ECU Reset - WRX MY 03
11 September 2003, 08:33 PM
#1
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Nov 2001
Location: scoobypedia.co.uk
Posts: 262
Likes: 0
Received 0 Likes
on
0 Posts
Dear Scoobynet'ers,
I am going to be fitting my Dawes to my WRX 03 soon. In preparation, I would like to know how you manually reset the ECU.
I used to have a classic MY00 (for the last 3 years) and knew how to reset that. The MY03 looks different. What's the deal with this one?
Regards,
Steve.
I am going to be fitting my Dawes to my WRX 03 soon. In preparation, I would like to know how you manually reset the ECU.
I used to have a classic MY00 (for the last 3 years) and knew how to reset that. The MY03 looks different. What's the deal with this one?
Regards,
Steve.
15 September 2003, 01:05 PM
#3
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Nov 2001
Location: scoobypedia.co.uk
Posts: 262
Likes: 0
Received 0 Likes
on
0 Posts
Looks like I'll have to assume that the WRX MY03 (and possibly MY01 onwards) do not have a "manual" reset. Let's hope I never need to reset it, as the dealer will know what's been "played" with.
15 September 2003, 01:54 PM
#4
Scooby Regular
Join Date: Nov 2003
Location: where the wild roses grow
Posts: 5,122
Likes: 0
Received 0 Likes
on
0 Posts
You're correct, the Denso ECU's don't have a manual reset function like the JECS ones. The Denso units apparently have a non-volatile RAM, so even disconnecting the battery won't do it. The only way is via a diagnostic connection, so you'll be needing DeltaDash, SECS, or a Select Monitor. Generic OBDII tool may also be able to do it.
If you're worried about warranty issues, suggest you leave the car standard!
[Edited by greasemonkey - 9/15/2003 1:56:52 PM]
If you're worried about warranty issues, suggest you leave the car standard!
[Edited by greasemonkey - 9/15/2003 1:56:52 PM]
15 September 2003, 03:58 PM
#5
Scooby Regular
Join Date: Jul 2003
Posts: 478
Likes: 0
Received 0 Likes
on
0 Posts
Greasemonkey,
I believe NV memory is a pre-requisite for any OBD II or OBD III compliant vehicle, so as you say, reset is only possible with the correct tools.
Do you know if the Denso (MY03) ECUs store the vehicle mileage? I ask this because I would be interested to know just how long a joy-ride the joker that fitted my Tracker went on (he had the instrument cluster removed when he left to 'test' it).
I believe the odometer is just a simple pulse counter (as on MY97 onwards cars), so the difference between the odometer mileage and the ECU milage will roughly equate to my blood pressure level!
I believe NV memory is a pre-requisite for any OBD II or OBD III compliant vehicle, so as you say, reset is only possible with the correct tools.
Do you know if the Denso (MY03) ECUs store the vehicle mileage? I ask this because I would be interested to know just how long a joy-ride the joker that fitted my Tracker went on (he had the instrument cluster removed when he left to 'test' it).
I believe the odometer is just a simple pulse counter (as on MY97 onwards cars), so the difference between the odometer mileage and the ECU milage will roughly equate to my blood pressure level!
09 November 2003, 09:03 PM
#7
Scooby Regular
Thread Starter
iTrader: (1)
Join Date: Nov 2001
Location: scoobypedia.co.uk
Posts: 262
Likes: 0
Received 0 Likes
on
0 Posts
chrisp,
My reason for the question was just in case I did not correctly seal the pipe back to the standard electronic boost controller. On my last MY00 this could lead to a CEL that would need to be reset.
Thanks for the information on how the ECU quickly changes, I didn't know that.
Regards,
Steve.
[Edited by stevecrisp - 9/12/2003 1:45:48 PM]
My reason for the question was just in case I did not correctly seal the pipe back to the standard electronic boost controller. On my last MY00 this could lead to a CEL that would need to be reset.
Thanks for the information on how the ECU quickly changes, I didn't know that.
Regards,
Steve.
[Edited by stevecrisp - 9/12/2003 1:45:48 PM]
Thread
Thread Starter
Forum
Replies
Last Post
aaron_ions
General Technical
17
03 November 2021 11:07 AM
aaron_ions
General Technical
1
17 September 2015 10:42 AM
