PIN AS 3671621 - Caterpillar

Table 1
Diagnostic Trouble Codes for the Ground Level Shutdown Switch
J1939 Code CDL Code Code Description Comments
- 266-3 Crank Without Injection Input voltage above normal The Electronic Control Module (ECM) detects the following condition:
Both contacts from the ground level shutdown switch are in the open state.
- 266-4 Crank Without Injection Input voltage below normal The Electronic Control Module (ECM) detects the following conditions:
Both contacts from the ground level shutdown switch are in the closed state.
- 267-3 Remote Shutdown Input voltage above normal The Electronic Control Module (ECM) detects the following condition:
Both contacts from the ground level shutdown switch are in the open state.
- 267-4 Remote Shutdown Input voltage below normal The Electronic Control Module (ECM) detects the following conditions:
Both contacts from the ground level shutdown switch are in the closed state. 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 g03849401
Schematic for the ground level shutdown switch
Not all connectors are shown. Refer to the Electrical Schematic for the application.
Illustration 2 g03558776
Pin locations on the P1 connector for the ground level shutdown switch.
(35) Ground level shutdown switch return
(45) Ground level shutdown switch (N/O)
(46) Ground level shutdown switch (N/C)
Table 2
Troubleshooting Test Steps Values Results
1. Inspect Electrical Connectors and Wiring
A. Thoroughly inspect the terminal connections on the P1 ECM connector and the switch connector.
Refer to Troubleshooting, "Electrical Connectors - Inspect".
B. Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector and the ground level shutdown switch connector..
C. Check the screw for the ECM connector for the correct torque of 5 N m (44 lb in).
D. Check the harness for corrosion, abrasion, and pinch points from the solenoids to the ECM.
Loose connection or damaged wire
Result: There is a fault in a connector or the wiring.
Repair any faulty connectors or replace the wiring harness. Ensure that all of the seals are properly in place and ensure that the connectors are correctly coupled.
Use the electronic service tool to clear all logged diagnostic codes and verify that the repair eliminates the fault.
Result: All connectors, pins, and sockets are correctly coupled and/or inserted. The harness is free of corrosion, abrasion, and pinch points.
Proceed to Test Step 2.
2. Check for Active Diagnostic Codes
A. Turn the keyswitch to the OFF position.
B. Connect the electronic service tool to the diagnostic connector.
C. Place the ground level shutdown switch in the RUN position.
D. Turn the keyswitch to the ON position. Wait at least 20 seconds for activation of the diagnostic codes.
E. Verify if any of the diagnostic codes that are listed in Table 1 are active.
F. Turn the keyswitch to the OFF position.
Diagnostic codes
Result: No diagnostic codes are active or logged.
Repair: The switch is operating normally. There may be an intermittent fault in the wiring harness or in