for the right side of the Motor Grader. The FMI 07 diagnostic code is displayed when the ECM determines that the switch is active for more than 15 seconds. The switch is probably stuck.The possible causes of this diagnostic code are listed below:
The switch has failed.
The switch circuits in the harness have failed.
The ECM has failed. This is unlikely. Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 2259 FMI 07 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:When this diagnostic code is active the hydraulic control system will default to the "Auto Not Allowed" state.Test Step 1. CHECK THE SWITCH
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connector from the switch.
Use a Multimeter to verify the proper operation of the switch. Refer to Table 1 for the switch operation.
Table 1
Contacts "A" to" C" Contacts "B" to "C" Switch Status
Less than 5Ω Greater than 5kΩ Not Pressed
Greater than 5kΩ Less than 5Ω Pressed Expected Result:The switch is operating correctly.Results:
OK. - The switch is operating correctly. Proceed to Test Step 2.
NOT OK. - The switch is not functioning correctly. There is an internal failure in the switch.Repair: Replace the switch.STOPTest Step 2. CHECK THE N/O and N/C SWITCH CIRCUIT IN THE HARNESS
The key start switch and the disconnect switch remain in the OFF position.
Disconnect the machine harness connectors from the ECM. The switch remains disconnected.
At the machine harness connector for the ECM, measure the resistance from contact "J2-62 (wire Y938-YL)" to contact "J2- 63 wire (Y769-YL)". Expected Result:The resistance is greater than 5kΩ.Results:
OK. - The resistance is greater than 5kΩ. The machine harness is correct. Proceed to Test Step 4.
NOT OK. - The resistance is less than 5Ω. The circuit is open.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK THE N/C AND GROUND CIRCUIT OF THE SWITCH IN THE HARNESS
The key start switch and the disconnect switch remain in the OFF position.
The machine harness connectors remain disconnected from the ECM and the switch.
At the connector for the switch, place a jumper between contact A and contact C.
At the machine harness connector for the ECM, measure the resistance from contact "J2-63 (wire J769-YL)" to contact "J2- 22 wire (H745-BR)". Expected Result:The resistance is less than 5Ω.Results:
OK. - The resistance is less than 5Ω. The machine harness is correct. Proceed to Test Step 4.
NOT OK. - The resistance is greater than 5kΩ. The circuit is open.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 4. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE.
Inspect the contacts and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the