Navistar International DT 466 Diagnostic/Troubleshooting Manual page 191

Figure 223 Actuator Breakout Harness to IPR
1. IPR valve
2. Actuator Breakout Harness
Procedure
WARNING: To avoid serious personal injury,
possible death, or damage to the engine or
vehicle, read all safety instructions in the "Safety
Information" section of this manual.
1. Disconnect engine wiring harness connector from
IPR valve and inspect engine harness terminals
and IPR valve for corrosion, bent pins, or pins
pushed back.
• If the harness connector or the IPR valve is
corroded, replace the harness connector and
IPR valve. Retest injection control pressure.
• If pins are bent or pushed back, repair as
necessary. Retest injection control pressure.
If the wiring harness connector and the IPR
•
valve are not corroded or damaged, continue
with step 2.
2. Connect Actuator Breakout Harness to IPR. Do
not connect engine harness.
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.
CAUTION: If the engine harness is connected to
the actuator breakout harness, the ignition switch
fuse will blow or cause damage to wiring harness.
Figure 224 B+ on power distribution terminal
Figure 225 Ground to terminal on cowl
3. Apply B+ volts and ground to the IPR valve.
EGES-270-1
187