Conditions for Running the DTC
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
P1684 - Fail Case 1 and 2
- No TFT DTCs P0711, P0712, or P0713.
- No ISS DTCs P0716 or P0717.
- No OSS DTCs P0722 or P0723.
- DTC P1684 has not passed this key ON.
- The engine speed is 500 RPM or greater for 5 seconds.
- The ignition voltage is between 8.6 volts and 19.0 volts.
- The TCM power up temperature is between -39 and +149°C (-38 and +300°F).
P1684 - Fail Case 3
- The engine speed is 500 RPM or greater for 5 seconds.
- The ignition voltage is between 8.6 volts and 19.0 volts.
P1685
- No ISS DTCs P0716 or P0717.
- No OSS DTCs P0722 or P0723.
- The transmission output shaft speed is 200 RPM or greater for 200 seconds or more.
- The torque converter clutch (TCC) slip speed is 120 RPM or greater for 200 seconds or more.
- DTC P1686 has not failed this ignition cycle.
- The engine speed is 500 RPM or greater for 5 seconds.
- The ignition voltage is between 8.6 volts and 19.0 volts.
P1686
- The engine speed is 500 RPM or greater for 5 seconds.
- The ignition voltage is between 8.6 volts and 19.0 volts.
- DTC P1686 has not failed this ignition cycle.