Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK THE (K384) EXHAUST GAS TEMPERATURE SENSOR 1 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

Fig 1: Checking Exhaust Gas Temperature Sensor 1/1 Signal Circuit For A Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Exhaust Gas Temperature Sensor 1/1 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (K384) Exhaust Gas Temperature Sensor 1 Signal circuit at the Exhaust Gas Temperature Sensor 1/1 harness connector.
  Does the voltage measure above 5.2 Volts?
  
  Yes
  - Repair the (K384) Exhaust Gas Temperature Sensor 1 Signal circuit for a short to voltage.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (K384) EXHAUST GAS TEMPERATURE SENSOR 1 SIGNAL FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance of the (K384) Exhaust Gas Temperature Sensor 1 Signal circuit between the Exhaust Gas Temperature Sensor 1/1 harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K384) Exhaust Gas Temperature Sensor 1 Signal circuit for an open or high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (K385) SENSOR RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K385) Sensor Return circuit between the Exhaust Gas Temperature Sensor 1/1 harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (K385) Sensor Return circuit for an open or high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
EXHAUST GAS TEMPERATURE SENSOR 1/1
1. Turn the ignition off.
2. Reconnect the PCM C1 harness connector.
3. Connect a jumper wire between the (K384) Exhaust Gas Temperature Sensor 1 Signal circuit and the (K385) Sensor Return circuit at the Exhaust Gas Temperature Sensor 1/1 harness connector.
4. Turn the ignition on.
5. With the scan tool, select View DTCs.
  NOTE:
  The scan tool should display an Exhaust Gas Temperature Sensor 1/1 Low DTC as active with the jumper wire in place.
  
  Does the scan tool display the DTC as described above?
  
  Yes
  - Replace the Exhaust Gas Temperature Sensor 1/1.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 6
POWERTRAIN CONTROL MODULE
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Exhaust Gas Temperature Sensor 1/1 and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Replace the Powertrain Control Module (PCM) in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .