At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
My 91 prk ave has power going to the radio and heater controls, but nothing works, except the rear window defroster which won't stop working. Is it the little black box under the right hand dash causing all this?, or am I missing something?
Re: My 91 prk ave has power going to the radio and heater...
It sounds like you don't have a ground going to those areas. I think I would check for a ground...maybe pull the fuse on the rear defroster and see if it is even a part of the problem.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
if the radio is after market ...disconnect it and verify where the power and ground supplies are delivered..also if plugs are replaced make sure as to use "spark resistor" type plugs
The componet is Radio Antenna Module . There is B+ voltage going in on the drak green wire . One of the wire's connect's to the rear window defogger grid , this should have B+ voltage . One of the other wires is the Ant. in the window glass . The last one goes to the radio . Look's like inside the module is a resistor , not a rheostat ! Can't think why there would drop the voltage from 12 to 5 going to the defroster heater grid . What are you trying to diagnose ? Window defroster not working good ?
just a guess but being that the rear defrost is not woking id bet ist a fuse check owners manuel or go to a local autozone or the like store as thy should check this for free hope this is helpfull.
please post response good luck
The common problem with the rear defrost not working on a park ave is the antenna integration modules on the rear c-pillars. This is the way they make the rear defrost and antenna part of the same grid on the rear window. If your external mirrors are heating up, the rear window is getting juice too. They are fed from the same circuit. And yes, the relay does go in a particular way. Compare it to the position of the others nearby and insert with the same orientation.
My son's jeep had the same problem. The actuator that controls the the defrost damper came out. Pull the radio out of the dash to gain access to the damper. Looking into the radio hold on the right side you can just see the arm. Move the heater control switch and you can see it moving around. I put a drop of instant glue on the end and pushed back in and its been fine.
on the right side of steering colum there is a plug. there is a wire that gets warm and loses connection. check by moving plug. my heater and ac would not work and caused the vacume swith to stay open.
black = ground dark green = lights on input grey = panel lights pink = on input yellow = power input orange = battery power input
nca = shield ground tan = left fr spkr + orange/black = left & right spkr -neg lite green = right fr spkr +
nca = shield ground dark blue = right rear spkr + dark green/yellow = right & left spkr - neg brown = left rear spkr +
purple/white = display dim output pink = vehicle speed input ----------------------------------------------------------------------- **** 91 park ave without delco bose =
purple/white = display dim output pink = vehicle speed input
grey = left front - neg tan = left front + pos dark green = right front - neg light green = right front + pos
black = ground dark green = display dim signal grey = panel lights pink = power antanna yellow = ign input orange = battery power light blue = right rear - neg dark blue = right rear + pos yellow = left rear - neg brown = left rear + pos .
×