(Table 79, contd)
Troubleshooting Test Steps
Values Results
6. Circuit Protection
A. Inspect the wires and connectors to all circuit protection for
the engine.
B. Check the device for circuit protection.
Circuit
protection
Result The circuit protection device is tripped.
Repair: Reset the circuit breakers if the circuit breakers are
tripped. If necessary, replace blown fuses. Prior to returning
the engine to service, determine the condition that caused the
circuit breaker to trip or the fuse to blow. Make the necessary
repairs.
Result The circuit protection device is OK.
Proceed to Test Step 7.
8. Engine Speed/Timing Sensors
A. Inspect the connectors for the engine speed/timing sensors.
B. Crank the engine. If the engine starts and no speed timing co-
des are logged, the speed timing circuit is operating correctly.
Speed/Timing Result: The Speed/Timing sensor circuit is not operating
correctly.
Repair: Test the speed/timing circuit. Refer to Troubleshoot-
ing, “Speed/Timing `- Test”. Verify that the repair eliminated
the fault.
If the fault is still present, contact the Dealer Solutions Net-
work (DSN).
i06157543
Engine Stalls at Low RPM
Probable Causes
• Diagnostic codes
• Accessory equipment
• Power mode control (if equipped)
• Fuel supply
• Low compression (cylinder pressure)
• Electronic unit injectors
Recommended Actions
Note: The procedures have been listed in order of
probability. Complete the procedures in order.
UENR4469-36 159
Symptom Troubleshooting
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