Navistar International DT 466 Diagnostic/Troubleshooting Manual page 331

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Resistance from Pin 1 (Black) of
UVC Pressure Sensor Breakout
Harness to ECM chassis ground
(Pin A of connector 9260) using
DMM.
Connect BCP sensor to UVC connection. Use the EST to clear DTCs. If test results are to spec for all test
conditions, but an active code remains, replace sensor.
NOTE: If all tests are to specification, but DTCs return when the valve cover is torqued down, replace the
valve cover gasket.
1
Connector 9260 is a 2-wire connector usually located in the battery box. Pin A is the chassis ground connection for the
ECM and IDM. See truck Chassis Electrical Circuit Diagram Manual for complete chassis side ECM and IDM ground
circuit information.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
< 5 Ω If resistance is > 5 Ω, check for open or high resistance
between ECM and UVC connector. Use a breakout box
to measure resistance from X1-6 to Pin 1 (spec < 5 Ω).
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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