Navistar International DT 466 Diagnostic/Troubleshooting Manual page 169

Figure 190 Breakout box
6. Connect DMM leads to breakout box.
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.
7. Use DMM to measure KOEO values for the
following:
• V (DMM set to DC V)
BAT
— POS X3–3 to NEG X3–7 (V
— POS X4–1 to NEG X3–6 (ECM PWR)
— POS X4–2 to NEG X3–7 (ECM PWR)
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
5 HARD START AND NO START DIAGNOSTICS
Pwr)
IGN
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
• rpm (DMM set to DC mV Hz)
— POS X1–1 to NEG X3–7 (CKP)
• rpm (DMM set to DC mV rpm
— POS X1–9 to NEG X3–7 (CMP)
• ICP (DMM set to DC V)
— POS X1–20 to NEG X1–6
• EOP (DMM set to DC V)
— POS X2–7 to NEG X1–6
• BCP (DMM set to DC V)
— POS X2 –11 to NEG X1– 6
8. Record KOEO reading on Diagnostic Form.
9. Take another measurement while cranking engine
for 20 seconds.
• If ECM voltage is below specification, see
"Electronic Control Module Power (ECM
PWR)" in Section 7 (page 381).
• If CKP DCmV Hz is not in specification during
crank, see "CKP Sensor" in Section 7 (page
351).
• If CMP DCmV RPM2 is not in specification
during crank, see "CMP Sensor" in Section 7
(page 355).
• If EOP is not in specification during crank, see
"Low Oil Pressure" in Section 4 (page 128).
• If BCP is not in specification during crank, see
"BCP" Sensor" in Section 7 (page 457).
• If all measurements are in specification,
continue with the next diagnostic test.
10. Record readings on Diagnostic Form.
EGES-270-1
165
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