Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

OTHER DTCS
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.
  Are there any Generator voltage errors or low voltage errors for the Mass Airflow Sensor or EGR Airflow Controller?
  
  Yes
  - Repair the Generator error or Smart Power Relay power supply.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 2.
P113C ACTIVE
Is DTC P113C Active?

Yes
- Go To 3.
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE POWER SUPPLY TO SMART O2 MODULE FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Smart O2 Sensor Module harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Ignition on, engine not running.
4. Measure the voltage of the Smart O2 Sensor Module power supply circuit at the Smart O2 Sensor Module harness connector.
  Is the voltage above 9.5 Volts and below 16.5 Volts?
  
  Yes
  - Go To 4.
  No
  - Repair the Smart Power Relay power supply for an open or short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE GROUND CIRCUIT TO SMART O2 MODULE FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Measure the resistance between ground and the Smart O2 Sensor Module ground circuit at the Smart O2 Sensor Module harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the Smart O2 Sensor Module ground circuit for an open.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
SMART O2 SENSOR MODULE
1. Reconnect the Smart O2 Sensor Module harness connector.
2. Ignition on, engine not running.
3. With the scan tool, read DTCs.
  Is DTC P113C Active?
  
  Yes
  - Replace the Smart O2 Sensor Module.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Test Complete. The removal and installation of the connector corrected the problem. Check the connector for spread or damaged terminals.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .