Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1342
3.
(K312) EGR AIRFLOW CONTROL VALVE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
NOTE: The jumper wire should still be in place.
Measure the voltage of the (K312) EGR Airflow Control Valve Position
Sensor Signal circuit in the EGR Airflow Control Valve connector.
Is there any voltage present?
Yes
>> Repair the (K312) EGR Airflow Control Valve Position Sen-
sor Signal circuit for a short to voltage.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 4
4.
(K390) EGR AIRFLOW CONTROL VALVE RETURN CIRCUIT SHORTED TO VOLTAGE
NOTE: The jumper wire should still be in place.
Measure the voltage of the (K390) EGR Airflow Control Valve Return
circuit in the EGR Airflow Control Valve connector.
Is there any voltage present?
Yes
>> Repair the (K390) EGR Airflow Control Valve Return circuit
for a short to voltage.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 5
5.
EGR AIRFLOW CONTROL VALVE
Turn the ignition off.
Remove the jumper wire and install the ASD Relay.
Connect the Engine Control Module (ECM) connector.
Connect a jumper wire between the (K390) EGR Airflow Control Valve Return circuit and the (K312) EGR Airflow
Control Valve Position Sensor Signal circuit in the EGR Airflow Control Valve connector.
Turn the ignition on.
With the scan tool, Clear DTCs.
With the scan tool, select View DTCs.
NOTE: The scan tool should display an EGR Airflow Throttle Position Sensor low voltage or short to ground
DTC with the jumper wire in place.
Does the scan tool display the Sensor DTC(s) as described above?
Yes
>> Replace the EGR Airflow Control Valve in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 6
9 - 1392
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
6.
(K312) EGR AIRFLOW CONTROL VALVE POSITION SENSOR SIGNAL OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Engine Control Module (ECM) connector.
Measure the resistance of the (K312) EGR Airflow Control Valve Posi-
tion Sensor Signal between the EGR Airflow Control Valve connector
and the Engine Control Module (ECM) connector.
Is the resistance below 10.0 ohms?
Yes
>> Go to 7
No
>> Repair the (K312) EGR Airflow Control Valve Position Sen-
sor Signal for an open circuit or high resistance.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
7.
(K390) EGR AIRFLOW CONTROL VALVE RETURN CIRCUIT OPEN OR HIGH RESISTANCE
Measure the resistance of the (K390) EGR Airflow Control Valve Return
circuit between the EGR Airflow Control Valve connector and the Engine
Control Module (ECM) connector.
Is the resistance below 10.0 ohms?
Yes
>> Go to 8
No
>> Repair the (K390) EGR Airflow Control Valve Return circuit
for an open circuit or high resistance.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1393
8.
ENGINE CONTROL MODULE (ECM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EGR Airflow Control
Valve and the Engine Control Module (ECM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes
>> Repair as necessary.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Replace the Engine Control Module (ECM) in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
9 - 1394
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
P0460-FUEL LEVEL SENSOR 1 CIRCUIT
For a complete wiring diagram Refer to Section 8W
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1395
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