Navistar INTERNATIONAL DT 466 User Manual

324 7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Figure 390 BCP circuit diagram with breakout 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.
Circuit Checks for BCP Sensor – ECM to Valve Cover Gasket Connector (Use EST, DMM, 500 Ohm
Resistor Harness, and VC Gasket Breakout Harness to engine harness only.)
Test Condition Spec Checks
Harness disconnected from valve
cover gasket connector u sing
EST
0V
If voltage > 0.039 V, check BCP signal for short to V
REF
or B+.
Voltage from Pin B (Blue) of VC
Gasket Breakout Harness to
ground using DMM
5V±0.5V
If voltage > 5 .5 V, che ck V
REF
for short to B +. If voltage is
< 4.5 V, check V
REF
for open or short to ground.
500 Ohm Resistor Harness
connected between Pin A
(Green) and Pin B (Blue)
of VC
Gasket Breakout Harne
ss using
EST.
5V
If voltage < 4.9 V, check B
CP signal for open or short
to ground.
— Disconnect connector 92
60
1
. Measure resistance
from Pin A to Pin A of conn
ector 9260 (spec > 1 kΩ)
to check for short to gr
ound within wiring harness.
— D isconnect negative
battery cable. Measure
resistance from Pin A
to ground cable to check for
short to ground.
— U se a breakout box to
measure from Pin A to Pin
X2-11 (spec < 5 Ω)toc
heck for open in the harness.
Resistance from Pin C (Black) of
VC Gasket Breakout Harness to
<5Ω If resistance is > 5 Ω, check for open or high resistance
between ECM and UVC. Use a breakout box to measure
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