Mat Operational Diagnostics - Navistar International DT 466 Diagnostic/Troubleshooting Manual

510 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS

MAT Operational Diagnostics

Figure 490 MAT 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 D_ContinuousMonitor.ssn.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Figure 491
2. To monitor signal voltage, run KOEO Continuous
Monitor Test. For help, see "Continuous Monitor
Test" in Section 3 (page 68).
3. Monitor MAT signal voltage. Verify an active DTC
for the MAT circuit.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Continuous Monitor Test