Cmp Sensor (Camshaft Position) - Navistar International DT 466 Diagnostic/Troubleshooting Manual

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS

CMP Sensor (Camshaft Position)

Figure 409 Function diagram for the CMP sensor
The function diagram for the CMP sensor includes the
following:
• CMP sensor
• Electronic Control Module (ECM)
• Injector Drive Module (IDM)
• Fuel Injector
• ENGINE lamp (amber)
The CMP sensor provides the ECM with a signal that
indicates camshaft position. As the cam rotates, the
sensor identifies the position of the cam by locating
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
a peg on the cam. The CMP is installed in the front
cover, above and to the right of the water pump pulley.
Camshaft speed is calculated from the frequency of
the CMP sensor signal. Diagnostic information on the
CMP input signal is obtained by performing accuracy
checks on signal levels, frequency, and duty cycle with
software strategies.
NOTE:
International® DT 466, DT 570, and HT 570 diesel
engines, is the Crankshaft Position (CKP) sensor
used with other International® diesel engines.
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
The short CMP sensor,
355
used with