P1787 & P1698 - MINI Cooper Forum
Go Back   MINI Cooper Forum > MINI Technical Forums > MINI Faults & Fixes > First Generation Faults & Fixes


First Generation Faults & Fixes MINI faults and fixes 2001 - 2006

Mini2.com is the premier Mini Cooper Forum on the internet. Registered Users do not see the above ads.
Reply
Similar Threads
Thread Thread Starter Forum Replies Last Post
Automatic 2003 Mini Cooper wouldn't start and codes P1698 & P1787 were shown. Tyna Welcome New Members 2 Nov 12th, 2013 05:47 PM

 
LinkBack (1) Thread Tools Rate Thread
  1 links from elsewhere to this Post. Click to view. #1 (permalink)  
Old Aug 4th, 2008, 11:08 AM
MINI2 Newbie
Offline
 
Join Date: Aug 2008
Posts: 2
Local Time: 02:18 PM
United States
P1787 & P1698

I haven't been able to find much on this problem. Got a 2002 mini with CVT. The car runs smoothly but acts as if its stuck in the equivalent of 2nd or 3rd gear. Also an X is displayed to the left of the gear selection display on the speedo, Like xP or xD, whatever gear is selected. A friend with access to a good diagnostic computer pulled codes P1787-bi-polar stepper motor open circuit, and P1698 - ECU malfunction.
Online I have found references to a transmission control unit also called a GIU, but the descriptions of where it's located have been inaccurate or unclear. Does anybody know where it's located?

I have found what I think is the ECU in a slot on the left side of the battery box, which is where one desription said that the GIU was located. Other pictures show the GIU mounted on a bracket, but no location is given.

i'm just guessing, but the stepper motor is probably inside the CVT, and does the "shifting". What I need to know is how to determine if the problem is in the actual stepper motor, of if it' s an ECU or GIU problem.

Last edited by ratfink77; Aug 4th, 2008 at 11:11 AM. Reason: more details
Reply With Quote
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old Aug 4th, 2008, 10:54 PM
mab01uk's Avatar
MINI2 Master
Offline
 
Join Date: Nov 2006
Location: London
Posts: 5,704
Local Time: 07:18 PM
United Kingdom Male
The GIU (Automatic Transmission Control Module) is situated under the dashboard up above the brake pedal, bolted to brake master cylinder flange. (A7000 on circuit diagrams). Hope this helps
Reply With Quote
  #3 (permalink)  
Old Aug 5th, 2008, 01:13 AM
MINI2 Newbie
Offline
 
Join Date: Aug 2008
Posts: 2
Local Time: 02:18 PM
United States
Found the solution

Mini Cooper Transmission Relearn Procedure


If the gear selection display on your Mini Cooper has an x before the gear selected,

like xP or xD or xR, then you need to run this procedure.

The usual cause of this is a dead or disconnected battery for a long period of time.

First make sure you have a good battery that will hold a charge or fix the charging

system problem.

Get the car someplace where you will be able to drive for a mile or two without

interruption on a fairly level road.

Follow ALL steps and don't skip anything.

Clutch Adaptation

1. Begin with a cold engine and start the car. Shift to N for 10 seconds, then shift

to D for 10 seconds.
Shift to P. Display says xP.

2. Repeat the following ten times. Shift to N for 3 seconds, then shift to D for 3

seconds.
Shift to P. Display says xP.

3. Repeat the following ten times. Shift to N for 3 seconds, then shift to R for 3

seconds.
Shift to P. Display says xP.

Step-up Ratio Adaptation

1. Accelerate vehicle to a speed greater than 80 km/h. Don't be afraid to go above

the redline on the tach for a few seconds. At this point the car may buck and snort

a little as it tries to get into a higher ratio. As soon as it settles into a higher

gear and the revs are above 4500, rpm let off the accelerator quickly. Don't

gradually let off.

Allow the car to decelerate naturally and you will feel the ratio changing as it

slows to nearly a stop. Do not use the brakes to stop.

You will probably have to repeat this speed up and slow down procedure at least two

or three times until the x is no longer displayed. Each time you will notice that

you are able to go faster. Make sure to get the rpms above 4500 each time.

2. Stop the car and repeat steps 2 and 3 of the Clutch Adaptation procedure to setup

hot transmission clutch values in the computer.


3. Turn off the ignition switch completely.


Now you can start the car and drive normally. Do some aggressive driving and some

normal driving to give the computer a wide range of values to work with.

If your display now shows E in front of the gear selection display, or the car never

"shifted" to a higher ratio during the Step-up Ratio Adaptation, you have other

problems.
Reply With Quote
Sponsored Links
Advertisement
 
Reply
Tags: , ,



LinkBacks (?)
LinkBack to this Thread: http://www.mini2.com/forum/first-generation-faults-fixes/160678-p1787-p1698.html
Posted By For Type Date
Everything about p1698 - Yahoo! Glue This thread Refback Mar 23rd, 2009 12:30 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Automatic 2003 Mini Cooper wouldn't start and codes P1698 & P1787 were shown. Tyna Welcome New Members 2 Nov 12th, 2013 05:47 PM

» Recent Threads
Tow Hitch for '13 Roadster
Feb 17th, 2014 05:56 AM
Last post by Angib
Today 06:02 PM
14 Replies, 1,568 Views
Palo Uber Rear Wing Extension
Nov 7th, 2008 08:01 AM
Last post by Yads
Today 02:32 PM
6 Replies, 2,013 Views
Need advice on what a mechanic "said "
Sep 24th, 2014 05:55 AM
Last post by djcheezy
Today 02:15 PM
7 Replies, 2,149 Views
Bought 2003 after 5 yrs of sitting; help!
Yesterday 06:59 PM
Last post by megatars
Today 02:10 PM
4 Replies, 247 Views
Mini Cooper S Parts program
Yesterday 02:46 AM
Last post by djcheezy
Today 12:46 PM
2 Replies, 265 Views
Engine Noise / Resonance
Feb 4th, 2004 07:21 PM
Last post by vlado.rekso
Today 11:17 AM
16 Replies, 1,626 Views
$105 @ Willow Springs Big Willow October 11-12, 2014
Today 08:36 AM
by harvie
Last post by harvie
Today 08:36 AM
0 Replies, 86 Views
Window faulty? Help
Today 03:07 AM
Last post by m3ntal_l2
Today 03:07 AM
0 Replies, 146 Views
Window weird noise
Today 03:07 AM
Last post by m3ntal_l2
Today 03:07 AM
0 Replies, 125 Views
Exhaust on R53 '05 'S'
Sep 19th, 2014 07:28 PM
Last post by ExclusiveWorkshops
Yesterday 10:19 PM
6 Replies, 611 Views
MINI Breakers.....
Yesterday 10:15 PM
by mab01uk
Last post by mab01uk
Yesterday 10:15 PM
0 Replies, 172 Views
Serpentine belt tensioner
Sep 19th, 2014 01:36 PM
Last post by ExclusiveWorkshops
Yesterday 10:06 PM
1 Replies, 324 Views
Timing Chain Tensioner
Sep 27th, 2014 03:15 PM
by TonyR53
Last post by ExclusiveWorkshops
Yesterday 10:01 PM
3 Replies, 526 Views
2015 Countryman
Aug 31st, 2014 12:59 PM
by Sophia7
Last post by Jenna704
Yesterday 08:21 PM
2 Replies, 635 Views
headlight problem 😕
Aug 7th, 2014 11:30 AM
by gadger
Last post by sharpster74
Yesterday 07:53 PM
1 Replies, 415 Views
tempremental xenon headlights
Aug 29th, 2014 08:38 PM
Last post by sharpster74
Yesterday 07:45 PM
2 Replies, 579 Views
Which rear wiper
Sep 25th, 2014 07:14 PM
by moblies
Last post by Wheelnut3104
Yesterday 06:55 PM
1 Replies, 372 Views
2011 mini clubman temperture sensor
Yesterday 06:33 PM
by S17cky
Last post by S17cky
Yesterday 06:33 PM
0 Replies, 134 Views
Resonant noise - Mini One D 2006
Yesterday 02:04 PM
Last post by vlado.rekso
Yesterday 02:04 PM
0 Replies, 345 Views
2006 1.4 Mini One D Idle Knocking Noise Just purchased.
Mar 4th, 2013 08:20 PM
Last post by vlado.rekso
Yesterday 01:46 PM
1 Replies, 1,856 Views
» Premium
» Auto Insurance
Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 06:18 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2