Navistar N9 Diagnostic Manual page 33

1 DIAGNOSTIC TROUBLESHOOTING PROCEDURES
Step 6 Engine no start, cold ambient temperature.
Attempt to start engine.
Does engine fail to start, specifically during cold ambient temperatures?
Step 7 Engine at operating temperature, no re-start.
A. Run engine to operating temperature.
B. Attempt to start engine at operating temperature.
Does engine fail to start, specifically after being run to operating temperature?
29
Pump (HPOP) Test (page
2227).
No, FDP out of
specification: Go to
8.1 Low Fuel Delivery
Pressure (page 2273).
No,: EGR out of
specification: Go to
SPN 2791 FMI 7 Fault
Code Diagnostics (page
1095).
Decision
Yes: Go to 2.2 Engine
No Start, Cold Ambient
Temperature (page 53).
No: Go to Step 7.
Decision
Yes: Go to 2.3 Engine at
Operating Temperature,
No Re-Start (page 54).
No: Go to 2.4 Engine
Never Starts (page 57).