Navistar International DT 466 Diagnostic/Troubleshooting Manual page 441

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Circuit Checks for EOT Sensor (Use EST, breakout harness, 3-Banana Plug Harness, and 500 Ohm
Resistor Harness.)
Test Condition
Sensor disconnected
3-Banana Plug Harness connected
between Pin 2 (Green) and Pin 1
(Black) of breakout harness
500 Ohm Resistor Harness
connected between Pin 2 (Green)
and Pin 1 (Black) of breakout
harness
Connect engine harness to sensor. Use the EST to clear DTCs. If an active code remains after
checking test conditions, replace the EOT sensor.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Spec Checks
> 4.78 V If voltage < 4.78 V, check signal circuit for short to
ground.
0 V
If voltage is > 0.2 V, check ground and signal circuit
for open or high resistance. Use a breakout box and
measure resistance from Pin 1 to Pin X1–6 and from
Pin 2 to X2–1 (spec < 5 Ω).
< 1.0 V
If voltage > 1.0 V, check signal circuit for short to V
B+, or another sensor's signal voltage.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
437
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