SOCKET GP-TIE ROD 2768723 - Caterpillar

System Operation Description:Use this procedure to troubleshoot a suspected problem with a circuit that is for the user-defined shutdown or the emergency stop switches. Also, use this procedure if one of the diagnostic codes in Table 1 is active or easily repeated.
Table 1
Diagnostic Codes Table
J1939 Code and Description Conditions which Generate this Code System Response
3607-2 Engine Emergency Shutdown Indication : Erratic, Intermittent, or Incorrect The Electronic Control Module (ECM) detects an intermittent signal from one of the emergency stop switch. The code is logged.
The red stop lamp is activated. The state of the inputs for the emergency stop switches and user-defined shutdown allow the ECM to determine if the engine is ready for starting. The emergency stop switch can be used by the operator to prohibit engine starting and the switch can be used to shut down the engine. A remote switch can also be installed by the customer that will prevent the engine from starting or shut down the engine.The emergency stop switches are located on the engine control panel. The ECM is configured to record a diagnostic code that indicated an engine event when the switch is activated. The emergency stop switches are normally closed switches when in the RUN position.Terminal 78 at the customer terminal strip in the display panel is reserved as a user-defined shutdown input. At the factory, the circuit is wired to terminal 15 (digital return) at the display panel terminal strip. The input may be wired by the customer to a normally closed switch that will become grounded to the −Battery during engine operation. In order for engine starting to be initiated, this terminal must become grounded. Once the circuit is opened, a delay timer begins to count down a preprogrammed delay. If the circuit becomes open during engine operation, the engine will be shut down. Refer to Systems Operation, "System Configuration Parameters" for information that is related to the "Driven Equipment Delay Time" parameter.Note: The user-defined shutdown input at the engine ECM must be grounded in order for the engine to be cranked. If a user-defined shutdown is not being used on this engine, ensure that the circuit for this input is grounded to the digital return.
Illustration 1 g02668756
Schematic for the engine shutdown circuits
Test Step 1. Inspect the Electrical Connectors and the Wiring
Remove electrical power from the engine.
Illustration 2 g02672138
Location of the components for the engine shutdown circuits
(1) ECM control box
(2) Engine interface connector
(3) Interconnect harness connector
(4) Emergency shutdown switch
Illustration 3 g02674036
Location of the components for the engine shutdown circuits
(5) J1/P1 ECM connector
Thoroughly inspect connectors (2), (3), and (5). Also, thoroughly inspect the terminal connections at terminal strip (6 ) and at the emergency shutdown switch (4) that are inside the display panel. Carefully inspect any other connections that are associated with the circuit for the driven equipment. Refer to Testing and Adjusting, "Electrical Connectors - Inspect" for details.
Illustration 4 g02674087
Terminal locations at the P1 ECM connector that are for the engine shutdown
(P1-5) Digital return
(P1-18) Digital return
(P1-22) User-defined shutdown
(P1-23) Emergency stop 1
(P1-56) Emergency stop