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 rotatin g parts (belts an d fan)
and hot engine surfaces.
1. Using EST, open the continuous monitor session.
To monitor signal voltage, run KOEO Continuous
Monitor Test.
Figure 378 Continuous Monitor Test
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
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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