Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK IF RELATED ENGINE TPS DTCS ARE PRESENT
1. With the scan tool, check Engine DTCs, including pending DTCs and one trip failures.
  Are there any Engine TPS DTCs present?
  
  Yes
  - Perform the appropriate diagnostic procedure.
  No
  - Go to step 2
CHECK IF THE DTC IS CURRENT
1. With the scan tool, record the Event Data to help identify the conditions in which the DTC was set.
2. With the scan tool, erase Transmission DTCs.
  NOTE: Clearing DTCs does NOT erase the Event Data. To erase the Event Data you must either perform a Quick Learn procedure or battery disconnect (if available) with the scan tool, or manually disconnect the battery. Whatever method used might reset certain learned transmission values to controller defaults and may cause poor shift quality until those values are relearned.
3. Drive the vehicle and try to duplicate the conditions in which the DTC was reported by the Event Data.
4. With the scan tool, read Transmission DTCs.
  Does this DTC reset?
  
  Yes
  - Go to step 3
  No
  - Go to step 4
CHECK THE THROTTLE POSITION SENSOR OPERATION
1. Ignition on, engine not running.
2. With the scan tool, under Transmission Sensors, monitor the TPS voltage in the following step.
3. Slowly open and close the throttle while checking for erratic voltage changes.
  Did the TPS voltage change smooth and consistent?
  
  Yes
  - Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for Service Information Tune-ups or Service Bulletins for any possible causes that may apply. If no problems are found, replace and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn.
  - Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Replace the Throttle Position Sensor in accordance with the Service Information.
  - Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle the wires while checking for shorted and open circuits.
4. Pay particular attention to the TPS signal and sensor ground circuits.
5. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Test Complete.