Navistar International DT 466 Diagnostic/Troubleshooting Manual page 557

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Harness Resistance Check – WIF Connector to ECM (Turn the ignition switch to OFF. Connect breakout
box to chassis harness only. Disconnect sensor.)
X1–14 to B < 5 Ω
X2–9 to A < 5 Ω
Operational Voltage Checks for WIF Sensor (Check with breakout box connected to ECM and engine
harness and WIF sensor connected. Turn the ignition switch to ON.)
X2–9 to gnd 0 V to 2.5 V
WIF Diagnostic Trouble Codes
DTC 153 = Signal voltage was > 4.5 V
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. Refer to 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.
If > 5 Ω, check for open V
If > 5 Ω, check for open signal wire.
Voltage is 2.5 V with water in fuel. Voltage 0 V without water in fuel
(use breakout box).
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
circuit.
REF
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