9-11
TABLE 9-1. TROUBLESHOOTING GENSET FAULTS (CONT.)
Some genset service procedures present hazards that can result in severe personal
injury or death. Only trained and experienced service personnel with knowledge of fuels, electricity,
and machinery hazards should perform genset service. See Safety Precautions.
Accidental or remote starting can cause severe personal injury or death. Before removing a panel or
access door, disconnect the negative (−) cable from the battery to prevent the engine from starting.
WARNING
UNKNOWN SHUTDOWN—CODE NO. 36
(The genset Controller declared this fault because engine speed fell below 1000 RPM for 0.5 seconds,
though not by genset or engine control action)
Corrective Action: Refer to Pages A-1 through A-5, as appropriate.
1. Check for mechanical damage and service as necessary.
2. Push the genset line circuit breaker OFF and disconnect the PTO, if so equipped. If the genset
now runs, reduce the number of electrical and mechanical (PTO) loads.
3. Check fuel level and refill as necessary. (Note: The genset fuel pickups are probably higher than the
propulsion engine fuel pickups.)
4. Prime the engine fuel system for at least 30 seconds (p. 3-3).
5. Remove combustion air or exhaust system blockages.
6. Check all fuel fittings for fuel and air leaks and tighten as necessary.
7. Replace fuel filters (p. 4-6).
8. Conduct a fuel pump test and replace if necessary (p. 6-4).
9. Disconnect connector P1 (black) from the genset controller (Page 5-1) and measure resistance be-
tween Pin 5 and A12+ and between Pin 4 and A12−. If either lead is open, check for a missing, bent
or corroded pin or faulty wiring and repair as necessary.
10. Check for proper operation of the governor actuator and replace if necessary (Page 5-9).
11. Check for a malfunctioning exciter (Page 7-3) or rotor (Page 7-4, 7-6) or open or grounded quadra-
ture circuit (Page 7-8), and service as necessary.
12. Service the fuel injectors. See Table 6-1 for the appropriate engine workshop manual.
13. Check for proper operation of the internal governor mechanism. See Table 6-1 for the appropriate
engine workshop manual.
14. Check compression and cylinder leak down and service a worn engine. See Table 6-1 for the ap-
propriate engine workshop manual.
15. Replace the genset controller (p. 5-1).
INVALID GENSET CONFIGURATION—CODE NO. 37
(The genset Controller is not configured properly for the genset )
Corrective Action:
1. Make sure the ends of the two leads marked CONFIG 1 and CONFIG2 in the control box are not
connected and that they are terminated with insulated connectors. See Page A-4 or A-5.
2. Reconfigure the genset controller (p. 2-8).
3. Replace the genset controller (p. 5-1).
Redistribution or publication of this document,
by any means, is strictly prohibited.
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