241147 Volvo.Penta Screw

Table 1
Event Code
Description Conditions which Activate the Code System Response
E268(3) Unexpected Engine Shutdown The crank terminate relay is set and the engine is running. The engine rpm is less than the programmed speed of the postlube cycle for 200 ms. The fuel is shut off. The shutdown output is activated. The code is logged. Probable Causes
There is a problem with the Gas Shutoff Valve (GSOV).
Incorrect input(s) to the Engine Control Switch (ECS)
There is a problem with the relay for the prelube.
There is a problem with the switch for the prelube.
There is a problem with the "Crank Terminate" relay.
There is a problem with the relay for the starting motor.
A shutdown has been requested by the driven equipment.
There is a problem with the "Run" relay.
The "Crank Terminate Speed" is incorrectly programmed.
The "Cycle Crank Time" is incorrectly programmed.
The "Engine Overcrank Time" is incorrectly programmed.
The delay time for the driven equipment is excessive.
The battery power to the Electronic Control Module (ECM) is lost.
High starting loadRecommended Actions
Check for Active Diagnostic or Event Codes
Connect Cat ET and check for any active diagnostic or event codes. Repair any active diagnostic or event codes. Refer to Troubleshooting, "Diagnostic Trouble Codes" for a list of diagnostic codes and the applicable troubleshooting procedure to repair the code. Refer to Troubleshooting, "Event Codes" for a list of event codes and the applicable troubleshooting procedure to repair the code.If a problem is detected with any of the circuits for the following components the engine will be shutdown.
GSOV
ECS
Relay for the prelube
Prelubrication pressure switch
"Crank Terminate" relay
Relay for the starting motor
A shutdown has been requested by the driven equipment.
"Run" relayCheck the "Crank Terminate Speed"
The "Crank Terminate Speed" is a parameter that can be configured. The ECM disengages the starting motor when the engine exceeds the programmed "Crank Terminate Speed". The default value of 250 rpm should be sufficient for all applications.If the "Crank Terminate Speed" is too slow, the engine will shut down. Use the Cat ET to check the programmed "Crank Terminate" speed. Use Cat ET to adjust the "Crank Terminate Speed", if necessary.Check the "Cycle Crank Time"
The "Cycle Crank Time" is a parameter that can be configured. This parameter determines the time for engagement of the starting motor and 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 an equal "Rest" cycle.If the "Cycle Crank Time" is insufficient, the "Engine Overcrank Time" can elapse before the engine is able to start.Use Cat ET to check the "Cycle Crank Time". Use Cat ET to increase the time, if necessary.Check the "Engine Overcrank Time"
The "Engine Overcrank Time" is a parameter that can be configured. This parameter determines the length of time for the crank cycle. If the engine does not start within the programmed "Engine Overcrank time", the attempt to start is terminated.If the "Cycle Crank Time" is insufficient, the "Engine Overcrank Time" can elapse before the engine is able to start.Use Cat ET to check the "Engine Overcrank Time". Use Cat ET to increase the "Engine Overcrank Time", if necessary.Check the "Driven Equipment Delay Time"
The "Driven Equipment Delay Time" is a parameter that can be configured. The ECM provides a switch input for the driven equipment in order to delay engine start-up until the driven equipment is ready. The ECM will not attempt to start the engine until the switch input for the driven equipment closes to ground and the prelubrication (if equipped) is complete.An event code is generated if the "Driven Equipment Delay Time" elapses without closure of the switch input. To disable this feature, program the delay time to zero.If the programmed delay time is too long, the engine may not start. Use Cat ET to check the "Driven Equipment Delay Time". Use Cat ET to program the delay time to a reasonable amount of time.Battery Power to the ECM
Refer to Troubleshooting, "Electrical Power Supply - Test".
Inspect the ground strap and the battery for connections that are loose and/or corroded.
Inspect the ECM and the terminal box for proper installation of the connectors.
Check the circuit breaker for the ECM in the terminal box. High Starting Load
If the engine has a high load at start-up, this fault may occur. This is especially true if the engine is not warm.