Navistar International DT 466 Diagnostic/Troubleshooting Manual page 423

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
EGR Actuator Resistance Checks Only (Turn the ignition switch to OFF. Disconnect harness from
actuator. Connect breakout harness to actuator only. Note: Ensure DMM and leads are zeroed.)
1 to 2 > 1 kΩ
1 to 3 > 1 kΩ
1 to 4 > 1 kΩ
1 to 5
> 1 kΩ
5 to 2 > 1 kΩ
5 to 3 > 1 kΩ
5 to 4 > 1 kΩ
6 to 7 2.1 Ω ±0.5 Ω
6 to 8
2.1 Ω ±0.5 Ω
7 to 8
2.1 Ω ±0.5 Ω
EGR Actuator Harness Connector Resistance Checks to ECM Chassis Ground (Turn the ignition
switch to OFF. Disconnect harness from actuator. Connect breakout harness to engine harness only.
Disconnect chassis connector 9260
1 to Pin A (9260) > 1 kΩ
2 to Pin A (9260) > 1 kΩ
3 to Pin A (9260) > 1 kΩ
4 to Pin A (9260) > 1 kΩ
5 to Pin A (9260) < 5 Ω
6 to Pin A (9260) > 1 kΩ
7 to Pin A (9260) > 1 kΩ
8 to Pin A (9260) > 1 kΩ
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
If < 1 kΩ, short to sensor power exists.
If < 1 kΩ, short to sensor power exists.
If < 1 kΩ, short to sensor power exists.
If < 1 kΩ, short to sensor power exists.
If < 1 kΩ, short to sensor power exists.
If < 1 kΩ, short to sensor power exists.
If < 1 kΩ, short to sensor power exists.
If not in spec, replace actuator.
If not in spec, replace actuator.
If not in spec, replace actuator.
1
.)
If < 1 kΩ, short to ground exists.
If < 1 kΩ, short to ground exists.
If < 1 kΩ, short to ground exists.
If < 1 kΩ, short to ground exists.
If > 5 Ω, an open circuit exists or high resistance. Specification is based
on 4300 chassis. For other applications, see Chassis Electrical Circuit
Diagram Manual for complete chassis ground circuit information.
If < 1 kΩ, short to ground exists.
If < 1 kΩ, short to ground exists.
If < 1 kΩ, short to ground exists.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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