5 HARD START AND NO START DIAGNOSTICS 197
15. Inlet Air Heater System
Figure 248
Purpose
To determine if the Inlet Air Heater assembly is
operating correctly
Tools
• EST with MasterDiagnostics® software
• EZ-Tech® interface cable
• Digital Multimeter (DMM)
•AmpClamp
15.1 – Current Amperage Draw
Procedure
WARNING: To avoid serious personal injury,
possible death, or damage to the engine or
vehicle, read all safety instructi on s in the “Safety
Information” section of this manual.
NOTE: Inspect for damaged, loose or corroded
terminals. Repair if necessary.
Figure 249 Amp C lamp
1. Install Amp Cla mp around one o f the two feed
wires.
2. Turn the ignition s witc h to O N.
Figure 250 Inlet Air Heater Output State Test
NOTE: When using t he EST to do KOEO or KOER
diagnostic tests, Standard Test is always selected
and run fi rst. If the ignition switch is not cycled, the
Standard Test does not have to be run again.
3. Select Diagnostics from the m enu bar.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
©August 2008 Navistar, Inc.
To Next Page
Loading...
Need help?
General