Aps/Ivs Operational Diagnostics - Navistar International DT 466 Diagnostic/Troubleshooting Manual

304 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS

APS/IVS Operational Diagnostics

Figure 377 APS/IVS circuit diagram
WARNING: To avoid serious personal injury,
possible death, or damage to the engine or vehicle
– comply with the following:
Be careful to avoid rotating parts (belts and fan)
and hot engine surfaces.
1. Using EST, open the continuous monitor session.
To monitor signal voltage, run KOEO Continuous
Monitor Test.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Figure 378
2. To monitor signal voltage, run KOEO Continuous
Monitor Test. For help, see "Continuous Monitor
Test" in Section 3 (page 68).
3. Monitor APS signal voltage. Verify an active DTC
for the APS/IVS circuit.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Continuous Monitor Test