Navistar INTERNATIONAL DT 466 User Manual

364 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
EBP Pin-Point Diagnostics
Connector Voltage Checks to Ground (Disconnect harness from sensor. Inspect for bent pins or corrosion.
Connect breakout harness to engine harness only. Turn the ignition switch to ON.)
Test Point
Spec Comment
1 to gnd 0 V to 0.25
V
Signal ground (no volt ag e expected). If > 0.25 V, che ck ground circ uit fo r
open or high resistance and check signal ground for short to V
REF
or B+.
2tognd 5V±0.5V
If voltage is not to spec, V
REF
is open or shorted to ground.
3 to gnd 0 V to 0.25
V
If > 0.25 V, signal circuit is shorted to V
REF
or B+.
Connector Resistance Checks to ECM Chassis Ground (Turn the ignition switch to OFF. Connect
breakout harness to engine harness only. Disconnect chassis connector 9260
1
.)
1 to Pin A (9260) < 5 Ω If > 5 Ω, check for open circuit.
2 to Pin A (9260) > 500 Ω If < 500 Ω,checkforshorttogroundwithinwiringharness.
3 to Pin A (9260) > 1 k Ω If < 1 kΩ, check for short to ground within wiring harness.
WARNING: To avoid serious personal injury, possible death, or damage to the engine or vehicle,
always disconnect main negative battery cable first. Always connect the main negative battery cable
last.
Connector Resistance Checks to Chassis Ground (Turn the ignition switch to OFF. Disconnect chassis
connector 9260
1
. Disconnect negative battery cable. Disconnect harness from sensor. Use disconnected
negative battery cable for ground test point.)
1 to gnd cable
>500Ω If < 500 Ω, check for short to ground.
2 to gnd cable
>500Ω If < 500 Ω, check for short to ground.
3 to gnd cable
>1kΩ If < 1 kΩ, check for short to ground.
Harness Resistance Checks (Conn
ect breakout box [X1 and X2] to engine harness only. Connect
breakout harness to engine harn
ess only.)
X1–6 to 1
<5Ω If > 5 Ω, check for open ground wire.
X1–14to2
<5Ω If > 5 Ω, check for open V
REF
wire.
X2–8 to 3
<5Ω If > 5 Ω, check for open signa
lwire.
1
Connector 9260 is a 2-wi re co
nnector usually located in the battery box. Pin A is the chassis gro und connecti on for the
ECM and IDM. See truck Chassis Electrical Circuit Diagram Manual for complete chassis side ECM and IDM g round
circuit information.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.

Navistar INTERNATIONAL DT 466 Specifications

General

Brand	Navistar
Model	INTERNATIONAL DT 466
Category	Engine
Language	English