A/C & Radio Electrical Issue (I think) - ZR-1 Net Registry Forums

TX '90 ZR1 · 02-04-2019

Drove the car yesterday and everything was working fine. Needed to move car in shop today and noticed that the AC controller had no green lights on, the display had a short dash followed by 2 longer ones. The radio is not coming on either. Antenna not going up. SVC shows when turning radio on, but nothing else except the time which is stuck on 01:00.
By using the fan buttons on AC controller can get into diagnostic mode. No codes showing. Checked all fuses as good.
Is there a common wiring connector that could be affecting these?
Any ideas would be appreciated.

GOLDCYLON · 02-04-2019

How is the Battery condition? C4s do wierd electrical things with bad cells etc.

S.hafsmo · 02-05-2019

When I had this issue, it was caused by a faulty AC programmer. I did however not have a faulty radio, only the three dashes in the AC-screen. They share wiring, so it could be a common problem somewhere.

TX '90 ZR1 · 02-05-2019

Thanks Guys.
The battery is about a year old. AC/Delco. Believe it's good, but will do a load test to be sure.
I'm going to check the circuits that are common to both. Nearly seems something is not making a good connection somewhere.
I had the dash apart a few months ago getting the radio redone and cleaned the AC control buttons while I had it out. Maybe something got shook loose?
Other suggestions are welcome and appreciated.
Thanks again,

TX '90 ZR1 · 02-05-2019

FOUND IT !!
Started taking things apart in reverse order from the last time I had pieces off of the dash. Testing operation as I go.
Come to find out, one of the wires going to the ALDL had somehow gotten pinched under a Tinnerman nut on the drivers side lower trim panel.
When I started removing the screw from this location, everything went to normal. Re-routed wire and all is good.
Don't ask what this wire had to do with the radio and AC. I've no clue.
A plan and a little luck fixes a lot of things!!

GOLDCYLON · 02-05-2019

Quote:

Originally Posted by TX '90 ZR1

FOUND IT !!
Started taking things apart in reverse order from the last time I had pieces off of the dash. Testing operation as I go.
Come to find out, one of the wires going to the ALDL had somehow gotten pinched under a Tinnerman nut on the drivers side lower trim panel.
When I started removing the screw from this location, everything went to normal. Re-routed wire and all is good.
Don't ask what this wire had to do with the radio and AC. I've no clue.
A plan and a little luck fixes a lot of things!!

Good news you found it! Thanks for closing the problem out to help the next forum mate !!!

TX '90 ZR1 · 02-05-2019

Quote:

Originally Posted by GOLDCYLON

Good news you found it! Thanks for closing the problem out to help the next forum mate !!!

I receive a lot of help here. Try to repay when I can.

Paul Workman · 02-06-2019

Quote:

Originally Posted by GOLDCYLON

Good news you found it! Thanks for closing the problem out to help the next forum mate !!!

02-04-2019	#1
TX '90 ZR1 Join Date: Oct 2017 Location: TX Posts: 2,042	A/C & Radio Electrical Issue (I think) Drove the car yesterday and everything was working fine. Needed to move car in shop today and noticed that the AC controller had no green lights on, the display had a short dash followed by 2 longer ones. The radio is not coming on either. Antenna not going up. SVC shows when turning radio on, but nothing else except the time which is stuck on 01:00. By using the fan buttons on AC controller can get into diagnostic mode. No codes showing. Checked all fuses as good. Is there a common wiring connector that could be affecting these? Any ideas would be appreciated. __________________ Kenny 1990 #442

02-04-2019	#2
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: A/C & Radio Electrical Issue (I think) How is the Battery condition? C4s do wierd electrical things with bad cells etc. __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

02-05-2019	#3
S.hafsmo Join Date: Nov 2016 Location: Norway Posts: 397	Re: A/C & Radio Electrical Issue (I think) When I had this issue, it was caused by a faulty AC programmer. I did however not have a faulty radio, only the three dashes in the AC-screen. They share wiring, so it could be a common problem somewhere. __________________ - '90 ZR-1

02-05-2019	#4
TX '90 ZR1 Join Date: Oct 2017 Location: TX Posts: 2,042	Re: A/C & Radio Electrical Issue (I think) Thanks Guys. The battery is about a year old. AC/Delco. Believe it's good, but will do a load test to be sure. I'm going to check the circuits that are common to both. Nearly seems something is not making a good connection somewhere. I had the dash apart a few months ago getting the radio redone and cleaned the AC control buttons while I had it out. Maybe something got shook loose? Other suggestions are welcome and appreciated. Thanks again, __________________ Kenny 1990 #442

02-05-2019	#5
TX '90 ZR1 Join Date: Oct 2017 Location: TX Posts: 2,042	Re: A/C & Radio Electrical Issue (I think) FOUND IT !! Started taking things apart in reverse order from the last time I had pieces off of the dash. Testing operation as I go. Come to find out, one of the wires going to the ALDL had somehow gotten pinched under a Tinnerman nut on the drivers side lower trim panel. When I started removing the screw from this location, everything went to normal. Re-routed wire and all is good. Don't ask what this wire had to do with the radio and AC. I've no clue. A plan and a little luck fixes a lot of things!! __________________ Kenny 1990 #442