Isuzu 2000 Trooper Workshop Manual page 1155

6E–286
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0341 – CMP Sensor Circuit Performance
Step
1 Was the "On-Board Diagnostic (OBD) System Check"
performed?
2 1. Ignition "ON."
2. Review and record Tech 2 Failure Records data.
3. Operate the vehicle within Failure Records
conditions as noted.
4. Using a Tech 2, monitor "DTC" info for DTC P0341
until the DTC P0341 test runs.
5. Note the test result.
Does the Tech 2 indicate DTC P0341 failed this
ignition?
3 1. Disconnect the CMP sensor.
2. Measure the voltage between the sensor feed
circuit and the sensor ground circuit at the CMP
sensor harness connector.
Does the voltage measure near the specified value?
4 Measure the voltage between the CMP sensor signal
circuit and the sensor ground circuit at the CMP sensor
harness connector.
Does the voltage measure near the specified value?
5 If the voltage measured in step 3 was less than 4-6
volts, proceed directly to step 6 without completing this
step.
If the voltage in step 3 was greater than 4-6 V, repair the
short to voltage in the CMP feed circuit.
Is the action complete?
6 1. Check for poor connections at the camshaft
position sensor.
2. If a problem is found, repair it as necessary.
Was a problem found?
7 1. Ignition "OFF," disconnect the PCM and the CMP
sensor.
2. Check the following circuits for an open between the
ignition control module and the CMP sensor:
D
The sensor feed circuit.
3. If a problem is found, repair as necessary.
Was a problem found?
8 1. Ignition "OFF," disconnect the PCM (leave the CMP
sensor disconnected).
2. Ignition "ON," check the following circuits:
D
The CMP sensor signal circuit for an open or a
short to voltage.
D
The CMP sensor input signal circuit for a short
to ground.
3. If a problem is found, repair it as necessary.
Was a problem found?
9 Check for a short or open in the sensor ground circuit.
Was a problem found?
Action Value(s) Yes
— Go to Step 2
— Go to Step 3
4-6 V Go to Step 4
4-6 V Go to Step 11
— Verify repair
— Verify repair
— Verify repair
— Verify repair
— Verify repair
No
Go to OBD
System
Check
Refer to
Diagnostic
Aids
Go to Step 5
Go to Step 8
—
Go to Step 7
Go to Step 9
Go to Step 9
Go to Step 10