As soon as I get home I will be on your page ordering...
Shifter stuck in park
- Thread starter dmazzotta
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Ok, just to finish out what I found here for the sake of searchers. Using jonheld's wiring diagram and a multimeter, I traced my problem to the shift lock controller computer. Power to the controller was appropriate with key on the on position and brake pedal pressed. The signal from the controller, through the blue/red wire, to the shift lock solenoid was reading around 300mV. This morning the shift lock solenoid was working appropriately so I unplugged it and checked the blue/red wire's voltage. As I expected, 11.5V.
For some reason the shift lock ECU is not sending a full strength signal all the time. Hopefully this helps someone else with this predicament. Cheers!
For some reason the shift lock ECU is not sending a full strength signal all the time. Hopefully this helps someone else with this predicament. Cheers!
Did you verify that solid blue wire was good ground?
You mentioned in a previous post that the solenoid was "chattering". That sounds like an intermittent connection to me.
Hmmm, didn't check for good ground through the blue wire, not sure how to go about that. Would it make sense that it would chatter of the "ECU" is sending a signal varying in voltage?
Personally, I would step on the brake and do a bit of percussive engineering on all the connections including the shift lock ECU box. You may be chasing your tail here.
I tried that a bit, didn't really hit the shift lock ECU, but rattled around a bunch of the wires and connectors. When it wasn't working, got the low voltage at the blue/red but was getting all good voltages and continuity from the rest of the system into the shift lock ECU, that's why I am suspecting the black box!
Did you ever get a solution to this? I'm in the same boat. But I haven't heard the solenoid clicking. I do have some mangled trailer wiring, cut that and still no love from the shift lock. I have a spare shift lock solenoid, it just seems very random that this would fail the week I buy the truck and remove the DVD player and subwoofer. I was messing with electrical in that area now there's a problem. It has to be related...maybe.
Resurrecting for the sake of solution. I ended up pulling a shift lock ecu out of an early '90s Camry. The cables were slightly different lengths, but had all the same connectors. Installed it and it cured the problem. Now I have to retrain myself not to reach for the shift lock override every time I drive...
