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 PRESENT
1. Using the scan tool, check for any additional APP Sensor fault codes.
  Do you have any additional APP Sensor faults?
  
  Yes
  - Troubleshoot other DTCs first,
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
APP SENSOR HARNESS
1. Verify that the APP Sensor harness connector is connected.
2. Inspect the harness and the APP Sensor harness connector.
  Are any pins damaged?
  
  Yes
  - Repair or replace the harness.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
CHECK THE APP SENSOR
1. Monitor the APPS 1 and APPS 2 voltage with the scan tool while depressing the accelerator pedal.
  Is the voltage transition shown on the scan tool smooth while depressing the accelerator pedal and is the voltage from APPS 1 twice as much +/- 3% as the voltage from APPS 2?
  
  Yes
  - Go To 4.
  No
  - Replace the APP Sensor.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K23) APP SENSOR 1 SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Disconnect the C2 PCM harness connector.
2. Disconnect the APP Sensor harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Measure the resistance of the (K23) APPS 1 Signal circuit between the APP Sensor harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K23) APPS 1 Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (F855) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (F855) 5-Volt Supply circuit between the APP Sensor connector and the PCM C2 connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 6.
  No
  - Repair the (F855) 5-Volt Supply circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K23) APP SENSOR 1 SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 1: Measuring Resistance Between Ground And (K23) APP Sensor No. 1 Signal Circuit In APP Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the APP Sensor 1 Signal circuit at the APP Sensor harness connector.
  Is the resistance above 10K Ohms?
  
  Yes
  - Go To 7.
  No
  - Repair the (K23) APP Sensor 1 Signal circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR THE (K23) APP SENSOR 1 SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT
1. Measure the resistance between the (K23) APP Sensor 1 Signal circuit and all other circuits in the PCM C2 connector.
  Is the resistance below 10K Ohms between the (K23) APPS 1 Signal circuit and any other circuit?
  
  Yes
  - Repair the short between the (K23) APP Sensor Signal circuit and the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 8.
CHECK THE (F855) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND

Fig 2: Measuring Resistance Between Ground And (F855) 5-volt Supply Circuit In APP Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance between the ground and the (F855) 5-Volt Supply circuit at the APP Sensor harness connector.
  Is the resistance above 10k Ohms?
  
  Yes
  - Repair the (F855) 5-Volt Supply circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 9.
CHECK FOR THE (F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO ANOTHER CIRCUIT
1. Measure the resistance between the (F855) 5-Volt Supply circuit and all other circuits in PCM C2 harness connector.
  Is the resistance below 10K Ohms between the (F855) 5-Volt Supply circuit and any other circuit?
  
  Yes
  - Repair the short between the (F855) 5-Volt Supply circuit and the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 10.
CHECK THE (K167) APP SENSOR 1 RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K167) APP Sensor 1 Return circuit between the APP Sensor connector and the PCM C2 connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 11.
  No
  - Repair the (K167) APP Sensor Return circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR THE (K23) APP SENSOR 1 SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT

Fig 3: Measuring Resistance Between (K23) APP Sensor No. 1 Signal Circuit And (F855) 5-volt Supply Circuit In APP Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (K23) APP Sensor 1 Signal circuit and the (F855) 5-Volt Supply circuit at the APP Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K23) APP Sensor Signal circuit and the (F855) 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 12.
CHECK FOR THE (K167) APP SENSOR 1 RETURN CIRCUIT SHORTED TO ANOTHER CIRCUIT
1. Measure the resistance between the (K167) APP Sensor 1 Return circuit at and all other circuits in the PCM C2 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K167) APP Sensor 1 Return circuit and the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 13.
CHECK THE (K29) APP SENSOR 2 SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K29) APP Sensor 2 Signal circuit between the APP Sensor harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 14.
  No
  - Repair the (K29) APP Sensor 2 Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (F856) 5-Volt Supply circuit between the APP Sensor harness connector and the PCM C2 connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 15.
  No
  - Repair the (F856) 5-Volt Supply circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K29) APP SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 4: Measuring Resistance Between Ground And (K29) APP Sensor No. 2 Signal Circuit In APP Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (K29) APP Sensor 2 Signal circuit at the APP Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (K29) APP Sensor 2 Signal circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 16.
CHECK FOR THE (K29) APP SENSOR 2 SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT
1. Measure the resistance between the (K29) APP Sensor 2 Signal circuit and all other circuits in the PCM C2 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K29) APP Sensor 2 Signal circuit and the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 17.
CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND

Fig 5: Measuring Resistance Between Ground And (F856) 5-volt Supply Circuit In APP Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (F856) 5-Volt Supply circuit at the APP Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (F856) 5-Volt Supply circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 18.
CHECK FOR THE (F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO ANOTHER CIRCUIT
1. Measure the resistance between the (F856) 5-Volt Supply circuit and all other circuits in the PCM C2 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (F856) 5-Volt Supply circuit and the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 19.
CHECK THE (K400) APP SENSOR 2 RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K400) APP Sensor 2 Return circuit between the APP Sensor harness connector and the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 20.
  No
  - Repair the (K400) APP Sensor 2 Return circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR THE (K29) APP SENSOR 2 SIGNAL CIRCUIT SHORTED TO THE (F856) 5-VOLT SUPPLY CIRCUIT

Fig 6: Measuring Resistance Between (K29) APP Sensor No. 2 Signal Circuit And (F856) 5-volt Supply Circuit In APP Sensor Harness Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (K29) APP Sensor 2 Signal circuit and the (F856) 5-Volt Supply circuit in the APP Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K29) APP Sensor 2 Signal circuit and the (F856) 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 21.
CHECK FOR THE (K400) APP SENSOR 2 RETURN CIRCUIT SHORTED TO ANOTHER CIRCUIT
1. Measure the resistance between the (K400) APP Sensor 2 Return circuit and all other circuits in the PCM C2 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K400) APP Sensor 2 Return circuit and the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 22.
POWERTRAIN CONTROL MODULE
1. Reconnect the PCM connectors.
2. Reconnect the APP Sensor connector.
3. Turn Ignition on, engine off.
4. While monitoring with the scan tool, disconnect the APP Sensor harness connector.
  Did a APP Sensor 1 and APP Sensor 2 voltage low DTC set?
  
  Yes
  - Go To 23.
  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 .
APP SENSOR
1. Reconnect the APP Sensor harness connector.
2. Monitor the APP Sensor 1 and APP Sensor 2 voltage with the scan tool while depressing the accelerator pedal.
  Is the voltage transition shown on the scan tool smooth while depressing the accelerator and is the voltage from APP Sensor 1 twice as much +/- 3% as the voltage from APP Sensor 2?
  
  Yes
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
  No
  - Replace the APP Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .