Questionno, I don't know how to clear the codes.
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Followup To
Question -
I ran the codes EO47 History,eo52 History,eo55 current,eo62history,io22 history,io33historyio34history,io37 history,io39current,io52history,ao37history,ao48history. Hopefully this will help thank you.
rick
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Followup To
Question -
I have a 92 eldorado and after driving for a while all my electronic heat and fuel econoimy guages go to staight lines and stop working and it goes to high defrost and you have no controls. If the car sit for a few days it will take quite a while to go into default but if its run everyday it happens almost as soon as you start the car, it will eventually go back to working status the shuts of again randomly, and goes back to default mode. I also had very little heat during the winter, there is very little air on the drivers side and more on the passenger but it doesn't stay warm for long, the blower sounds like its working well but it seems to be sending most of the air outside the windshield on the 2nd vent from the left on the passenger side. any help would be appreciated.
Thanx
Rick
Answer -
Test procedure for you to do.
1. Ignition ON, Engine OFF.
2. Simultaneously push and hold the OFF and WARMER buttons until the whole display illuminates and then release the buttons.
3. Write down every LETTER/NUMBER combination that appears until it stops and displays PCM?.
4. Push the AUTO button and turn OFF the ignition.
5. Let me know what all the LETTER/NUMBER combination that appear.
Answer -
OK, Looks like we have a communications problem between the INSTRUMENT PANEL CLUSTER (IPC) and the POWER CONTROL MODULE (PCM).
Do you know how to CLEAR all the codes ?.
AnswerOK, Do this:
1. Ignition ON, Engine OFF.
2. Simultaneously push and hold the OFF and WARMER buttons until the whole display illuminates and then release the buttons.
3. After all the codes display you will see PCM?
4. Push and release the HI button and you see DATA.
5. Push and release the LO button until you see CLEAR CODES displayed.
6. Push and release the HI button.
7. You will see CODES CLEAR. Wait 3 seconds and then push the AUTO button and turn OFF the ignition.
Now repeat the original sequence I gave you and see what codes reappear:
1. Ignition ON, Engine OFF.
2. Simultaneously push and hold the OFF and WARMER buttons until the whole display illuminates and then release the buttons.
3. Write down every LETTER/NUMBER combination that appears until it stops and displays PCM?.
4. Push the AUTO button and turn OFF the ignition.
5. Let me know what all the LETTER/NUMBER combination that appear.
