PIN 1865662 - Caterpillar

Probable Causes
Gas Shutoff Valve (GSOV)
Inputs for the engine operating mode at the Electronic Control Module (ECM)
Crank terminate relay
Starting motor relay
Shutdown command from the driven equipment
Run relay for the engine
"Crank Terminate RPM" parameter
"Cycle Crank Time" parameter
"Engine Overcrank Time" parameter
"Driven Equipment Delay Time" parameterRecommended Actions
Gas Shutoff Valve (GSOV)
Connect Caterpillar Electronic Technician (ET) to the service tool connector. Check for the following diagnostic codes:
17-5 Fuel Shutoff Valve current below normal
17-6 Fuel Shutoff Valve current above normal
17-12 Fuel Shutoff Valve failureIf any of the codes that are listed above are active or logged, troubleshoot the code. Refer to Troubleshooting, "ECM Output Circuit (Fuel Control)" for information that is related to troubleshooting the GSOV. Perform the necessary repairs.Inputs for the Engine Operating Mode at the ECM
Check for a 336-2 Engine Control Switch erratic, intermittent, or incorrect.If the code is active or logged, troubleshoot the code. Refer to Troubleshooting, "Electrical Power Supply" for information that is related to troubleshooting the engine control switch. Perform the necessary repairs.Crank Terminate Relay
Check for a 443-3 Crank Terminate Relay voltage above normal.If the code is active or logged, troubleshoot the code. Refer to Troubleshooting, "ECM Status Indicator Output" for information that is related to troubleshooting the crank terminate relay. Perform the necessary repairs.Starting Motor Relay
Check for the following diagnostic codes:
444-5 Starter Motor Relay current below normal
444-6 Starter Motor Relay current above normalIf either of the codes that are listed above are active or logged, troubleshoot the code. Refer to Troubleshooting, "ECM Output Circuit (Starting Motor)" for information that is related to troubleshooting the starting motor relay. Perform the necessary repairs.Shutdown Command from the Driven Equipment
Determine if a shutdown command from the driven equipment has been requested. Refer to Troubleshooting, "Driven Equipment" for information that is related to troubleshooting the driven equipment. Perform the necessary repairs.Run Relay for the Engine
Check for a 445-3 Run Relay voltage above normal.If the code is active or logged, troubleshoot the code. Refer to Troubleshooting, "ECM Status Indicator Output" for information that is related to troubleshooting the run relay. Perform the necessary repairs."Crank Terminate RPM" Parameter
The "Crank Terminate RPM" parameter can be configured using Cat ET. The ECM disengages the starting motor when the engine exceeds the crank terminate speed that is programmed for this parameter. The default value of 250 rpm should be sufficient for all applications.If the value for the crank terminate speed is too low the starting motor will be shutdown before an adequate engine starting speed is obtained. Use the Cat ET to check the value of the "Crank Terminate RPM" parameter. Adjust the parameter, if necessary."Cycle Crank Time" Parameter
The "Crank Terminate RPM" parameter can be configured using Cat ET. This parameter determines the crank cycle duration. The parameter also controls the gas shutoff valve during the crank cycle. If the engine does not start within the programmed "Cycle Crank Time", the attempt to start is suspended for a rest cycle that is of an equal duration.Use Cat ET to check the "Cycle Crank Time". If the "Cycle Crank Time"