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Thread: Power windows, Central Locking and Speedometer problem Honda Accord 2002

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    Default Power windows, Central Locking and Speedometer problem Honda Accord 2002

    1) I have just purchased a Honda Accord CF-3 2002 F18B A/T about a month back. The car had following electrical issues:
    a) Two check lights EPS and SRS
    b) Power windows and central locking not working. Power windows operate from their respective locations but not from driver?s master control switch.
    c) Speedometer, Odometer and trip-meter not working
    2) I went to see three different electricians who unanimously declared that all the issues were related to the master switch and multiplexes or CAN Bus controllers located under the dash- one on the driver?s side and other on the passenger?s side. All of them advised to find out the controllers from junk market and get these at hand before commencing any repairs. Unfortunately the item was not available in the local junk market. The last electrician I visited seemed to be more conversant with the issue and technically quite sound. Moreover he had the some of the schematics of electrical wiring and some software on his computer related to repairs (these were not specifically related to the make and model of my car but he said he could get hold of the required ones from somewhere). He vows to make a try to repair these controllers. Another option suggested by all these electricians is to install a remote controlled central locking device using the actuators already fixed and make power windows operational by changing the master switch with some other one with a different mechanism and in this case existing wiring and motors will be used. However all could not satisfy me as to how will they make speedo and odo operational and said that they will see to it.
    3) I contacted a friend in Peshawar who owns a junk business and he suggested that I should go there with the car and find the required parts and get the problem fixed there so that if anything does not match it may be returned. Else he can send me the controllers which may not bear exact part nos but will be of similar models but in this case returns are not guaranteed. Moreover it may become inconvenient if anything else is found to be defective.
    4) After all this I turned to the internet search for these issues with other people and suggested or tried solutions. Resultantly, I found a fix for EPS (EPS Reset? - 8th Generation Honda Civic Forum) and SRS light( ***Resetting SRS Light** - Honda-Tech). When I tried, the EPS reset procedure worked like a charm and EPS was back with all the bells and whistles and the check-light was gone. However the SRS reset did not work. I found two means for resetting power windows and central locking Resetting the Power Window Control Unit and All of the sudden my power locks dont' work, cant control passenger side windows - Honda-Tech but both failed for me. The reasons could be ? for SRS reset probably I failed to exactly locate the Memory erase signal connector, the reset procedure was for some other generation cars or for some other reason which I could not understand.
    5) I must add here that reset of EPS by following the procedure learnt from internet lowered my confidence in the diagnosis given by the electrician that both the controllers are altogether gone and also made me think that there must a way to wake up the computer which is fast asleep and not letting the system work as it should.
    6) A few days back I saw a similar model car in the market and I requested the owner to allow me to check my power windows master switch by swapping with the one installed in his car and he kindly agreed. The result was a good news for me that the switch worked fine in his car.
    7) In view of the narration above, I request the experts to advise me if they have any knowledge of a reset procedure for my problems. Else suggest whether I should go for repair of the controllers or to get them replaced.


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    Default

    never owned a accord..... But the thing is power windows should not have any link with the ecu... The security system might have a link with ecu... And the eps too....
    Get it scanned might u get thr error code...
    Never Play For The Team, Always Play For Your Own FAith !!

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    this model accord uses a muxer for the interior like the CL7 and CL9 have.

    extract the muxer error codes - they can be manually flashed with the roof lamp, Do not try to repair the muxer - get a new one if it is damaged.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    ^^ Thanks for the valuable suggestion. I was also thinking on the same lines.

    Can you please guide me or direct me to a link on how to flash the error codes manually.
    I have been searching, without success so far, for a service manual with electrical schematics. I may not understand the schematics completely but will get at least some idea on the subject. This may not be helpful in solving the problem but may be of some academic value.
    I have managed to download a service manual for this generation of accords but it pertains to USDM while mine is JDM. The fuse box and B-CAN is similar in appearance as seen in pics and fuse arrangements. However, I am still shaky to follow the diagnostics lest I mess something else.
    Here I would like to share an important piece of information gathered from this manual which states that all the grounds should be checked since a disconnected ground may seem to be simple but disturbs functions.
    Waiting for guidance as well as sugesstions.

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    Downloaded manuals from various sites but none was specifically for this trim. However, what I gathered from scrolling through these manuals was that there are 3 multiplex controllers, a controller for the srs, ECU which in this case is called PCM and is more than ECU, another Control Unit exclusively for the EPS. So I figured out the one related to power windows and central locking, searched the junk market for a replacement but could not find one. A few days back one of the electricians claimed that he has a replacement but price he asked was much more than what I expected. However when he replaced it for trial, I paid him what he had asked since each and every function got restored, all at once.
    Now only the speedometer needs to be fixed. The meter itself is working but is not getting input from speed sensor, though the sensor is functioning properly. According to the electrician, ECU or PCM needs replacement as the speed signal from VSS is routed through PCM to speedometer but we still have to find out a replacement PCM. Although my mind does not accept his diagnosis, however it can only be confirmed once a replacement PCM is available to try.
    I think this would be an easy fix, though heavy on my pocket. The vehicle is such a pleasure drive and everything in the electricals, body and interior is in such genuine condition that I have decided to spend the amount to restore it completely.
    So guys if you can help to mind me the PCM for a reasonable price, I will be grateful.

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