LINK AS-TRACK 6I9527 - Caterpillar

The ground level shutdown switch allows the engine to be shut down from ground level. When the switch is moved to the STOP position, the engine shuts down. The ECM remains powered. The ground level shutdown switch must be in the RUN position and the power to the ECM must be cycled before the engine can restart.
Illustration 1 g02659220
Schematic for the ground level shutdown switch
Illustration 2 g02656956
Ground level shutdown switch connector (1) Ground level shutdown switch (N/C) (2) Switch return (3) Ground level shutdown switch (N/O)
Illustration 3 g02657016
Pin locations on the P1 connector for the ground level shutdown switch. (5) Ground level shutdown switch return (40) Ground level shutdown switch (N/O) (41) Ground level shutdown switch (N/C)Test Step 1. Inspect the Electrical Connectors and the Wiring
Remove the electrical power from the ECM.
Thoroughly inspect the J1/P1 ECM connectors and the connectors for the ground level shutdown switch. Refer to Troubleshooting, "Electrical Connectors - Inspect".
Perform a 45 N (10 lb) pull test on each of the wires for the engine shutdown switch.
Check the screw for the ECM connector for the correct torque of 6 N m (53 lb in).
Check the harness and the wiring for abrasion and for pinch points from the switch back to the ECM.Expected Result:All of the connectors, pins, and sockets are correctly coupled and/or inserted. The harness and wiring are free of corrosion, abrasion, and pinch points.Results:
OK - The harness and the connectors appear to be OK. Proceed to Test Step 2.
Not OK - There is a fault in the connectors and/or wiring.Repair: Repair the wiring and/or the connectors. Replace parts, if necessary. Ensure that all of the seals are properly in place and ensure that the connectors are correctly coupled.If necessary, use the electronic service tool to perform a "Wiggle Test".Use the electronic service tool in order to clear all logged diagnostic codes and then verify that the repair eliminates the fault.STOPTest Step 2. Check for Active Diagnostic Codes
Connect the electronic service tool to the diagnostic connector.
Restore the electrical power to the ECM.
Toggle the ground level shutdown switch and monitor the electronic service tool for the active diagnostic code. Wait at least 30 seconds so that any codes may become active.
Remove the electrical power from the ECM.Expected Result:A diagnostic code is not active.Results:
OK - The code does not become active.Repair: The switch is operating normally. There may be an intermittent fault in the wiring harness or in a connector. Check the wiring harness and the connectors for an intermittent electrical fault. Refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - A diagnostic code is active. Proceed to Test Step 3.Test Step 3. Check the Resistance of the Switch Circuit at the ECM Connector
Disconnect the J1/P1 connector.Note: Wiggle the harnesses during the following measurements in order to detect any intermittent faults.
Measure the resistance between terminals P1-5 (return) and P1-41 (ground level shutdown switch (N/C)). The correct resistance measurement indicates a short circuit.
Measure the resistance between terminals P1-5 (return) and P1-40 (ground level shutdown switch (N/O)). The correct resistance measurement