Replaced TCC PWM solenoid but still code 83

[losh1971]

I looked but I cant see which file talks about code 83?

 

[Wozza]

Post 8 there is a quad driver.zip file attached, download it ,unzip and read the trans outputs1.pdf

 

[Wozza]

clip from file

TCC "PWM" Solenoid Operation

When vehicle road speed rises above about 13 km/h, the
PCM causes the TCC "PWM" solenoid duty cycle to
change from 0% to 90% (point "A"), in readiness for an
apply of the torque converter.
To apply the torque converter clutch, the process the
PCM adopts, is as follows;
- The duty cycle is dropped to 0% (point "B") and a
measurable amount of time is allowed for the TCC
"ON/OFF" solenoid to turn "ON". This is shown as
the time between points "B" and "C" in Fig.
6C1-1-78. Note that, at point "C", the TCC
"ON/OFF" solenoid is activated.
- The time from point "C" to "D" is used to allow
converter (CONV FD) fluid to build in pressure and
move the Converter Clutch Valve into the apply
position.
- At this point, with the TCC "ON/OFF" solenoid
applied, the PCM then increases the duty cycle to
about 26% (point "E"). From this point, the duty
cycle is 'ramped' to around the 82% point ("E" to Figure 6C1-1-78 Torque Converter Clutch Solenoid
"F"). The rate at which the duty cycle is increased Operation
over this period of time, determines how quickly the
value of the regulated apply fluid increases and
therefore, how quickly the torque converter clutch is
applied. This rate of change also affects the
converter clutch apply 'feel'.
- As soon as the duty cycle reaches the 82% value, it
is then immediately increased to the maximum of
90%, to achieve full apply pressure in the regulated
apply fluid circuit (point "G").

NOTE: that the duty cycle and apply pressure will
continually vary, depending on vehicle specification and
operating conditions.
The two TCC solenoids work together so that TCC apply
or release rate can be calibrated for a variety of
situations.
If a fault is detected by the PCM, in the TCC "PWM"
solenoid electrical circuit, a DTC 83 will be set. When
DTC 83 is set, the PCM will inhibit 4th gear and TCC
operation if in hot mode.

 

[losh1971]

I will have a look tomorrow or on the weekend to see where these solenoids are on the trans if they are external that is. I will see if it shifts into overdrive or not on the way home. Gonna be interesting to see how it drives without a functioning speed sensor.

 

[losh1971]

I have reset the PCM and am still getting the error code 83. I have changed the speed sensor plug as that was also giving me grief. However my trans is still getting into 4th and is dropping down to 2000 revs after a few seconds upon hitting top gear. So not sure because what to do as it seems everything is working. Trans tech is 3 months booked out. Can I wait that long, to have him look at it?

 

[delcowizzid]

83 is pwm tcc solinoid .it was added in the late vr and from there up in all models.if you car is a late vr and someone put and early trans in it you will get that code cause it' not got the solinoid fitted .to fix it use and early vr memcal to suit a trans without pwm solinoid

 

[losh1971]

Mine is an early VR. Going by the build number it is a pre Nov 94. I have ordered a pre Nov memcal from Mace. Have I ordered the right one? I was told by the trans tech last year someone has replaced the trans. No idea if it is a late or early trans

 

[delcowizzid]

Early one should be fine

 

[delcowizzid]

Open up your ecu lid and tell me the number off the silver sticker on the chip in the memcal 4letters and 4numbers

 

[woteva]

If this fault has only just shown up, it could be a wiring or connection issue as you did have trouble with the speed sensor.