Diagnostic Test

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
When this DTC is Active the engine speed, torque and vehicle speed are limited to a Limp in mode.
1. Start the engine and allow it to reach normal operating temperature.
  WARNING:
  When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in possible serious or fatal injury.
  
  NOTE:
  Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test.
  
  NOTE:
  If you are viewing data recorder information or Freeze Frame data the APP Sensor No. 2 is pulled low by the PCM as part of its system testing. This test happens every 320 milliseconds and may not show up on the scan tool but may show up on a data recorder or lab scope. It is acceptable to see the voltage close to zero with a normal sensor when using a data recorder/lab scope.
2. With the scan tool, select View DTCs.
  Is the DTC Active at this time?
  
  Yes
  - Go To 2
  No
  - Go To 8
(K29) APP SENSOR NO. 2 SIGNAL CIRCUIT SHORTED TO VOLTAGE

Fig 1: Checking APP Sensor No. 2 Signal Circuit For A Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Disconnect the APP Sensor harness connector.
4. Ignition on, engine not running.
5. Measure the voltage on the (K29) APP Sensor No. 2 Signal circuit in the APP Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (K29) APP Sensor No. 2 Signal circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
(K29) APPS NO. 2 SIGNAL CIRCUIT SHORTED TO THE (K854) 5-VOLT SUPPLY CIRCUIT

Fig 2: Checking APPS No. 2 Signal Circuit For A Short To 5-Volt Supply Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance between the (K29) APP Sensor No. 2 Signal circuit and the (K854) 5-Volt Supply circuit in the APP Sensor harness connector.
  Is the resistance below 100 Ohms?
  
  Yes
  - Repair the short between the (K29) APP Sensor No. 2 Signal circuit and the (K854) 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
(K29) APPS NO. 2 SIGNAL CIRCUIT SHORTED TO THE (K852) 5-VOLT SUPPLY CIRCUIT

Fig 3: Checking APPS No. 2 Signal Circuit For Short To 5-Volt Supply Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between the (K29) APP Sensor No. 2 Signal circuit and the (K852) 5-Volt Supply circuit in the APP Sensor harness connector.
  Is the resistance below 100 Ohms?
  
  Yes
  - Repair the short between the (K29) APP Sensor No. 2 Signal circuit and the (K852) 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
(K400) APP SENSOR NO. 2 RETURN CIRCUIT OPEN

Fig 4: Checking For An Open Or Excessive Resistance In APP Sensor No. 2 Ground Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (K400) APP Sensor No. 2 Return circuit from the APP Sensor harness connector to the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 6
  No
  - Repair the open in the (K400) APP Sensor No. 2 Return circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect the PCM C1 harness connector.
2. Ignition on, engine not running.
3. With the scan tool, monitor the APP Sensor 2 voltage.
  Is the voltage above 0 Volts?
  
  Yes
  - Go To 7
  No
  - Verify that there is good pin to terminal contact in the APP Sensor and Powertrain Control Module connectors. If OK, replace the APP Sensor Assembly in accordance with the Service Information. Refer to PEDAL, ACCELERATOR, REMOVAL . After installation is complete, use a scan tool and select the ETC RELEARN function to relearn the APPS values.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Accelerator Pedal Position Sensor 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. Verify that there is good pin to terminal contact in the APP Sensor and Powertrain Control Module connectors.
4. Perform any Technical Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
APP SENSOR NO. 2 SWEEP
1. Ignition on, engine not running.
2. With the scan tool, monitor the APP Sensor 2 voltage.
3. Slowly press the Accelerator Pedal down.
  Does voltage start at approximately 0.22 Volt and go above 2.31 Volts with a smooth transition?
  
  Yes
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
  No
  - Verify that there is good pin to terminal contact in the APP Sensor and Powertrain Control Module connectors. If OK, replace the APP Sensor Assembly in accordance with the Service Information. Refer to PEDAL, ACCELERATOR, REMOVAL . After installation is complete, use a scan tool and select the ETC RELEARN function to relearn the APPS values.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .