The following Torque Pro equation can be used to indicate the gear and torque-converter lockup status. The speed/rev ratio ranges are based on the gear and differential ratios for the 2.8l 6 speed transmission, with a tolerance of between +-3 and +-5% to allow for minor levels of slippage at lock-up. This works really well for 4th, 5th and 6th gear and not as good for 1st and 2nd gear as there is larger variation in revs as a percentage during lock-up for the lower gears. This could be improved by increasing the range but the indicator is really most useful when targeting lock-up in the higher gears when cruising or towing than when accelerating up through the lower gears.
Lookup([0d]/[0c]*100:='Coast':0.0~0.2='P/N':0.2~0.99='D1u':0.99~1.09='D1':1.09~1.70='D2u':1 .70~1.88='D2':1.88~2.39='D3u':2.39~2.64='D3':2.64~ 3.60='D4u':3.60~3.90='D4':3.90~5.29='D5u':5.29~5.6 2='D5':5.62~6.27='D6u' :6.27~6.65='D6')
The equation can be adapted for low range by editing "*100" to "*256.6" to account for the low range gearbox ratio. I have not tested this yet but think it may not work as well for the same reason that the lower gears require a larger tolerance to work.
If anyone knows of a less cumbersome way of indicating the gear and lock-up status directly from the Toyota OBD PIDs I would be happy to be advised.
Lookup([0d]/[0c]*100:='Coast':0.0~0.2='P/N':0.2~0.99='D1u':0.99~1.09='D1':1.09~1.70='D2u':1 .70~1.88='D2':1.88~2.39='D3u':2.39~2.64='D3':2.64~ 3.60='D4u':3.60~3.90='D4':3.90~5.29='D5u':5.29~5.6 2='D5':5.62~6.27='D6u' :6.27~6.65='D6')
The equation can be adapted for low range by editing "*100" to "*256.6" to account for the low range gearbox ratio. I have not tested this yet but think it may not work as well for the same reason that the lower gears require a larger tolerance to work.
If anyone knows of a less cumbersome way of indicating the gear and lock-up status directly from the Toyota OBD PIDs I would be happy to be advised.
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