Navistar International DT 466 Diagnostic/Troubleshooting Manual page 166

162
WARNING: To avoid serious personal
injury, possible death, or damage to the
engine or vehicle – comply with the following:
When routing DMM leads, do not crimp the
leads, run the leads too close to moving parts,
or let the leads touch hot engine surfaces.
4. Use DMM to measure brake control pressure
(BCP signal voltage) KOEO.
• Connect POS to green (signal circuit) and
NEG to black (signal ground).
5. Record KOEO reading on Diagnostic Form.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
5 HARD START AND NO START DIAGNOSTICS
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
6. Take another measurement while cranking engine
for 20 seconds.
7. Record reading on Diagnostic Form and compare
KOEO reading.
• If BCP cranking signal voltage is significantly
more than KOEO BCP signal voltage,
when engine brake is inactive, diagnose
BCP sensor, circuit, and engine brake
components.
• If BCP cranking signal voltage is equal to
KOEO BCP, signal voltage BCP is not a
problem.
EGES-270-1