COVER GP-VALVE MECHANISM 3416804 - Caterpillar

the ECM is open and the ECS in auto input is open. After the engine cooldown, the ECM will shut down the engine.If the signals from the start/run/stop input to the ECM are in opposite states, the ECM determines that one of the signals is faulty. The ECM ignores the signals until power is cycled to the ECM. If this occurs, the engine must be cranked manually. Use the "Manual Crank Switch" which is located inside the electronic instrument panel. When the engine is shutdown, the ECS must be placed in the OFF/RESET position. This will disconnect power to the ECM. A CID-FMI will be active until the ECM is powered down. The status for the ignition switch will display "ABNORMAL DATA" until power to the ECM is cycled. If the engine is running and the signals from the start/run/stop input to the ECM change to opposite states, the engine will continue to run. The ECM generates a diagnostic code that will remain active until power to the ECM is cycled. When the engine is shutdown, the ECS must be placed in the OFF/RESET position. This will disconnect power to the ECM.If you close the remote start/stop switch, and the ECS is in the AUTO position, the engine will start. The status for the switch will display "ON" or "OFF". This status of the remote start/stop switch is available on the Caterpillar Electronic Technician (ET) when the ECS is in the AUTO position.
Illustration 1 g01021043
Typical exampleTest Step 1. Check for Connector Damage.
Turn the keyswitch to the OFF position.
Thoroughly inspect the ECM connector J1/P1 and the machine connector J2/P2. Inspect all of the other connectors. Refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the ECM connector (allen head screw) for the proper torque of 2.25 0.25 N m (20 2 lb in).
Check the machine connector (allen head screw) for the proper torque of 2.25 0.25 N m (20 2 lb in).
Check the harness and the wiring for abrasion and for pinch points.Expected Result:The connectors and wiring are free of the following problems: damage, corrosion, abrasion and incorrect attachment.Results:
OK - The connectors and wiring are okay. Proceed to Test Step 2.
Not OK - The connectors and/or wiring are not okay.Repair: Repair the connectors or wiring and/or replace the connectors or wiring. If necessary, replace the ECS.STOPTest Step 2. Check the Status of the ECS on Cat ET.
Turn the circuit breaker for the battery to the ON position.
Turn the circuit breaker for the mag relay of the starting motor system to the OFF position.
Turn the ECS to the STOP position.
Connect Cat ET to the service tool connector.
Observe the status for the ignition switch on Cat ET.Expected Result:The status for the ignition switch reads "STOP".Results:
OK