Navistar International DT 466 Diagnostic/Troubleshooting Manual page 321

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
2 to gnd cable
> 1 kΩ
3 to gnd cable > 1 kΩ
Harness Resistance Checks (Connect breakout box to chassis harness [X3 and X4 only].)
X4-24 to 1 < 5 Ω
X4–4 to 2 < 5 Ω
X3–24 to 3 < 5 Ω
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. See truck Chassis Electrical Circuit Diagram Manual for complete chassis side ECM and IDM ground
circuit information.
Operational Voltage Checks for BAP Sensor (Check with breakout box connected [X3 and X4 only] to
ECM and chassis harness.)
Test Point Voltage
X3–24 to X4–24 4.89 V
X3–24 to X4–24 4.60 V
X3–24 to X4–24 2.60 V
BAP Diagnostic Trouble Codes
DTC 151 = Signal voltage was > 4.95 V for more than 0.5 second
DTC 152 = Signal voltage was < 1.0 V for more than 0.5 second
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
If < 1 kΩ, check for V
If < 1 kΩ, check for signal short to ground.
If > 5 Ω, check for open signal ground.
If > 5 Ω, check for open V
If > 5 Ω, check for open signal circuit.
Pressure
105 kPa (31 in Hg)
100 kPa (29.5 in Hg)
60 kPa (17.7 in Hg)
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
short to ground.
REF
.
REF
Comment
High atmospheric pressure.
Normal atmospheric pressure at sea level.
Normal atmospheric pressure at 10,000 feet.
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