Service manual

9. Troubleshooting 9-2013
• Fault Code Nos. 1, 2, 3, and 4 are first level faults. Pay close attention to the pause
sequence to avoid interpreting first level faults as second-level Fault Codes Nos. 11, 22, 33
or 44.
• To avoid the possibility of anyone misinterpreting Code Nos. 3 and 4 as Code Nos. 33 and
44, the latter have not been assigned faults.
9.4 Restoring Fault Code Blinking
The fault code stops blinking after five minutes. Press Stop three times within three seconds to
restore fault code blinking.
NOTICE
The last fault logged will blink even though the condition that caused the shutdown may have
been corrected.
WARNING
Some Generator Set 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 Generator Set service.
9.5 Generator Set Starts or Stops Without Command -
No Fault Code
Logic: To start or stop - control receives ground at start or stop input on control, DC voltage
drops below 8V and controller de-energizes (shuts down in sleep mode)
Possible Causes: Low battery voltage, shorted harness connection, faulty start/stop switch,
“Standby Ready" is enabled, faulty or incorrect spark plugs.
Diagnosis and Repair:
1. Check last fault and record.
2. Measure battery voltage at battery and generator set.
3. Inspect battery connections and cables for cleanliness, tightness and damage: clean,
tighten and repair connections and cables as necessary.
4. Check electrolyte level and hydrometer reading in maintenance type batteries: replace
electrolyte and recharge or replace battery as necessary.
5. Disconnect generator set control J1 connector. Verify that the J1 pins are fully inserted and
inspect pin condition, using one of the processes listed below. Then insert, repair or
replace pins as necessary.
Pin Inspection Processes (use one of the following to inspect the pins):
Use the test points of the tester tool #420-0603
Use a mating pin connector
Use a pin gauge the same size (.045") as the mating control connector pin
Use any suitable device that will not damage the inside contact wipers of the pin socket
86 A030A239 (Issue 10)