Conditions for Setting the DTC: P1684

Fail Case 1

• Vehicle speed is greater than 8 km/h (5 mph) for 300 seconds cumulative.
• TCC slip speed is greater than 120 RPM for 300 seconds cumulative.
• The TCM power up temperature is between -40 and +21°C (-40 and +70°F).
• The TCM power up temperature has changed by less than 2°C (3.6°F) in 100 seconds.
• The transmission fluid temperature (TFT) is greater than 70°C (158°F).
• The TFT has increased by 55°C (99°F) since startup.

Fail Case 2

• Vehicle speed is greater than 8 km/h (5 mph) for 300 seconds cumulative.
• TCC slip speed is greater than 120 RPM for 300 seconds cumulative.
• The TCM temperature sensor is between 120-150°C (248-302°F).
• The TCM power up temperature has changed by less than 2°C (3.6°F) in 100 seconds.
• The TFT is greater than 70°C (158°F).
• The TFT has increased by 55°C (99°F) since startup.

Fail Case 3

The TCM power up temperature changes by greater than or equal to 20°C (36°F) 14 times over 7 seconds.