Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

VISUALLY INSPECT THE ACCELERATOR PEDAL
1. Check the Accelerator Pedal for free movement throughout entire range. There should be no roughness or sticking.
  Were any issues found with the Accelerator Pedal?
  
  Yes
  - Replace the Accelerator Pedal Assembly or perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 2.4L .
  No
  - Go To 2
DTC INFORMATION
NOTE:
If a pedal assembly becomes mechanically stuck the voltage output will stay fixed, if this is also followed by a long application of the brakes this code will set.

NOTE:
When this code sets the pedal position in the PCM software will ramp to idle. If the Pedal voltage changes OR the brake pedal is released, the pedal position in the PCM software will ramp up to the pedal position and the ETC light will go out.
1. With the scan tool, read DTCs and record the related Freeze Frame data.
2. Diagnose all other Brake Switch and APP Sensor codes before continuing.
  NOTE:
  The most likely cause of this DTC is a driver who uses both feet while driving, one for the Accelerator Pedal and the other for the Brake Pedal.
3. Ask the driver of the vehicle if these conditions apply to their driving habits.
  Are the listed conditions part of the customers driving habits?
  
  Yes
  - Advise the customer of what caused the DTC. This is normal operation of an ETC equipped vehicle because of safety issues.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 2.4L .
  No
  - Go To 3
CHECK THE BRAKE SWITCH OPERATION
1. With the scan tool, monitor the status of brake switch 1.
2. Press and release the brake pedal.
  NOTE:
  The status for each switch should change from Not Pressed to Pressed when the brake switch is pressed.
  
  Does the status change as described above?
  
  Yes
  - Go To 4
  No
  - Check the Brake Switch for proper adjustment and installation. Check all related circuits for an open or shorted condition using the appropriate wiring diagram. If no other problems are found, replace the Brake Switch in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 2.4L .
CHECK THE APP SENSOR SIGNALS USING A GRAPH
1. Turn the ignition off.
2. Reconnect the APP Sensor harness connector.
3. Reconnect the PCM C1 harness connector.
4. Turn the ignition on, engine not running.
5. With the scan tool, set both APP Sensors to a graph.
6. Slowly press and release the Accelerator Pedal while monitoring the graph of the sensors on the scan tool.
  NOTE:
  When operating properly, the voltage reading of the APP 2 will always be approximately half of the voltage reading of the APP 1.
  
  Does the scope pattern show the APP 1 and APP2 signals move up and down proportionately along with the pedal movement?
  
  Yes
  - Go To 5
  No
  - 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, 2.4L .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all PCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Check for spread terminals and verify proper terminal tension.
  Repair any conditions that are found.
5. Connect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
10. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL, 2.4L/3.2L .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 2.4L .
  No
  - The wiring or poor connection problem has been repaired.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 2.4L .