FRAME-PRESS. 1P3481 - Caterpillar

Table 1
Diagnostic Codes Table    
Description     Conditions which Generate this Code     System Response    
267-2 Remote Shutdown Input erratic, intermittent, or incorrect     The Electronic Control Module (ECM) detects that both of the switch inputs are open or that both of the switch inputs are closed.     The code is logged.
If equipped, the warning light will illuminate.
The engine will shut down.
If the engine is not running, the engine will start.    The engine shutdown switch allows the operator to shut down the engine from outside of the cab at ground level. When the switch is toggled to the STOP position, the engine shuts down. The ECM remains powered. The engine shutdown switch must be returned to the RUN position and the electrical power to the ECM must be cycled before the engine will be allowed to start.
Illustration 1 g01341026
Schematic for engine shutdown switch
Illustration 2 g01239061
Engine shutdown switch connector (1) Engine shutdown switch (N/O) (2) Sensor return (3) Engine shutdown switch (N/C)
Illustration 3 g01347135
A typical view of the P1 connector (harness side) pin locations. (P1-35) Sensor return (P1-48) Engine shutdown switch (N/O) (P1-47) Engine 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 engine shutdown switch. Refer to service Troubleshooting, "Electrical Connectors - Inspect".
Perform a 45 N (10 lb) pull test on each of the wires for the engine shutdown switch.
Check the torque of the allen head screw on the ECM connectors. Refer to service Troubleshooting, "Electrical Connectors - Inspect".
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 completely coupled and/or inserted and the harness and wiring are free of corrosion, of abrasion and of pinch points.Results:
OK - The harness and the connectors appear to be OK. Proceed to Test Step 2.
Not OK - There is a problem with 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 completely coupled.If applicable, use Caterpillar Electronic Technician (ET) to perform a "Wiggle Test".Use Cat ET 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 Cat ET to the service tool connector.
Restore the electrical power to the ECM.
Check the "Active Diagnostic Codes" screen for a 267-2 diagnostic code. Toggle the engine shutdown switch and monitor Cat ET 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 267-2 diagnostic code is not active.Results:
OK - The code does not become active.Repair: The switch is operating normally. There may be an intermittent problem in the wiring harness or in a connector. Check the wiring harness and the connectors for an intermittent electrical problem. Refer to service Troubleshooting, "Electrical