Circuit/System Verification

Ignition ON.
Verify the scan tool Engine Coolant Temperature parameter was less than 125°C (257°F) when DTC set by reviewing the scan tool Freeze Frame/Failure Records.
- If 125°C (257°F) or greater
  Refer to Engine Overheating .
- If less than 125°C (257°F)
Verify the scan tool TCM Temperature parameter is less than 146°C (295°F).
- If 146°C (295°F) or greater
  Replace the Q8 Control Solenoid Valve assembly.
- If less than 146°C (295°F)
Verify the transmission fluid level and condition is correct. Refer to Transmission Fluid Level and Condition Check .
- If the transmission fluid level and condition is not correct
  Repair as necessary.
- If the transmission fluid level and condition is correct
Clear the TCM DTCs with a scan tool.
Operate the vehicle until normal engine temperature is reached.
Verify the scan tool Transmission Fluid Temperature parameter is less than 140°C (284°F).
- If 140°C (284°F) or greater
1. Ignition OFF.
2. Verify the conditions listed below do not exist:
  - Obstructions to the airflow to the radiator or transmission
  - Radiator damage
  - Transmission cooler damage
  - Transmission cooler pipe kinked or damaged
    - If a condition exists, repair or replace as necessary.
    - If none of the conditions exist, refer to Transmission Fluid Cooler Flow Test and Flushing .
- If less than 140°C (284°F)
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
  Replace the Q8 Control Solenoid Valve Assembly.
- If the DTC does not set
All OK.