Chrysler Concorde 2004 Service Manual page 831

Symptom:
P0406 - EGR POSITION SENSOR HIGH
When Monitored and Set Condition:
P0406 - EGR POSITION SENSOR HIGH
When Monitored: With the ignition on. Battery voltage greater than 10 volts.
Set Condition: EGR position sensor signal is greater than 4.89. One trip Fault.
EGR POSITION SENSOR SWEEP
INTERMITTENT CONDITION
EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
EGR POSITION SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
EGR SOLENOID ASSEMBLY INTERNAL FAILURE
EGR POSITION SENSOR SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
PCM
TEST
1 Start the engine.
With the DRBIII , read the EGR Position Sensor voltage.
Is the voltage above 4.5 volts?
Yes → Go To 2
→ Go To 8
No
2 Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the EGR Position Sensor Signal circuit and the 5
Volt Supply circuit in the EGR Solenoid harness connector.
Is the resistance below 100 ohms?
Yes → Repair the EGR Position Sensor Signal circuit for a short to the 5
→ Go To 3
No
POSSIBLE CAUSES
ACTION
Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - NGC
173
APPLICABILITY
All
All