4th Gen - The dreaded 4WS light is ON, help with code pls?

arif_manji · Post by **arif_manji** » Thu Sep 03, 2015 8:50 am

Hi chaps,

The 4WS light has appeared and I've done the paperclip test but can't work out the code as it goes so quick.

Can anyone help with this please?

I've uploaded the video, could someone check it out and confirm the code? It would be greatly appreciated.

http://vid1333.photobucket.com/albums/w ... hgkp1u.mp4

Cheers

arif_manji · Post by **arif_manji** » Thu Sep 03, 2015 10:21 am

It look like code 25 but I can't find no errors about this apart from 5th Gens? i could be wrong.

Post by **indigolemon** » Thu Sep 03, 2015 10:39 am

Ignore the first burst of flashes. The code is two long, or code 20. Try a reset (Disconnect the battery or pull the clock/radio fuse for 30 secs) and see if it comes back.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu Sep 03, 2015 10:42 am

The mega fast flashing is to show when it swaps from the main ecu to the sub ecu (and back) so ignore the fast flashes.
The only ones that matter are the 2 longer flashes. I don't have the manual to hand so can't recall if the 2 flashes mean that it's code 2 or code 20, you'll need to check the manual to be sure.

arif_manji · Post by **arif_manji** » Thu Sep 03, 2015 3:16 pm

This is the second time its happened with the same code. When I bought the car, it was ON so I reset it. Drove 200 miles (1 week) and started the car one morning, turned the steering and it came ON. I reset it again and have been driving it to work and back, round trip each time is about 12 miles and after two weeks, it came ON when I started the car to leave work. Soon as I turned it, I saw it come on. Its always after 200-210 miles range. Weird inst it?

Code 20 is angle sensor, is that behind the steering wheel or the one on the steering rack?

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Thu Sep 03, 2015 3:28 pm

If it is the steering angle sensor, the tracking on the wheels may be adjusted wrong, sending it out on a pot hole or kerb. A reset will remove the light / code. But if it re-occurs get your tracking checked out. After that it could be the sensor is on the way out. Not too bad to replace as long as you can remove the steering wheel nut. I probably have a spare lying around in the garage if you need one.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu Sep 03, 2015 3:49 pm

arif_manji wrote:angle sensor, is that behind the steering wheel or the one on the steering rack?

There are 3 angle sensors - main, sub, rear main (see page 17-30 of the service manual)

Code 20 is identified as the main steering angle sensor, which is the one behind the steering wheel, but could also be related to the sub sensor, wiring or 4ws control unit (see page 17-39 of the service manual).

Fault finding guide for code 20 is on page 17-55 onwards.

Page 17-144 may well be useful. Vtecmec has successfully used this procedure to resolve world financial crisis, international terrorist threats and JRSC installations*

*not really, but he has used it to fix baffling 4ws faults related to steering sensors before now

Post by **Vtecmec** » Thu Sep 03, 2015 3:49 pm

There are checks in the manual to check the alignment of the 4WS sensors, adjustment is quite straight forward. I had a code 20 and fixed it by correcting the main steering angle sensor.

If all your sensors are slightly out, then you will probably occasionally get a 'perfect storm' sending the 4WS into a wobbly.

EDIT: Beaten by the Wurly.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu Sep 03, 2015 3:58 pm

The difference is though... You can actually be bothered to do that stuff whereas I can just talk about it!

Ps - I have been cooking up a great little 'fun' surprise for you at JAE...

Post by **Vtecmec** » Thu Sep 03, 2015 3:59 pm