961921 Volvo.Penta Set screw

Check Engine/Diagnostic Lamp
The CHECK ENGINE/DIAGNOSTIC (YELLOW) lamp on the truck dashboard is used to communicate the status or operation situations of the electronic engine and control system.When the ignition key switch is turned ON, the YELLOW lamp will illuminate for five seconds (as a lamp check). The lamp will also illuminate and flash every five seconds whenever the ECM detects an ACTIVE fault or condition. If the lamp comes ON and continues to flash every five seconds after initial start-up, the ECM has detected a system problem.The YELLOW lamp is also used for the Idle Shutdown Timer. The lamp will start to flash at a rapid rate 90 seconds before the programmed idle time expiration is achieved. The engine will shut down after the 90 second interval. To disable the Idle Shutdown Timer, the ALLOW IDLE SHUTDOWN OVERRIDE must be programmed to YES. The clutch pedal or service brake pedal must be depressed during this final 90 seconds (YELLOW lamp flashing). A diagnostic EVENT code, Override of Idle Shutdown Timer, will be logged on the ECM.Diagnostic Flash Code Retrieval
CHECK ENGINE/DIAGNOSTIC Lamp in Cab
The following procedure can be used to determine ACTIVE codes (a constantly flashing lamp indicates an active code), or any codes which occur after the engine is started. The procedure cannot be used to get LOGGED codes which occurred before the ignition key switch was turned ON (i.e. from yesterday or a week ago). A Caterpillar electronic service tool is necessary to retrieve those LOGGED codes.All ACTIVE codes may be viewed using a Caterpillar electronic service tool or by performing the following procedure.1. Turn the Cruise Control ON/OFF switch OFF.2. Move the SET/RESUME switch to either position. Hold that position until the YELLOW lamp begins to flash.The YELLOW lamp will flash to indicate a two digit flash code and the Cruise Control switch may be released. The sequence of flashes represents the system diagnostic message. Count the first sequence of flashes to determine the first digit of the diagnostic code. After a two second pause, the second sequence of flashes will identify the second digit of the diagnostic code.Any additional diagnostic codes will follow (after a pause) and will be displayed in the same manner. Flash Code 55 signals No Detected Faults have occurred since the ignition key switch was turned ON.For further information, assistance for repairs, or troubleshooting, refer to Truck Engine Test Procedures and/or the Service Manual or contact an authorized Caterpillar dealer.The following chart lists and describes electronic diagnostic codes. The chart indicates the potential effect on engine performance with ACTIVE flash codes. Some codes record an event rather than a response to a performance problem. Troubleshooting is not required for codes 35, 41, 47 and 55. Code 01 will not flash out. Some codes will limit the operation or the performance of the engine. Refer to the Diagnostic Flash Code chart for these codes.Operation with Intermittent Diagnostic Codes
If the YELLOW lamp illuminates during engine operation and then shuts off, an intermittent fault may have occurred. Intermittent faults are logged into the permanent memory of the ECM.In most cases it is not necessary to stop the engine because of an intermittent code, however we recommend the operator retrieve the code(s) and reference the chart to identify the nature of the event. The operator should note or document the circumstances (low power, vehicle/engine speed limits, excessive smoke, etc) involved during the time the lamp was ON. Documentation may be useful for future reference, and in helping troubleshoot the situation.Engine Operation with Active Diagnostic Codes
If the YELLOW lamp stays ON during normal engine operation, first check to ensure that the engine has proper oil pressure, coolant temperature and coolant level. If the engine has the proper oil pressure and the YELLOW lamp is ON, this indicates that the system has identified a situation that is not within specification.To retrieve the code(s), refer to the Diagnostic Flash Code chart and follow the Suggested Driver Action (i.e., Shut Down Engine/Vehicle, Service ASAP or Schedule Service) provided. If low engine oil pressure occurs and the Engine Monitoring Package mode is programmed to DERATE, the electronic system will limit the maximum engine rpm that can be obtained until the oil pressure problem is corrected. If oil pressure is registering in the normal range, it is permissible to operate the engine.The ACTIVE code should be investigated and corrected as soon as possible. Repairing the cause of the code will shut the lamp OFF (if there is only one ACTIVE code).Engine Monitoring Package
This programmable feature monitors:* engine coolant temperature* oil pressure* inlet manifold air temperature* coolant level (if equipped with the sensor supplied by the OEM)
If the Shutdown Mode has been selected and the warning indicator activates, engine shutdown may take as little as 20 seconds from the time the warning indicator is activated. If possible, the vehicle should be steered carefully off of the roadway and brought to a stop. The vehicle can be restarted following shutdown if necessary for emergency maneuvers.
The Engine Monitoring Package is NOT a guarantee against catastrophic failures. Programmed delays and derate schedules are designed to minimize false alarms and provide time for the driver to bring the vehicle to a stop.
Customer Specified Parameters
Customer Specified Parameters can be programmed into the ECM to enhance fuel efficiency and operator convenience. Some parameters may affect engine operation and lead to driver complaints about power or performance, even though the engine is performing to specification.These parameters allow the owner/customer to influence how the vehicle is driven. The parameters can be changed as often as needed. Password protection enables the owner/customer to control the options and who can change the parameters. Refer to LEKT3166, Specing Caterpillar Electronic Truck Engines, for information. Consult with your Caterpillar dealer for detailed instructions on how to program the electronic engine for optimum performance and fuel economy.Caterpillar Driver Information Display
The Caterpillar Driver Information Display (CAT ID) can display a variety of engine and vehicle information. The CAT ID is an attachment that is available from