Isuzu 2008MY N Series, Руководство по ремонту

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1A-162 Engine Control System (4HK1)
DTC P0341 (Flash Code 14)
Circuit Description
The camshaft position (CMP) sensor is installed on the
cylinder head at the rear of the camshaft gear. The
CMP sensor detects total of five holes per one engine
cycle (four holes arranged equally every 90
°
and one
reference hole on the camshaft gear surface). The
ECM monitors both crankshaft position (CKP) sensor
and CMP sensor signal pulses to ensure they correlate
with each other. If the ECM receives extra or missing
CMP sensor signal pulse, this DTC will set.
Condition for Running the DTC
• DTCs P0016, P0335, P0336 and P0340 are not
set.
• The ignition switch is ON.
• The CMP sensor signal pulse is detected.
Condition for Setting the DTC
• The ECM detects extra or missing CMP sensor
signal pulses during engine rotations.
Action Taken When the DTC Sets
• The ECM illuminates the MIL when the diagnostic
runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
Condition for Clearing the DTC
• Refer to DTC Type Definitions for Condition for
Clearing the MIL/ DTC - Type A.
Diagnostic Aids
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.
• Electromagnetic interference in the CMP sensor
circuits may set this DTC.
• An intermittent CMP sensor signal pulse may set
this DTC.
• Ensure the sensor is tight and the camshaft gear
are not damaged.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0341
Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check
- Engine Controls?
—
Go to Step 2
Go to Diagnostic
System Check -
Engine Controls
2
1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine. If the engine does not start,
crank over the engine for 10 seconds.
4. Monitor the DTC Information with a scan tool.
Is DTC P0340 or P0651 also set?
—
Go to Applicable
DTC Go to Step 3
3
1. Inspect all of the circuits going to the camshaft
position (CMP) sensor for the following
conditions:
• Routed too closely to fuel injection wiring
or components
• Routed too closely to after-market add-
on electrical equipment
• Routed too closely to solenoids and
relays
2. If you find incorrect routing, correct the
harness routing.
Did you find and correct the condition?
—
Go to Step 7 Go to Step 4
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