The following error codes are possible:
Fault
Monitors
TOT
Transmission oil temperature sensor open or short. The sensor is inside
the transmission.
OVER TEMP
Transmission oil temperature has gone over 262°F.
TPS
Throttle position sensor open or short.
BATT
Battery voltage below 7V or above 19V for 10 seconds.
PSWM
Invalid pattern from pressure switch manifold (internal transmission
sensor that tells TCU what gear is selected.)
If the TCU is completely disabled – power is lost, harness is cut, etc. – the transmission can still be
driven with limited functionality. Line pressure will be maxed out. Reverse will work. The
transmission will default to 3
rd
gear with the shift lever in Overdrive or L3/Drive. 2
nd
gear can be
selected by moving the shift lever into the L2 position.
EZ-TCU™ SYSTEM FEATURES AND OPERATION
Performance Mode
When Performance Mode is enabled, the TCU will use a more aggressive shift strategy (transmission
will hold gears longer and be quicker to downshift) and higher line pressure for firmer shifts. The
degree to which both are affected by enabling Performance Mode can be adjusted independently
through the Advanced Options in the handheld. This allows Performance Mode to be adjusted to suit
the driver’s preferences.
Manual Shifting (Bump Up / Bump Down)
By enabling Manual Shifting, the transmission can be controlled with two buttons – one for upshift,
one for downshift. The buttons can be mounted where ever they are convenient in the vehicle – on the
steering wheel, on the shift lever, etc. TCI® offers shifters and accessories that can be used for this
purpose.
In this mode, the TCU will hold the current gear until told to shift, unless the vehicle comes to a stop.
In that case, it will downshift into 1
st
gear to ensure easy acceleration away from the stop. A side
effect of this feature is that the rear wheels must be turning before the TCU will accept an upshift
request.
Because the TCU will not upshift on its own when Manual Shifting is enabled, care should be taken to
avoid over revving the engine. A rev limiter in a fuel injection or ignition system can act as a safety
net to protect the engine in case the driver waits too long to upshift.
Содержание EZ-TCU
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