10. Injection Control Pressure; Monitoring Icp And Bcp Using Est - Navistar International DT 466 Diagnostic/Troubleshooting Manual

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10. Injection Control Pressure

Figure 307
Purpose
To determine if the ICP system is providing enough
hydraulic pressure to operate the injectors
Tools
• EST with MasterDiagnostics® software
• EZ-Tech® interface cable
• ICP System Test Adapter
• Oil sample line with inline shut-off valve
• Socket or wrench (EOT sensor)

Monitoring ICP and BCP using EST

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.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
6 PERFORMANCE DIAGNOSTICS
possible death or damage to the engine or vehicle
– comply with the following:
When running the engine in the service bay, make
sure the parking brake is set, the transmission is
in neutral, and the wheels are blocked.
NOTE: If an EST is not available, use alternate test
procedures following this test.
1. See "DT 466 Performance Specifications" –
Figure 308 Road Performance.ssn
2. Open D_RoadPerformance.ssn to monitor engine
3. Turn the ignition switch to ON. Do not start engine.
4. Run engine at low idle, monitor ICP, and record
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
WARNING: To avoid serious personal injury,
Appendix A (page 595) or "DT 570 and HT 570
Performance Specifications" – Appendix B (page
619) for specifications and record on Diagnostic
Form.
operation.
Monitor KOEO Inject Ctrl Press (ICP). Record
results on Diagnostic Form.
• If injection control pressure is higher than
specification, the ICP sensor or circuitry may
be the cause.
This will cause a lower than normal injection
control pressure command.
Sensor" in Section 7.
• If injection control pressure is in KOEO
specification, continue to step 4.
reading on Diagnostic Form.
See "ICP