Questionwhere can i get this scanner and is it cheaper to buy it or have some one do it i'd like to buy it if its not to expensive, where can i? thanx for all your help your great i really appreciate your quick responses.
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i have a spare one that i got off another 94 deville would hurt if i switched them to see what happens?
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i followed the procedure and cleared all codes i drove for about 500ft and the abs and airbag started flashing along with batt voltz high it continued for about 5-7 miles then stopped. it stayed off for about 25-30 miles then just the airbag light began to flash with the voltz high message. when i stopped and checked the codes i found p016,i039, & i042 all history. i just dont understand the altenator and regulator harness adapter are new and the batt was checked and found ok what could it be please help.
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the codes i got were p016,p040,p052,i039,i042,i052 all of them history
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hi,
i have a 94 sedan deville and about 1 month ago while i was driving the air bag and anti lock brake lights began to flash and the message board read "battery voltz high" the cars performance was bothered while this was happening. then it would go away and sometimes come back after a couple miles and other times it wouldnt come back on for a week or so. i had the altenator and battery tested 2weeks ago and they were ok, but the wire harness for the regulator was dried up so i replaced it last week and then had the altenator & batt tested and the altenator was found to be no good. so 2 days ago i replaced the altenator with a new on and drove it for a day with no problem and then today while i was driving the message came back up again. what do you think the problem could be? please help me.
Answer -
Perform this procedure:
!. Ignition ON, Engine OFF.
2. Simultaneously push and hold the OFF and WARMER buttons until the complete display illuminates and release the 2 buttons.
3. Write down any LETTER/NUMBER combinations that appear in the EXACT order in which they appear.
4. Turn OFF ignition.
Let me know what LETTER/NUMBER combinations you got.
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OK, What you need to do now is CLEAR the codes from the computer.
1. Ignition ON, Engine OFF.
2. Simultaneously push and hold the OFF and WARMER buttons until the whole display illiminates and then release the buttons..
3. After the codes display you will see PCM?
4. Push and release the HI button and you will see PCM DATA.
5. Keep Pushing and releasing the LO button until you see PCM CLEAR CODES.
6. Push and release the HI button and you will see PCM CODES CLEAR and then wait 3 seconds and the P codes will be erased.
7. Push the LO button until you see DATA.
8. Push the AUTO button to exit diagnostics.
1. Simultaneously push and hold the OFF and WARMER buttons until the whole display illiminates and then release the buttons..
2. After the codes display you will see PCM?
3. Push and release the LO button and you will see IPC.
4. Push and release the HI button until you see IPC DATA.
5. Keep Pushing and releasing the LO button until you see IPC CLEAR CODES.
6. Push and release the HI button and you will see IPC CODES CLEAR and then wait 3 seconds and the I codes will be erased.
7. Push the AUTO button to exit diagnostics.
8. Turn OFF the ignition.
Go drive the car and see if any of the codes reappear and let me know what they are.
By the codes that displayed it is obvious that you have an intermittent problem with the battery and or the alternator.
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The only other component that can cause this is a faulty PCM of which you should have a scanner to test it.
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I would not do it. You need to get a scanner to read the data stream to and from your PCM. If there is an intermittent fault in the alt or an intermittent problem with the battery, You will destroy this replacement PCM.
AnswerYou can either have your Cadillace dealer look at it with there scanner or buy one like mine for $600.00.
Once you learn how to read and interpret the scanners findings a diagnosis is not to difficult.
If you were close to NM it would take about 10 minutes to find the problem.
Let me know what you find out.
