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Vauxhall Vectra X18XE 1998 - Non start - Fixed #

Posted by Ian Waring on March 20, 2012, 11:44 pm

Year of Manufacture *: 1998
( Optional ) Engine Code or CC: X18XE

Vehicle has broken down.

Mil light failed to work prior to breakdown and continues to not work.

Fuel Pump not working and no spark at Plugs.

12v feed from ECU to Fuel Pump Relay not working with ignition on, and 12v feed from ECU to Crankshaft Sensor not working.

Have carried out Wiring checks.

Readings from Immobiliser Control Module are 'Signal transmitted and engine request not received'.

Data from ECU is 'Signal received, Immboliser active'.

With this info am I correct in assuming ECU is immobilised? (Incidentally, have spoken to ECU testing company who tell me this particular ECU is not prone to faults, but not unknown and maybe worth sending for testing).

Before I send ECU to be tested are there any other checks on Immobiliser Control Module that can be carried out?

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Mark carter <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on March 21, 2012, 8:28 pm, in reply to "Vectra 1.8, / Non Start / ECU number 90506365"
Mark Carter

HiIan,

>>> Have carried out Wiring checks. <<<

Can you tell us more?

Mark

Modern cars, Its all wizardry and witchcraft

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by lee mackintosh <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1348' width='330' height='300' border=0 style='border:none;'> on March 21, 2012, 9:42 pm, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"
Lee Mackintosh

Can't remember which way round it is but can you reset/re-program either the engine ecu or the immobiliser ecu but don't do both at the same time.

You may even need to select from immobiliser ecu engine ecu installed.

Sometimes the Vectra's lost the immobiliser coding for the engine ecu.

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 21, 2012, 10:20 pm, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"

I have autodiagnos but cannot see prog for re-coding ECUs?

Mark - Continuity checks to engine sensor wiring back to ECU.

Thanks for replies.
Cheers
Ian

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Mark carter <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 7:36 am, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"
Mark Carter

I just want to get this clear,
So you have coms with the Immo ECU and the code is ? I'm guessing something like B3045

And you have coms with the engine ECU and the code is?

Mark

Modern cars, Its all wizardry and witchcraft

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by lee hemmings <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3416' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 8:20 am, in reply to "Vectra 1.8, / Non Start / ECU number 90506365"
Lee Hemmings

Check transponder is in the key, i had something similiar a few years ago.
Customer drop the key and the top and bottom sepertated as they often do on that key, what he didet relise was that the transponder had drop out of the bottom half of the key, which i discovered upon opening the key.

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Lee Mackintosh <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1348' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 9:46 am, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"
Lee Mackintosh

doesn't the engine management light flash normally to indicatre an immobiliser issue or key fault.

Sometimes when the battery goes flat it causes the immobiliser ecu to lose its coding.

thanks
lee

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 12:49 pm, in reply to "Vectra 1.8, / Non Start / ECU number 90506365"

Engine ECU Codes:

P1690, Check Light
P0340, CMP Sensor Circuit
P1230, Power Supply Relay Secondary circit low.
P0410, Air System
P0230, Fuel Pump Primary Circuit
P1110, Intake Manifold Valve 1

Imobiliser Control Unit:

P000F, Vehicle Speed Signal Voltage Low
P0012, Engine Check Light Circuit
P0011, No engine request received

These are the only codes in the system. This is the first vehicle I have had in that has an immobilser ECU problem. Bit of a learning curve.

Any guidance very appreciated.
Cheers, Ian

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 1:00 pm, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"

Am using spare key from customer.

Immobiliser ECU indicates with ignition on: 'Immobiliser signal transmitted'.

With key off Immobilser ECU indicates:

'signal not transmitted'

Thanks anyway.

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Tony Sefton <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5581' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 9:10 pm, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"
Tony Sefton

Ian, I might be way off the mark, BUT.......

A few little things dont look right with your diagnosis. ?

Q. you say theres no 12v feed from the ecu to the relay. ??

A. The ecu does not feed the relay, The Main relay should have a permanent battery feed to the windings and contacts and the ecu earths the windings to switch the main relay on.

Have you tested the relay as if the main relay does not switch on then it will not put a feed to the fuel pump relay giving your exact problem. and the ecu cannot then send an immo signal recieved to the immo box.

Also the fault code...P1230, Power Supply Relay Secondary circuit low. sounds like faulty contacts in the main relay. ( or a blown fuse )

Thats enough rambling for now. H.T.H Tony.

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Matt Booth <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3028' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 9:43 pm, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"
Matthew Booth

I'm with Tony on this one. Doesn't sound to me like the system has been checked fully. What are you getting at pins 86 and 30 on the fuel pump and ECU relays.

If you put an earth to pin 85 on the engine ECU relay does everything kick into life? Assuming you have your feeds.

Just checking all the basics on this will logically lead you to the problem, no wizardry required. =)

Matt

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Lee Mackintosh <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1348' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 9:49 pm, in reply to "Re: Vectra 1.8, / Non Start / ECU number 90506365"
Lee Mackintosh

Can't you bridge terminals 30&87 of the main relays to see if the car will then start.

Re: Vectra 1.8, / Non Start / ECU number 90506365

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 22, 2012, 10:47 pm, in reply to "Vectra 1.8, / Non Start / ECU number 90506365"

Aah .... yes, I have misunderstood how engine relay works. My fault. Will re-check my wiring diagram tomorrow.

Cheers all!

Ian

Fixed #

Posted by Ian Waring on March 23, 2012, 10:46 pm, in reply to "Vectra 1.8, / Non Start / ECU number 90506365"
Message modified by board administrator March 24, 2012, 1:21 pm

All help has been very appreciated.

Tony's post in particular set me on the right track, as I immediately realised my error. Last night I knew the car would be up and running today - slept well!

Replaced engine relay and decided to replace pump relay as well. Customer didn't pay for my mistake .. he paid the correct price and I learnt a lot about how the system worked.

Nice to speak to you today, Mark.

Cheers All!

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