Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
NOTE:
Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test.
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE (K854) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Accelerator Pedal Position Sensor harness connector.
3. Disconnect the PCM C1 harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (K854) 5-Volt Supply circuit at the Accelerator Pedal Position Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (K854) 5-Volt Supply circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (K29) APP SIGNAL 2 CIRCUIT FOR A SHORT TO VOLTAGE
1. Measure the voltage between ground and the (K29) APP Signal 2 circuit at the Accelerator Pedal Position Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (K29) APP Signal 2 circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK FOR THE (K29) APP SIGNAL 2 CIRCUIT SHORTED TO THE (K854) 5-VOLT SUPPLY CIRCUIT
1. Check for continuity between the (K29) APP Signal 2 circuit and the (K854) 5-Volt Supply circuit at the Accelerator Pedal Position Sensor harness connector.
  Is there continuity between the (K29) APP Signal 2 circuit and the (K854) 5-Volt Supply circuit?
  
  Yes
  - Repair the (K29) APP Signal 2 circuit for a short to the (K854) 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
CHECK FOR THE (K29) APP SIGNAL 2 CIRCUIT SHORTED TO THE (K852) 5-VOLT SUPPLY CIRCUIT
1. Check for continuity between the (K29) APP Signal 2 circuit and the (K852) 5-Volt Supply circuit at the Accelerator Pedal Position Sensor harness connector.
  Is there continuity between the (K29) APP Signal 2 circuit and the (K852) 5-Volt Supply circuit?
  
  Yes
  - Repair the (K29) APP Signal 2 circuit for a short to the (K852) 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 6
CHECK THE (K29) APP SIGNAL 2 CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
  CAUTION:
  Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.
2. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
3. Measure the resistance of the (K29) APP Signal 2 circuit between the Accelerator Pedal Position Sensor harness connector and the GPEC Adaptor.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 7
  No
  - Repair the (K29) APP Signal 2 circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (K400) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K400) Sensor Ground circuit between the Accelerator Pedal Position Sensor harness connector and the GPEC Adaptor.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 8
  No
  - Repair the (K400) Sensor Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
ACCELERATOR PEDAL POSITION SENSOR
1. Turn the ignition off.
2. Connect the PCM C1 harness connector.
3. Connect a jumper wire between the (K400) Sensor Ground circuit and the (K29) APP Signal 2 circuit in the Accelerator Pedal Position Sensor harness connector.
4. Turn the ignition on.
5. With the scan tool, read the Accelerator Pedal Position Sensor signal voltage.
  Is the voltage below 0.1 volts with the jumper wire in place?
  
  Yes
  - Replace the Accelerator Pedal Position Sensor in accordance with the Service Information. Refer to PEDAL, ACCELERATOR, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 9
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.
4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
5. Look for the data to change or for the DTC to reset during the wiggle test.
6. Perform any Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .