2800 Series
5 Troubleshooting with an event code
5
General information This chapter is to be used for troubleshooting problems that have Event Codes but do not have ACTIVE Diagnostic codes. Before using this chapter, be sure that you have gathered information about the complaint to adequately describe the symptoms, verified that the complaint is not due to normal engine operation, and repaired all ACTIVE Diagnostic codes. Refer to Chapter 6, Troubleshooting with a diagnostic code. The basic philosophy of troubleshooting this engine is to follow the three steps listed below FIRST to diagnose a malfunctioning engine: 1 Gather operator information. Verify complaint is not due to normal engine operation. 2 Perform a visual inspection of engine. Check oil level, supply and/or condition. Check for visible wiring and connector problems or damaged components. 3 Check and repair all ACTIVE/LOGGED diagnostic codes using the troubleshooting procedures in Chapter 6, Troubleshooting with a diagnostic code. If ALL three of these steps reveal no problems, identify probable causes using the procedure or procedures in this chapter that best describes the symptoms. Narrow the probable causes given in the procedure by considering operator information, operating conditions, and repair history of the engine. Operator information
l l l l l l l
What happened, and when ? Under what conditions ? Was the engine rev/min (speed) high or low ? Was the engine under load ? Are there any customer or dealer installed systems that could cause this symptom ? What else occurred ? When did the symptoms begin (and what else happened at that time) ?
Logged diagnostic codes
l Do they correlate to probable causes ? l Did they occur at the same time as the symptoms ? l Are some codes logged repeatedly ? Other symptoms
l Are they related to this symptom ? l Do they have common probable causes ? Finally, test each probable cause using the tests suggested by the procedure. Be sure to check connectors, especially on intermittent problems. Refer to Test 1: Inspecting electrical connectors on page 80 for details.
Diagnostic Manual, TSL4247, Preliminary
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