Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. 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 75 seconds.
5. Turn the ignition on.
6. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK THE (K186) EXHAUST GAS TEMPERATURE 1/3 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

Fig 1: Exhaust Gas Temperature Sensor 1/3 Connector Pin ID
Courtesy of CHRYSLER GROUP, LLC
1. Ignition on.
2. Disconnect the Exhaust Temperature Sensor 1/3 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Measure the voltage on the (K186) Exhaust Gas Temperature Sensor 1/3 Signal circuit at the Exhaust Temperature Sensor 1/3 harness connector.
  Is the voltage reading above 5.1 volts?
  
  Yes
  - Repair the (K186) Exhaust Gas Temperature Sensor 1/3 Signal circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (K186) EXHAUST GAS TEMPERATURE 1/3 SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
2. Turn the ignition off.
3. Disconnect the PCM C2 harness connector.
4. Measure the resistance of the (K186) Exhaust Gas Temperature Sensor 1/3 Signal circuit between the Exhaust Gas Temperature Sensor 1/3 harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K186) Exhaust Temperature 1/3 Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
CHECK THE (K900) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE
2. Measure the resistance of the (K900) Sensor ground circuit between the Exhaust Gas Temperature Sensor 1/3 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 STANDARD PROCEDURE .
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 1/3 harness connector for at least five seconds.
  Does the DTC P242C become active?
  
  Yes
  - Replace the Exhaust Gas Temperature Sensor 1/3 in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Replace the Powertrain Control Module (PCM) in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .