Monitoring Bcp Using Vc Gasket Breakout Harness - Navistar International DT 466 Diagnostic/Troubleshooting Manual

272
Monitoring BCP using VC Gasket Breakout
Harness
NOTE: Do this procedure, if an EST is not available.
This is an alternate method.
Tools
• VC Gasket Breakout Harness
• DMM
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. See "DT 466 Performance Specifications" –
Appendix A (page 595) ,"DT 570 and HT 570
Performance Specifications" – Appendix B (page
619) or Section 7 "Operational Voltages Checks"
– for specifications and record on Diagnostic
Form.
Figure 353 Valve cover gasket
1. Front of engine
2. Pass-through connector for BCP sensor
3. Pass-through connector for brake shut-off valve
4. Pass-through connector for ICP sensor
2. Disconnect engine harness connector from the
pass-through connector for the BCP sensor and
complete steps 3 through 9.
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
6 PERFORMANCE DIAGNOSTICS
Figure 354
pass-through connector for BCP sensor
3. Connect VC Gasket Breakout Harness to the
4. Use DMM to measure BCP.
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. Secure the
DMM and leads in the cab so as not to obstruct
the operator.
5. Run DMM leads into cab.
6. Drive vehicle and make sure engine operating
7. Find a long, open stretch of road.
8. When driving conditions are safe, select a suitable
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
VC Gasket Breakout Harness to
pass-through connector for the BCP sensor and
engine harness.
• Connect POS to green (signal circuit) and
NEG to black (ground circuit).
WARNING: To avoid serious personal injury,
temperature reaches 70 °C (158 °F).
gear, press accelerator pedal fully to the floor, and
accelerate to rated speed at 100% load.