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.

OTHER DTCS
1. With the scan tool, read DTCs.
  Are any DTCs present for Inlet Air Pressure Sensor or Boost Pressure Sensor?
  
  Yes
  - Troubleshoot other DTCs first.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 2.
INTERMITTENT CONDITION
1. Start the engine.
2. Using the accelerator pedal, accelerate the engine speed to high idle and hold the engine speed at high idle for at least 20 seconds.
  Does DTC P0049 become active?
  
  Yes
  - Go To 3.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
TURBOCHARGER SPEED SENSOR

Fig 1: Turbocharger Speed Sensor Connector Pin ID
Courtesy of CHRYSLER LLC
1. Turn Ignition off.
2. Disconnect the Turbocharger Speed Sensor connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Measure the resistance across the (K540) Turbocharger Speed Sensor Signal circuit and the (K541) Turbocharger Speed Sensor Return circuit at the Turbocharger Speed Sensor.
  Is the resistance between 600 and 1600 Ohms?
  
  Yes
  - Go To 4.
  No
  - Replace the Turbocharger Speed Sensor.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K540) TURBO SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 2: Turbocharger Speed Sensor Connector Pin ID
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (K540) Turbocharger Speed Sensor Signal circuit at the Turbocharger Speed Sensor connector.
  Is the resistance greater than 10k Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K540) Turbocharger Speed Sensor Signal circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K540) TURBO SPEED SENSOR SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 3: Checking Turbo Speed Sensor Signal Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC
1. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
2. Measure the resistance of the (K540) Turbocharger Speed Sensor Signal circuit between the Turbocharger Speed Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 6.
  No
  - Repair the (K540) Turbocharger Speed Sensor Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K541) TURBO SPEED SENSOR RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 4: Checking Turbo Speed Sensor Return Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K541) Turbocharger Speed Sensor Return circuit between the Turbocharger Speed Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 7.
  No
  - Repair the (K541) Turbocharger Speed Sensor Return circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
POWERTRAIN CONTROL MODULE
1. Reconnect PCM C1 harness connector.
2. Reconnect the Turbocharger Speed Sensor connector.
3. Turn the ignition on.
4. With the scan tool, clear DTCs.
5. Test drive the vehicle.
  Does DTC P0049 become active?
  
  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 .