Navistar International DT 466 Diagnostic/Troubleshooting Manual page 429

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Harness Resistance Checks from EGR Drive Module to EGR Actuator (Turn the ignition switch to
OFF. Disconnect harness from EGR drive module and EGR actuator. NOTE: Test points are EGR drive
module to EGR actuator.)
Pin 6 to Pin 8 < 5 Ω
Pin 7 to Pin 7 < 5 Ω
Pin 8 to Pin 6
< 5 Ω
Pin 12 to Pin 1 < 5 Ω
Pin 13 to Pin 4 < 5 Ω
Pin 14 to Pin 3 < 5 Ω
Pin 15 to Pin 2 < 5 Ω
Pin 16 to Pin 5
< 5 Ω
1
Connector 9260 is a 2-wire connector usually located in the battery box. Pin A is the ground connection for the ECM
and IDM. See truck Chassis Electrical Circuit Diagram Manual for complete chassis side ECM and IDM ground circuit
information.
WARNING: To avoid serious personal injury, possible death, or damage to the engine or vehicle,
make sure the transmission is in neutral, parking brake is set, and wheels are blocked before doing
service bay diagnostics on engine or vehicle.
Harness Resistance Checks from EGR Drive Module to 12–pin Connector (Turn the ignition switch to
OFF. Disconnect harness at EGR drive module and 12–pin connector.)
Test Point Spec
Pin 1 to Pin 10 < 5 Ω
Pin 2 to Pin 4 < 5 Ω
Harness Resistance Checks from EGR Drive Module to ECM (Turn the ignition switch to OFF. Disconnect
harness at EGR drive module and ECM connector X2. Connect breakout box X2 to engine harness only.)
Pin 3 to Pin X2–6 < 5 Ω
Pin 4 to Pin X2–13 < 5 Ω
EGR Actuator Diagnostic Trouble Codes (DTCs)
DTC 163 = EGR drive module detects position signal fault.
DTC 365 = EGR drive module detects actuator fault.
DTC 368 = ECM did not receive EGR drive module communication for more than one second.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
If > 5 Ω, open circuit or high resistance to MTR U.
If > 5 Ω, open circuit or high resistance to MTR V.
If > 5 Ω, open circuit or high resistance to MTR W.
If > 5 Ω, open circuit or high resistance to position sensor power.
If > 5 Ω, open circuit or high resistance to position sensor U.
If > 5 Ω, open circuit or high resistance to position sensor V.
If > 5 Ω, open circuit or high resistance to position sensor W.
If > 5 Ω, open circuit or high resistance to position sensor ground.
Comment
If > 5 Ω, open circuit or high resistance to actuator power.
If > 5 Ω, open circuit or high resistance to actuator ground.
If > 5 Ω, open circuit or high resistance to CAN 2 positive.
If > 5 Ω, open circuit or high resistance to CAN 2 negative.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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