Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1330
P0299-TURBOCHARGER UNDERBOOST CONDITION
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the engine running and the ECM attempting to govern turbocharger boost pressure.
•
Set Condition:
The Boost Pressure Sensor indicates actual turbocharger boost is less than the ECM setpoint for engine
boost.
Possible Causes
INTERMITTENT DTC
CLOGGED AIR FILTER
INTAKE AIR RESTRICTION
INTAKE AIR LEAK
BOOST PRESSURE SERVO MOTOR
TURBOCHARGER
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
Turn the ignition on.
With the scan tool, Clear DTCs in the Engine Control Module (ECM).
Test drive the vehicle.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Go To 2
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
2.
CHECK THE AIR FILTER
Turn the ignition off.
Remove and inspect the Air Filter for soiling or excessive dirt and debris which may cause air flow restriction.
Were any of these problems found?
Yes
>> Replace the Air Filter element
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 3
3.
CHECK FOR INTAKE SYSTEM RESTRICTIONS
NOTE: Damaged, restricted or poorly connected intake and turbocharger related tubes can cause this DTC
to set.
Turn the ignition off.
Inspect all air intake, crankcase vent and turbocharger related hoses/tubes and connections.
Were any problems found?
Yes
>> Repair or replace as necessary.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 4
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
4.
CHECK FOR INTAKE SYSTEM AIR LEAKS
Remove the Crankcase Vent Heater.
Remove the Mass Air Flow Sensor from the turbocharger inlet tube.
Seal off and/or plug the turbocharger inlet tube where the MAF sensor was removed.
Connect smoke machine 84–04 to the Crankcase Vent Heater port in the intake duct and begin injecting smoke into
the intake system.
Observe all intake system components for evidence of smoke leakage.
Is there evidence of smoke leakage?
Yes
>> Repair or replace as necessary.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 5
5.
REPLACE THE BOOST PRESSURE SERVO MOTOR
Replace the Boost Pressure Servo Motor in accordance with the Service Information.
NOTE: Ensure the Boost Pressure Servo Motor and ECM harness connectors are connected.
Test drive the vehicle.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Replace the Turbocharger assembly in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Test complete.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1345
P0335-CRANKSHAFT POSITION SENSOR CIRCUIT
For a complete wiring diagram Refer to Section 8W
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
•
When Monitored:
With the engine cranking or running
•
Set Condition:
The Engine Control Module (ECM) does not receive a signal from the Crankshaft Position Sensor when the
Camshaft Position Sensor indicates engine rpm.
Possible Causes
(K853) CKP SENSOR 5-VOLT SUPPLY CIRCUIT OPEN
(K24) CRANKSHAFT POSITION SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
CHECKING (K853) CKP SENSOR 5-VOLT SUPPLY CIRCUIT
DAMAGED CKP SENSOR OR CRANKSHAFT
ECM
(Z753) CKP SENSOR GROUND CIRCUIT OPEN
INTERMITTENT CONDITION
(K24) CKP SENSOR SIGNAL CIRCUIT OPEN
(K853) CKP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K24) CKP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
CRANKSHAFT POSITION SENSOR
(Z753) CKP SENSOR GROUND CIRCUIT OPEN
(K853) CKP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO THE (Z753) CKP SENSOR GROUND CIRCUIT
(K24) CKP SENSOR SIGNAL CIRCUIT SHORTED TO THE (Z753) CKP SENSOR GROUND CIRCUIT
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
VERIFY ACTIVE DTC
NOTE: If DTC P0652 or P0653 is present with this DTC, diagnose DTCs P0652 or P0653 before diagnosing
this DTC.
NOTE: The Timing Belt/Chain must be correctly installed and operational before diagnosis can be made.
Refer to the Service Information to ensure the timing belt is properly installed.
NOTE: If the ECM detects and stores a DTC, the ECM also stores the engine/vehicle operating conditions
under which the DTC was set. Some of these conditions are displayed on the scan tool at the same time the
DTC is displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may
assist when checking for an active DTC.
Turn the ignition on.
With the scan tool, erase the ECM DTCs.
Attempt to start the engine cranking the engine for at least 7 seconds.
With the scan tool, read the ECM DTCs.
Does the scan tool display this DTC?
Yes
>> Go To 3
No
>> Go To 2
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1347
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