Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1338
11.
(K844) CAMSHAFT POSITION SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO THE (K944)
CAMSHAFT POSITION SENSOR GROUND CIRCUIT
Measure the resistance between the (K844) CMP Sensor 5-Volt Supply
circuit and the (K944) CMP Sensor Ground circuit at the CMP Sensor
harness connector.
Is the resistance above 1000 ohms?
Yes
>> Replace and program the Engine Control Module in accor-
dance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
No
>> Repair the (K844) CMP Sensor 5-Volt Supply Circuit and
(K944) CMP Sensor Ground circuits for a short together.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
12.
(K44) CAMSHAFT POSITION SENSOR SIGNAL CIRCUIT OPEN
Turn the ignition off.
Disconnect the CMP Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the (K44) CMP Sensor Signal circuit between
the ECM harness connector and the CMP Sensor harness connector.
Is the resistance below 10.0 ohms?
Yes
>> Go To 13
No
>> Repair the (K44) CMP Sensor Signal circuit for an open
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
9 - 1376
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
13.
(K44) CAMSHAFT POSITION SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (K44) CMP Sensor
Signal circuit at the CMP Sensor harness connector.
Is the resistance above 1000 ohms?
Yes
>> Go To 14
No
>> Repair the (K44) CMP Sensor Signal circuit for a short to
ground.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
14.
(K44) CAMSHAFT POSITION SENSOR SIGNAL CIRCUIT
SHORTED TO THE (K944) CAMSHAFT POSITION SENSOR
GROUND CIRCUIT
Measure the resistance between the (K44) CMP Sensor Signal circuit
and the (K944) CMP Sensor Ground circuit at the CMP Sensor harness
connector.
Is the resistance above 1000 ohms?
Yes
>> Replace and program the Engine Control Module in accor-
dance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
No
>> Repair the (K44) CMP Sensor Signal circuit and the (K944)
CMP Sensor Ground circuit for a short together.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1377
P0401- EGR SYSTEM PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the engine running.
•
Set Condition:
The ECM detects and EGR flow problem for 8.0 seconds
Possible Causes
INTERMITTENT CONDITION
EGR VALVE
INTAKE OR EXHAUST SYSTEM PROBLEM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
VERIFY ACTIVE DTC
With the scan tool, erase ECM DTC’s
Test drive the vehicle.
With the scan tool, read ECM DTC’s
Did this DTC set again?
Yes
>> Refer to symptom CHECKING THE EGR SYSTEM for further diagnosis.
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
9 - 1378
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
P0402- EGR EXCESSIVE FLOW DETECTED
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the engine running.
•
Set Condition:
The ECM detects and EGR flow problem for 8.0 seconds
Possible Causes
INTERMITTENT CONDITION
EGR VALVE
INTAKE OR EXHAUST SYSTEM PROBLEM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
VERIFY ACTIVE DTC
With the scan tool, erase ECM DTC’s
Test drive the vehicle.
With the scan tool, read ECM DTC’s
Did this DTC set again?
Yes
>> Refer to symptom CHECKING THE EGR SYSTEM for further diagnosis.
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1379
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