venture1 Posted April 18, 2017 Share Posted April 18, 2017 no Icp or crt looked at every thing i can think of. replaced inverters still no light . crt works .can guess buttons and they work .does anyone have any ideas? please! Link to comment Share on other sites More sharing options...
DAVES89 Posted April 18, 2017 Share Posted April 18, 2017 Look at the slide switch on the Headlight switch. Move it to the right. Link to comment Share on other sites More sharing options...
venture1 Posted April 18, 2017 Topic Author Share Posted April 18, 2017 slide switch is working, turns the lights on the switches up and down , just no dash or screen lights if the controller for the crt was bad i could not get the heater and radio to work by pressing around on the screen,, dont know what to buy to fix it Link to comment Share on other sites More sharing options...
Ronnie Posted April 18, 2017 Share Posted April 18, 2017 A forum member had a similar problem not too long ago. you can read through that conversation and maybe it will help you find your problem. Dash lighting and touch screen Link to comment Share on other sites More sharing options...
venture1 Posted April 18, 2017 Topic Author Share Posted April 18, 2017 i will check it out -- thank you Link to comment Share on other sites More sharing options...
venture1 Posted April 19, 2017 Topic Author Share Posted April 19, 2017 checked the volts on all the wires going to the icp and with key on and park lights on there was only 7.5 volts on one wire. have no manual but i think there should be a few more volts. Link to comment Share on other sites More sharing options...
venture1 Posted April 19, 2017 Topic Author Share Posted April 19, 2017 my bad fuse blown but still no lights Link to comment Share on other sites More sharing options...
venture1 Posted May 6, 2017 Topic Author Share Posted May 6, 2017 just had the crt rebuilt 250$ got a used ipc 150$ still will not light up got two inverters from jim 30$ --- about to pull my hair out -- think it mite be the crtc but dont know where to get one-- has anyone got any thought about what i should do? sure would be thankfull Link to comment Share on other sites More sharing options...
DAVES89 Posted May 7, 2017 Share Posted May 7, 2017 Try Jim Finn he would have one. Here's a thought I have always had; That unless your car has been really hacked up by a previous owner it is always an end component, That philosophy has always worked well for me in regards to repairs. Fromk what I remember about what you have done; Checked the fuse and replaced it Rebuilt CRT Replaced IPC Replaced Inverters All that really is left is the CRTC controller. However when you contact Jim you may want to get his opinion. He has owned multiple Reattas over the years and has sold parts just about as long. He would certainly know. Link to comment Share on other sites More sharing options...
kdirk Posted May 7, 2017 Share Posted May 7, 2017 Make sure you get a 1988 CRTC. While the 89 version is plug and play usable in an 88, the firmware code is different between the two years. I've not yet found whether there is some functional difference, but something changed as GM issued different 4 letter codes to ID the firmware for each of the two years. I suspect, at a minimum, that the fuel economy calculation may be tweaked in the 89 version as the 88's received a late revision ECM PROM to address the accuracy of the fuel economy readout. Link to comment Share on other sites More sharing options...
venture1 Posted May 7, 2017 Topic Author Share Posted May 7, 2017 thank you all, i sent jim a note to ask him what he thought and if he had a crtc Link to comment Share on other sites More sharing options...
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