Code I039??
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Northstar Engines and System Technical Discussion Discussion, Code I039?? in Cadillac Engine Technical Discussion; Hello, does anyone know what this code means? thanks :coolgleam...
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    Rick94STS's Avatar
    Rick94STS is offline Cadillac Owners Member
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    Code I039??

    Hello, does anyone know what this code means?
    thanks :coolgleam

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Code I039??

    I039 .......................................... Loss of Road Sensing Suspension Data

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    Rick94STS's Avatar
    Rick94STS is offline Cadillac Owners Member
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    Re: Code I039??

    Thanks! That makes sense because the "service ride control" message appears on the DIC when the car is started. I am assuming the struts need replacing?

    Is there a way to permantly clear the DIC messages? I am also getting "servics trans" message and I just had it serviced.

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    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
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    Re: Code I039??

    I039 does not mean that you have to change your shocks, its a more serious code. It means that the IPC is not recieving the correct amount of data from the RSS module, if any. Although I haven't found the source of this problem, because I don't have it, I have read about it in various other posts here. Do a search for I039 on the forums.

    When it says "PCM?" scroll down using the fan down button until you reach "IPC?" press the fan up button go into that menu then the fan down button untill you reach "IPC CLEAR CODES?" then press the fan up button and you have cleared that code. If the problem is still there the code will come back up and you will see the SRC message again.

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    Rick94STS's Avatar
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    Re: Code I039??

    Quote Originally Posted by Krashed989
    I039 does not mean that you have to change your shocks, its a more serious code. It means that the IPC is not recieving the correct amount of data from the RSS module, if any. Although I haven't found the source of this problem, because I don't have it, I have read about it in various other posts here. Do a search for I039 on the forums.

    When it says "PCM?" scroll down using the fan down button until you reach "IPC?" press the fan up button go into that menu then the fan down button untill you reach "IPC CLEAR CODES?" then press the fan up button and you have cleared that code. If the problem is still there the code will come back up and you will see the SRC message again.
    Thanks, I did clear all the codes after getting directions from this forum but that code comes back.

  7. #6
    Eric2203 is offline Cadillac Owners Fanatic
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    Re: Code I039??

    Quote Originally Posted by Krashed989
    I039 does not mean that you have to change your shocks, its a more serious code. It means that the IPC is not recieving the correct amount of data from the RSS module, if any. Although I haven't found the source of this problem, because I don't have it, I have read about it in various other posts here. Do a search for I039 on the forums.
    Actually, I039 can mean pretty much anything. You must interrogate the electronic module controlling the suspension to find out what exactly is wrong (by grounding the diagnostic pin on it). And it can simply mean a bad strut. Best thread on the subject:

    http://www.cadillacforums.com/forums...ead.php?t=5541

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    WaterBoy is offline Cadillac Owners Member
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    Re: Code I039??

    That thread has 151 posts. Here's what I've extracted of interest to me. I should be giving credit to the posters of these gems. Thanks guys.

    You get into the SSS/CCR system by grounding pin 'C' on the ALDL. On the module there is a white plastic window with a LED behind it. It will flash codes after pin 'C' is grounded. It will repeat the codes as long as it is grounded. Kind of like the older GM flash diagnostics.

    Code-
    12 diagnostic mode
    23 left front strut
    24 right front strut
    25 left rear strut
    26 right rear strut
    31 lift/dive input error
    32 lateral acceleration error
    35 speed-sensitive steering error

    most of us deville guys have our modules in the trunk , there mounted to the back of the rear seat behind a carpet panel witht he suspesnion being almost all the way to the passenger side , we take the panel out to gain acess to the modules (theres a pass key and a couple other modules in adittion to the suspseion module) our suspension modules are held in by two 7mm screws , window can be seen clearly once the module is unbolted.

    Info -- Procedure to Disable Illumination of Service Indicator AFTER installing Passive Struts #00-03-11-001A

    Applies to:
     1989-1992 Cadillac Allante
     1991-1993 Cadillac Eldorado, Seville
     1991-1995 Cadillac DeVille
    This bulletin is being revised to clarify when this bulletin may be used to turn the service suspension lamp off. Also, a step has been added to the 1991 Cadillac Eldorado and Seville repair. Please discard Corporate Bulletin Number 00-03-11-001 (Section 3 -- Suspension)
    Some owners may bring their vehicles in for service with an illuminated service suspension light. The service suspension indicator lamp is telling the owner that the vehicle is due for strut/shock replacement, a maintenance item. The customer may elect to have passive struts installed in their vehicles due to the repair cost savings and/or parts availability. The installation of passive shock/struts will result in handling characteristics which are the equal to a like vehicle without the computer controlled ride, with all other components such as tires, tire pressure, springs, etc. being equal. The installation of (4) new passive struts will cause the continued illumination of the service suspension indicator. If desired by the customer, the service indicator may be disabled AFTER THE INSTALLATION OF THE (4) NEW PASSIVE STRUTS, using the appropriate service procedure listed below. This bulletin DOES NOT authorize this procedure unless (4) NEW PASSIVE STRUTS WERE INSTALLED ON THE VEHICLE.
    The wiring harness going to each strut and or chock assembly should be cut and taped back to clean-up the appearance both under the hood and under the vehicle. In addition, each specific vehicle will require a modification as outlined below:
     1989-1992 Allante with Speed Dependent Damping (SDD): Refer to the Service Manual page 8D-13 (1989) or 8D-14 (1990-1992). On these vehicles, adjust the BCM Override value "BS08". To do this, use the warmer/cooler button on the CCDIC to decrease the BCM override value "BS08" which is displayed when you enter the system by two(2). When the desired number is displayed on the CCDIC, it must be stored by holding the "Elapsed Time" and "Fuel Used" buttons until the new value flashes on and off. When it flashes on and off, the new value has been stored.
     1991 Eldorado and Seville with Computer Command Ride (CCR): Refer to the Service Manual page 8D-12. Set the BCM override value BS09 to 0 by using the warmer and cooler buttons. Store this value by pressing the Econ button on the climate control panel and the Instant Econ button on the Fuel Data/Drivers Information Center for about five seconds. The new value will be stored even through the indicator does not flash. Remove the key from the ignition. Disconnect both battery cables from the battery. When both cables have been disconnected, touch the ends of the cables together and hold for five seconds. This will discharge the capacitors in the system and allow the system to perform properly when the battery cables are reconnected. Advise the customer they will have to reset all radio stations and clock.
     1993 Eldorado and Seville with Speed Sensitive Suspension and 4.9L Engine Only: Refer to page 8A-43-6 in the 1992 Eldorado Seville Service Manual.
     Cut Circuit 1020 (PINK)
     Attach the IPC side of circuit 1020 to relay pin 87A
     Attach the module side of circuit 1020 to relay pin 86
     Run a ground wire to relay pin 30
     Run a wire from a switched ignition (hot in run) source to relay pin 85.
     1991-1993 DeVille with Computer Command Ride (CCR): Refer to the Service Manual, page 8A-43-0. Cut Circuit 1300 (Dark Green wire) at the CCR module (Pin C15) to disable the indicator lamp. Tape the wires back into the harness to prevent shorting to other components.
     1994-1995 DeVille with Speed Sensitive Suspension (SSS) and 4.9L Engines ONLY: Refer to the 1994 Eldorado, Seville, DeVille Service Manual, page 8A-43-14:
     Locate and cut circuit 370 (RED)
     Attach the IPC side of circuit 370 to pin 87A of the relay
     Attach the module side of circuit 370 to pin 86 of the relay
     Run a ground wire to relay pin 30
     Run a wire from a switched ignition (hot in run) source to relay pin 85.
     The following part numbers are required to make the correction on the 1993 Eldorado/Seville and the 1994-1995 DeVille:

    Part Number
    Description
    Qty
    12193601
    Relay
    1
    15306045
    Connector
    1

    Parts are currently available from GMSPO.


    FYI the above procedure worked like a charm on our 94 Deville with 4.9. There is no need to get the GM parts listed above. I got a $4 generic relay at the parts store and it worked great. It is very easy to do this install. It took me about 15 minutes. Here are more details in case anyone is interested:

    Parts needed: generic relay (most have the same numbers as in the above directions: 85,86,87a, 30) . The relays are on the shelf near the fuses at most parts stores. Some quarter inch female terminals, a couple of feet of 16 or 18 gauge wire, two splice doohickeys for tapping into wires without having to cut them. A couple of small wire nuts.

    1. Locate the module in the right rear compartment of trunk.
    2. Locate three wires: Red (circuit 370) I think this is C15 on the plug, Brwn 12 V ( C16)this is near the red wire and black ground (D15) is also near the red wire. The shop manual 800-43-14 shows the diagram with the correct labels.
    3. Wire the relay as described above. you only need to cut one wire, the red one. The black and brown can be tapped without cutting.
    4. After wiring is done you can attach the relay to the board with a small screw, there are several locations for doing this.

    That is it. All this does is force a polarity reverse for the red IPC circuit. When the module tries to ground the red wire to send the SRC message, this relay is energized and forces an open circuit. I wish we had done this 3 years ago. It is so nice to not see that annoying message, no more having to push the information button!

    Well, here's my $.02. I happen to work at a Cadillac Dealer doing steering n suspension. The code doesnt really mean much. You are suppose to ground terminal c to ground and count the # of flashes on your ride control module in the trunk. Very simple. But anyways. You cant get OEM parts forthis car anymore. But you can get a Bypass kit. YOu wire it in the trunk inline w/ your ride control module and the light will never come on again. As long as your car doesnt ride bad its probably just the electronic part of a strut that has went bad. Someone may have already said this but there were to many replies to your question to read them all.

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