Conditions for Setting the DTC: Notes
WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
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.