shift interlock problem

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el902276

New Member
I have a 2005 Accord EX 4cyl and am having a problem with the shift interlock system. The shifter is stuck in park, I must use the shift release to shift out of park.

I have already checked the brake switch and it is good.

I checked the shift release solenoid at the gear shift and it is good.

I thought the problem might be the throttle position sensor. I tested the output voltage of the tps and it is 0.5 volts closed and ~4.5 volts at WOT which I believe is the correct reading.

Now the strange thing is that if I unplug the throttle position sensor, the shift lock release works fine. As soon as I plug the tps in again, the shifter doesn't release again. Can anyone help? Thanks!
 
If memory serves, there is a switch and a lock in the key cylinder too, check that and make sure it works properly.
 
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