Navistar International DT 466 Diagnostic/Troubleshooting Manual page 474

470 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Connector Resistance Checks to Chassis Ground with Valve Cover Removed (Turn the ignition switch
to OFF. Disconnect chassis connector 9260
sensor. Use disconnected negative battery cable for ground test point.)
1 to gnd cable > 500 Ω
2 to gnd cable > 500 Ω
3 to gnd cable > 1 kΩ
Harness Resistance Checks With Valve Cover Removed (Connect breakout box [X1] to engine harness
only. Connect UVC Pressure Sensor Breakout Harness to UVC connector only.)
X1–6 to 1 < 5 Ω
X1–14 to 2 < 5 Ω
X1–20 to 3 < 5 Ω
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.
1
. Disconnect negative battery cable. Disconnect harness from
If < 500 Ω, check for short to ground.
If < 500 Ω, check for short to ground.
If < 1 kΩ, check for short to ground.
If > 5 Ω, check for open ground.
If > 5 Ω, check for open V
If > 5 Ω, check for open ICP signal.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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