reverse lockout solenoid;simple question
#22
Instructor
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It would shift fine - just wouldn't go into reverse because of the wheel speed sensor. And if I'd replaced the pilot bushing when I had it apart to do the clutch I would be $2500 richer.
#24
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St. Jude Donor '15
They probably gave the solenoid a good smack about $2495 later and didn't want to admit that's all it was..
#25
Le Mans Master
I wonder if he means the VSS. If the PCM can't determine speed it may not allow the solenoid to change position. I could not find a DIC code for that in the tranny section but it would seem to be an explanation.
#26
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Could be, but the sensor would have to be sending a constant speed signal so the car thought it was traveling above 4mph when stopped, which is a very odd failure for a speed sensor which is basically just a coil of wire. Typically, when they fail they quit sending any speed info so the speedometer always shows 0mph and reverse can be shifted all the time.
#27
Le Mans Master
But my premise was that the VSS was what was disconnected (not failed) and not a wheel sensor that was disconnected. If the PCM can't determine speed it might prevent energizing reverse. Just a theory to explain. I know a wheel sensor would not do it. The FSM was no help so I am trying the Sherlock Holmes approach.
Sort of what happens in a CL issue when the BCM can not determine whether the column is locked or not.
Your thoughts?
Sorry, I just reread your last sentence. Back to the drawing board. Dang it. You positive about going into reverse if the VSS has failed low?
Sort of what happens in a CL issue when the BCM can not determine whether the column is locked or not.
Your thoughts?
Sorry, I just reread your last sentence. Back to the drawing board. Dang it. You positive about going into reverse if the VSS has failed low?
Last edited by dadaroo; 09-25-2014 at 11:44 AM.