[HWYSTR455]

You should probably call support...

TCC Lockup / Forced TCC Lockup
The TCU locks up the torque converter clutch during cruising conditions for improved fuel economy
and to allow the transmission fluid to cool. In order for the TCC to lock, several conditions must be
met:
- Transmission fluid warmed up
- Transmission above 3rd gear (unless transmission fluid is overheated)
- Vehicle speed above user adjustable minimum (see MIN TCC LOCK setting)
- Throttle above idle position
- Throttle below user adjustable maximum (see MAX TCC TPS setting)
NOTE: TCC lockup can be completely disabled if desired by entering an unobtainable speed for the
MIN TCC LOCK setting. The vehicle would then always be below the minimum speed for TCC
lockup.
There is also a Forced TCC Lockup mode. When the TCC APPLY wire is grounded, the TCC will
lock without the normal requirements being met. The only conditions that must be met are in place to
prevent stalling if this feature is accidentally turned on or left on:
- Transmission above 1st gear
- Vehicle speed above 10 mph


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