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
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 30 seconds.
5. Turn the ignition on.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE (K384) EXHAUST GAS TEMPERATURE 1/4 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Ignition on.
2. Disconnect the Exhaust Temperature Sensor 1/4 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Measure the voltage on the (K384) Exhaust Gas Temperature Sensor 1/4 Signal circuit at the Exhaust Temperature Sensor 1/4 harness connector.
  Is the voltage reading above 5.2 Volts?
  
  Yes
  - Repair the short to voltage in the (K384) Exhaust Gas Temperature Sensor 1/4 Signal circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
CHECK THE (K384) EXHAUST GAS TEMPERATURE 1/4 SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 1: Checking Exhaust Gas Temperature 1/4 Signal Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Measure the resistance of the (K384) Exhaust Gas Temperature Sensor 1/4 Signal circuit between the Exhaust Gas Temperature Sensor 1/4 harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the (K384) Exhaust Temperature 1/4 Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K900) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 2: Checking Exhaust Gas Temperature Sensor Ground Circuit For Open/High Resistance
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K900) Sensor ground circuit between the Exhaust Gas Temperature Sensor 1/4 harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K900) 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 EXHAUST GAS TEMPERATURE SENSOR
1. Turn the ignition on.
2. While monitoring the scan tool, connect a jumper across the Exhaust Gas Temperature Sensor 1/4 connector for at least five seconds.
  Does the DTC P2470 become active?
  
  Yes
  - Replace the Exhaust Gas Temperature Sensor 1/4 in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - 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 .