Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
The EGR Valve harness connector is difficult to lock on to the valve. A connector not locked on completely will cause this DTC to set.

NOTE:
If there are any 5-Volt supply DTCs present, repair those DTCs before proceeding.
1. Turn the ignition on.
2. With the scan tool, record all Freeze frame data.
3. With the scan tool, erase DTCs.
4. Turn the ignition off for 75 seconds.
5. Start the vehicle. It may be necessary to drive vehicle to reset DTC.
6. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE (F857) 5-VOLT SUPPLY FOR AN OPEN/HIGH RESISTANCE

Fig 1: EGR Valve Assembly Connector Pin ID
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the EGR Valve harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Turn the ignition on, engine not running.
4. Measure the voltage of the (F857) 5-Volt Supply circuit at the EGR Valve harness connector.
  Is the voltage reading 5.0 Volts?
  
  Yes
  - Go To 3.
  No
  - Repair the (F857) 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE EGR POSITION SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE

Fig 2: EGR Valve Assembly Connector Pin ID
Courtesy of CHRYSLER LLC
1. Measure the voltage of the (K683) EGR Position Sensor Signal 1 circuit at the EGR Valve harness connector.
2. Measure the voltage of the (K685) EGR Position Sensor Signal 2 circuit at the EGR Valve harness connector.
3. Measure the voltage of the (K687) EGR Position Sensor Signal 3 circuit at the EGR Valve harness connector.
  Is the voltage above 2.0 Volts?
  
  Yes
  - Repair the short to voltage in the appropriate circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4.
CHECK THE (K916) SENSOR GROUND FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance of the (K916) Sensor Ground circuit between the EGR Valve harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K916) Sensor Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE EGR POSITION SIGNAL CIRCUITS FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K683) EGR Position Sensor Signal 1 circuit between the EGR Valve harness connector and the PCM harness connector.
2. Measure the resistance of the (K685) EGR Position Sensor Signal 2 circuit between the EGR Valve harness connector and the PCM harness connector.
3. Measure the resistance of the (K687) EGR Position Sensor Signal 3 circuit between the EGR Valve harness connector and the PCM harness connector.
  Is the resistance less than 5.0 Ohms?
  
  Yes
  - Go To 6.
  No
  - Repair the open or high resistance in the appropriate circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE EGR POSITION SIGNAL CIRCUITS FOR A SHORT TO GROUND

Fig 3: EGR Valve Assembly Connector Pin ID
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (K683) EGR Position Sensor Signal 1 circuit at the PCM harness connector.
2. Measure the resistance between ground and the (K685) EGR Position Sensor Signal 2 circuit at the PCM harness connector.
3. Measure the resistance between ground and the (K687) EGR Position Sensor Signal 3 circuit at the PCM harness connector.
  Is the resistance less than 10k Ohms?
  
  Yes
  - Repair the short to ground in the appropriate circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 7.
CHECK THE EGR VALVE
1. Reconnect the PCM C1 harness connector.
2. Replace the EGR Valve.
3. With the scan tool, erase DTCs.
4. Turn the ignition off for 75 seconds.
5. Start the vehicle. It may be necessary to drive vehicle to reset DTC.
6. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .