Isuzu 2000 Trooper Workshop Manual page 1153

6E–284
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0341 CMP Sensor Circuit Performance
Circuit Description
The CMP signal is produced by the camshaft position
(CMP) sensor pulses when the engine is running and
crankshaft position (CKP) sync pulses are also being
received. The powertrain control module (PCM) uses the
CMP signal pulses to initiate sequential fuel injection.
The PCM constantly monitors the number of pulses on
the CMP signal circuit and compares the number of CMP
pulses to the number of 58X reference pulses received. If
the PCM receives an incorrect number of pulses on the
CMP reference circuit, DTC P0341 will set and the PCM
will initiate injector sequence without the CMP signal with
a one in six chance that injector sequence is correct. The
engine will continue to start and run normally, although
the misfire diagnostic will be affected if a misfiring
condition occurs.
Conditions for Setting the DTC
D The engine is running (1X CMP reference pulses are
being received).
D The CMP sensor signal is not detected at the correct
interval every 6 cylinders.
D Above condition fails for 100 occurrences within 200
test samples.
Action Taken When the DTC Sets
D The PCM will illuminate the malfunction indicator lamp
(MIL) after the second consecutive trip in which the
fault is detected.
D The PCM will initiate the injector sequence without the
CMP signal with a one in six chance that the injector
sequence is correct.
D The PCM will store conditions which were present
when the DTC was set as Freeze Frame and in the
Failure Records data.
D06RY00066