[wisconative]

I bought a 91 Camry 2vzfe last week.
ECT/Power button wasn't working.
It does have light on the button when the headlights are on.
Then 2 mornings ago, I notice "norm" was lit up.
I put it into drive and "norm" disappeared.
This morning "norm" reappeared for about a minute.
I pressed the button a few times to close the "Power" circuit, "Power" didn't light up.
Pressed again "norm" reappeared.
Started to drive away and then "norm" disappeared again.

Any ideas as to why it would only light up first thing in the morning and then disappear for the day?

I found a diagram for the circuit, and it seems pretty simple. I had been hoping to just buy a new switch, but since it has lights when the headlights are on and sometimes shows up on the cluster, I'm just hoping it's not a bigger electrical problem.

 

[Phil_Bleach]

I will only say this: mine used to do the same thing when I bought it. One day I removed the indicator from the dash because I thought it would be cool to have LED's in there instead of incandescent bulbs and for some reason it cured the problem, don't ask me how.

 

[wisconative]

When you pushed yours to engage "pwr" did it change the shift points?
Mine does not seem to alter the shift points as far as I can tell, but I don't have a tach, so its just on feel.

 

[Phil_Bleach]

How come you don't have a tach on a V6? :whatthe:

Yes it does change the shift points, PWR mode seems to hold lower gears for longer compared to NORM.

 

[wisconative]

DLX not LE.

 

[Phil_Bleach]

Well to be honest you won't feel much of a difference between NORM and PWR unless you floor the pedal. In city driving conditions, not so much.

 

[71Corolla]

The plate through holes on the circuit board are probably bad, to fix you'll need to scratch off the solder mask on each side and solder a wire to bridge the bad plate through.

 

[wisconative]

Solder on the switch?

 

[71Corolla]

Solder on the switch?

No on the PRNDL indicator. IIRC here are the pads that usually go bad although it could be others.

 

[white90dx]

The ECT PWR button only makes a difference in shifting at part throttle, not full throttle (max RPM shift point is the same). It is fairly noticeable if you watch the tach (if equipped).

As 71Corolla said, it is just the connections on the indicator board. The switch and transmission control is probably working correctly.

-Charlie

 

[Kingdom934]

The ECT PWR button only makes a difference in shifting at part throttle, not full throttle (max RPM shift point is the same). It is fairly noticeable if you watch the tach (if equipped).

As 71Corolla said, it is just the connections on the indicator board. The switch and transmission control is probably working correctly.

-Charlie

My Gen1 will hold each gear (WOT) up until red line in PWR and about 500-750rpm or so less in NORM. Might be different in the Gen2. Also the transmission will downshift to the lowest gear prolong not near red line (say in 2nd when at 50mph) while the 'NORM' mode will conservatively shift to lowest 3rd at that same speed when WOT.

 

[Timpy311]

My 3rd gen Camry and 5th gen Celica both shift like kingdom described. In fact I didn't know the Camry had a hole in the air intake tube so it would stumble from a start, PWR more would help so it didn't trip over air. Needless to say the hole got fixed and you can tell the difference between norm and pwr mode, half or full throttle.

Tim