Ecl Sensor (Engine Coolant Level) - Navistar International DT 466 Diagnostic/Troubleshooting Manual

370 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS

ECL Sensor (Engine Coolant Level)

Figure 418 Function diagram for the ECL system
The ECM monitors engine coolant level and alerts
the operator when coolant is low. The ECM can be
programmed to shut the engine off when coolant is
low.
The ECL system includes the Electronic Control
Module (ECM) and the engine coolant tank with a
coolant level sensor. The ECL switch is used in the
plastic deaeration tank.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Coolant level monitoring is a customer programmable
feature that can be programmed by the EST. The
coolant level feature is operational if programmed
for 3-way warning or 3-way protection. The feature
can not be enabled if the ECM was not factory
programmed for 3-way protection.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.