I have a '98 Grand Voyager. The battery failed. When we attempted to start the van, relays clicked and whirred under the dash and hood, but the van did not crank. Even after the key was removed from the ignition, the relays continued to click. Further investgation revealed that the battery need to be replace. Once it was replaced, the relays stopped the chatter. Now the AC control panel lights flash morse code. I'm hoping that it could be something as simply as a relay gone bad, but I don't know where to start looking for the relay (There's not one marked "AC Control Panel").

Does anyone have a suggestion?

Bubba

 

No replays are bad. The cooldown cycle and air-blend doors calibrations need to be reset. To do this start the van and turn on the A/C. Set the blower speed to high.

Your control buttons are in an "L" shape. Press the top and bottom buttons at the same time. The system will start the "cool down" calibration cycle.

After this cycle has completed, you'll need to press the far left AND far right button (at the same time). This will start the "AIR BLEND DOOR calibration. The doors will actuate through the recirc, defrost, vent, floor modes.

After BOTH cycles have been completed, switch off the van and restart it. MISSION COMPLETED!!

 

I also have the same problem. After I complete the cycle you suggested I get a sequence of lights. The top one blinks once and the third one blinks eight times, then the top one blinks once and the third one blinks nine times. This keeps repeating. When I restart the car the top 2 blink together continually. It seems that everything is working properly?? Any suggestions that you have would be appreciated.
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Are you sure it isn't the rear wipe and the intermittant buttonsthat areflashing? If the flashing buttons are 1 and 2 this means trouble--the top button blinking 1 means you are in level 1 diagnostics. The 2cnd button blinking 8 and 9 indicates that the driver side temp door did not reach its stop (8) and also a control head internal failure (9). If you want more test reults, pushing the wash button (3) will cycle the system through 4 additional test results, but I think you have enough.

 

Thankyou for responding.

This problem has been there for about a year now. I don't see anything that doesn't work. Can you tell me what this intails to get repaired and what difference it would make. Also if I leave it would it do damage.

Thanks a lot.

 

I agree--if the lights don't bother you, don't spend a penny on it.

 

Hello,
Goodness, goodness has this been a lot of trouble for just some blinking lights for changing a battery. Well I have the hookup on what to do, so do not fret anymore. I got it from another site and it only too 6 min. to complete:
"All you need to do is start your van. Slide your temp lever all the to the right (full cold)-mine was to the left. Turn Mode Control to 'panel' (the one that sends air to your face only). Turn the 'blower switch' to all the way to full. Now go to the left most three buttons. Simultaneously press and hold two buttons, the top one (rear wiper) and the bottom one (rear washer fluid). Hold these two for a few seconds. Once the lights come on solid and begin to flash, you can let go. A microprocessor will now take a few minutes to orchestrate the calibration of the air conditioning system. You will feel the air blow out of all the different zones at different intervals and see lights come on and go off. This means the AC computer has completed it's re-calibration cycle. Pressing the last (slow) flashing button complete the process. Turn off the ignition and restart the van. A successful calibration is indicated by the absence of blinking lights" OK this does work, but you need to watch the lights, because it start all over again if you miss the slow blinking light (top-left). Good Luck, Amanda
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I thought you had done the cal cycle already. You're lucky the cycle completed correctly, since if it fails the cal cycle, the lights will continue to flash. Good going

 

this process is a joke right? tell me this is a joke.

 

Have you read post #7 here: https://dodgeforum.com/forum/dodge-c...formation.html