P38A EAS switch light

hi an merry chrisms

I have a odd problem with my eas switch in the dash..

when I change right height the car dos it as it shout but the light doesn't change..

any idea's ?
I am thinking faulty switch

If you can crack the switch open could be a cracked solder joint?
Weird that it functions but no light change... Argh it's a P38 hissing fit...

I run it over tomorrow..
Yes it is odd
If I pull the plok out an back it will change one light down

Just a thought... Have you checked the harness plug behind the passenger kick panel under the dash?
I wonder if it could be a communication issue caused by the plugs corroding due to a leak from the pollen filter housing directly above!
Getting complicated now....

No that I haven't check .
That I will do leader today
Is it on to right hand site ore the left

Are you LHD or rhd?

sarstad said:

No that I haven't check .
That I will do leader today
Is it on to right hand site ore the left

Click to expand...

No L/H side at base of A post behind trim. Do NOT play with height switch it is full of electronics and seriously expensive to replace with a new one. If that is duff second hand is the only real option.

wammers said:

No L/H side at base of A post behind trim. Do NOT play with height switch it is full of electronics and seriously expensive to replace with a new one. If that is duff second hand is the only real option.

Click to expand...

Is it not serviceable at all wammers?
Good morning sir!

Mark Piercy said:

Is it not serviceable at all wammers?
Good morning sir!

Click to expand...

Not by me it isn't. Early one to 1999 AMR3713 superseded by AMR5823 is £365.69. Later one 1999 and on YUF101930 is £394.34. So i think there maybe more than a momentary switch and a few bulbs in it. And a good morning to you my friend.

Holy pot of gold batman!!!
I take it the switch being the command and the lights indicate a return signal from the height sensors or suspension ECU?

Mark Piercy said:

Holy pot of gold batman!!!
I take it the switch being the command and the lights indicate a return signal from the height sensors or suspension ECU?

Click to expand...

They give a solid at lamp and a flashing going to lamp. That must be signalled by the ECU and switched by it. As there is only the ECU that knows when a selected height has been achieved. So the interface selector switch to ECU is a good shout and that is the plug at base of L/H A post.

Mark Piercy said:

Are you LHD or rhd?

Click to expand...

LHD

sarstad said:

LHD

Click to expand...

Doesn't matter it is still L/H side of car at base of A post.

wammers said:

They give a solid at lamp and a flashing going to lamp. That must be signalled by the ECU and switched by it. As there is only the ECU that knows when a selected height has been achieved. So the interface selector switch to ECU is a good shout and that is the plug at base of L/H A post.

Click to expand...

is that ECU the BCEM ot the EAS ECU ..

the car has bil sitting and nor rund for about 4 years

when I get home I will check the pluk in the foot well

EAS ECU under passenger seat R/H drive Drivers seat L/H drive.

okay
have you ever tried to measure on the weir there goes into the switch

sarstad said:

okay
have you ever tried to measure on the weir there goes into the switch

Click to expand...

No look at the interface at base of A post as advised.

So just finish with it and found the fault

The switch have a clock an a data wire that it use to communicate with the ecu .
The to wire have are split right under the connector in the foot weld under the pluck ..
They were coroadet and need a fix
It is all great again ..
Thanks for the help guys

Well done sir! Keep bus driving