7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS 365
Operational Voltage Checks for EBP with Breakout Harness (Check with breakout harn
ess connected to
sensor and engine harness.)
Test Point Voltage Pressure
3(Green)to1(Black)
0.63 V
0kPa(0psi)
3(Green)to1(Black)
1.20 V
55kPa(8psi)
3(Green)to1(Black)
1.92 V
124kPa(18psi)
Operational Voltage Checks for EBP with Breakout Box (Check with br
eakout box connected [X1 and X2
only] to the ECM and engine harness.)
X2–8 to X1–6 0.63 V
0kPa(0psi)
X2–8 to X1–6 1.20 V
55kPa(8psi)
X2–8 to X1–6 1.92 V
124kPa(18psi)
EBP Diagnostic Trouble Codes
DTC 341 = Signal voltage was < 0.039 V for m ore tha n 0.5 second
DTC 342 = Signal voltage was > 4.9 V for more than 0
.5 second
DTC 344 = Exhaust back pressure was > expected with key-on engine-off
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.
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