Navistar INTERNATIONAL DT 466 User Manual

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS 281
EWPS Operational Diagnostics..................................................................441
IAH System (Inlet Air Heater)...............................................................................444
IAH Circuit Operation..............................................................................445
IAH Pin-Point Diagnostics.........................................................................447
IAT Sensor (Intake Air Temperature)......................................................................451
IAT Circuit Operation...............................................................................452
IAT Operational Diagnostics......................................................................453
IAT Pin-Point Diagnostics..... . ...... . . ..... . . ...... . . ..... . . ...... . ....... . ....... ....... ........455
ICP Sensor (Injection Control Pressure).................................................................457
ICP Circuit Operation...............................................................................458
ICP Operational Diagnostics......................................................................460
ICP Pin-Point Diagnostics (ECM to valve cover gasket connector).......................465
ICP Pin-Point Diagnostics (ECM to ICP Sensor– valve cover removed).. .... .. . ... ... . ..469
ICP System (Injection Control Pressure).................................................................472
ICP System Operation..............................................................................472
IDM PWR (Injection Driver Module Power)...............................................................479
IDM PWR Circuit Operation.......................................................................480
IDM PWR Pin-Point Diagnostics.................................................................482
INJ Circuits (Injector Drive).................................................................................489
INJ Circuit Operation...............................................................................489
INJ Pin-Point Diagnostics..... ........ ....... . ....... . ...... . . ...... . . ...... . . ...... . ....... ......490
IPR (Injection Pressure Regulator)........................................................................494
IPR Circuit Operation...............................................................................495
IPR Pin-Point Diagnostics.........................................................................496
IST System (Idle Shutdown Timer)........................................................................497
IST Operation........................................................................................497
MAP Sensor (Manifold Absolute Pressure)..............................................................500
MAP Circuit Operation.............................................................................501
MAP Operational Diagnostics....................................................................503
MAP Pin-Point Diagnostics..... ..... .............................................................505
MAT Sensor (Manifold Air Temperature).................................................................508
MAT Circuit Operation.............................................................................509
MAT Operational Diagnostics.....................................................................510
MAT Pin-Point Diagnostics........................................................................512
RSE (Radiator Shutter Enable).............................................................................514
RSE Circuit Operation............................................................................. 515
RSE Pin-Point Diagnostics........................................................................516
SCCS (Speed Control Command Switches).............................................................519
SCCS Circuit Operation............................................................................519
Tachometer Output Circuit..................................................................................522
Tachometer Pin-Point Diagnostics..............................................................523
VGT Actuator (Variable Geometry Turbocharger)......................................................524
VGT Circuit Operation............................................................................. 526
VGT Pin-Point Diagnostics........................................................................528
V
REF
(Reference Voltage).....................................................................................539
V
REF
Circuit Operation...............................................................................540
V
REF
Pin-Point Diagnostics.........................................................................542
VSS (Vehicle Speed Sensor)................................................................................544
VSS Circuit Operation (Manual and Allison Transmissions)................................545
VSS Pin-Point Diagnostics (Manual Transmissions).........................................547
VSS Pin-Point Diagnostics (Allison Transmissions).........................................549
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.

Navistar INTERNATIONAL DT 466 Specifications

General

Brand	Navistar
Model	INTERNATIONAL DT 466
Category	Engine
Language	English