524 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
VGT Actuator (Variable Geometry Turbocharger)
Figure 498 Function diagram for the VGT actuator
The function diagram for the VGT actuator includes
the follow i ng:
• VGT actuator
• Electronic Control Module (ECM)
• Accelerator Peda l Positio n sensor and Idle
Validation Switch (APS/IVS)
• Barometric Absolute Pressure (BAP) sensor
• Camshaft Position (CMP) sensor
• Crankshaft Position (CKP) sensor
• Engine Coolant Te mperature (ECT) sensor
• Exhaust Gas Recirculation (EGR)
• Engine Oil Temperature (EOT) sensor
• Exhaust Back Pressure (EBP) sensor
• Injection Control Pressure (ICP) sensor
• Injection Pr essure Regulator (IPR)
• Manifold Absolute Pressure (MAP) sensor
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.
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