156 5 HARD START AND NO START DIAGNOSTICS
Figure 180 Close session
7. When finished with this test, clo se t he V IN+
session. Select Session from menu bar, then
Close.
Possible Causes
• Injector wiring harness open or shorted
• Under Valve Cover (UVC) wiring
• Valve cover gasket
• Faulty wiring harne ss connection on injector coil
• Failed injector coil
• Failed I njector D rive Mo dule (IDM)
• Failed ECM (not sending test request to IDM)
Hard Start and No Start Only
• Faulty wiring C AN2 datalink
• Faulty wiring IDM power and ground
• Faulty wiring IDM main power rela y
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any proced ures.
Follow all warnings, cautions, and notes.
©August 2008 Navistar, Inc.
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