Question about 2003 Toyota Land Cruiser

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Immobiliser ecu my car wont start

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What is the check engine light error code number?

Posted on Dec 19, 2013

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I have got toyota noah which wont start. the cranking its there. battery is good. there is no powere to fuel pump. fuse all ok. even changed the engine control unit.


If the vehicle is fitted with an immobiliser that could be the problem. Have you checked for a spark?

If an immobiliser is fitted the new engine ECU will have to be coded before it will work.

A wiring diagram is almost essential to diagnosing the problem. There is likely to be a relay controlling the supply to the fuel pump but what controls the relay? If the relay is controlled by the engine ECU there will be no supply until the immobiliser is disarmed.

If the vehicle was presented to me I would check for a spark and if a spark is present I would provide a temporary supply to the fuel pump to test if the engine starts, proving the fault is not immobiliser-related but a wiring or switching problem.

Jul 18, 2016 | Toyota Cars & Trucks

1 Answer

Fob key problems


You need to have the spare reprogrammed as it has an immobiliser chip that sends a signal to the cars ecu so if the ecu doesn't recognise the chip the engine won't start.

presume

Dec 27, 2013 | 2004 Citroen Xsara 2.0

1 Answer

Car wont start


You have an immobiliser issue which unfortunately will require the assistance of a decent auto electrician. The key is not talking to the immobiliser ecu

Mar 03, 2012 | Cars & Trucks

1 Answer

I HAVE CHANGED THE IGNITION ON MY DAEWOO ESPERO CD 1998. NOW THE CAR WONT START. I SUSPECT IT IS THE IMMOBILISER THAT IS CUTTING THE ENGINE OUT. I HAVE PUT ON A UNIVERSAL IGNITION SWITCH SO THE...


Hi There.
it may be the immobiliser,,, and then it may be that you need the ignition key code and/or ECU that goes with that particular model

May 03, 2011 | 2000 Daewoo Korando

2 Answers

Bmw 523 petrol,immobiliser problem is there a way round this nightmare?,turns over wont start,its an auto cant even push out of the way,


Hi

There is one method you ca try, first ensure the car is unlocked but with the keys out of the car. then disconnect the battery for about 2hrs, overnight if possible. this should reset the car immobiliser and ECU. When putting the battery back on connect the red first then the black i that order.

If no joy get back to me I have a few oher solutions.

Regards and happy new year
Dan

Jan 01, 2011 | 2001 BMW 5 Series

1 Answer

NO GAS BEING DELIVERD


check all the fuses - attempted hotwiring will have blown a few. likely you will need to do more than plug everything back in to start this bird again - immobiliser will not let this car start, it "thinks" the car is still trying to be stolen more than likely and wont start without a reset immobiliser... i'm no expert on modern security devices tho so dont take my word for it but the dealer is probably the only way to reset it. or a good garage who know plenty about ECU's and immobilisers

Jan 16, 2010 | 2008 Chrysler Sebring Convertible

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Renualt megane (Auto) 2001 model wont start


Have you tried cleaning or replacing the flywheel rotation sensor ????

Jun 10, 2009 | 2003 Renault 181

1 Answer

Changing ecu for toyota corolla 2004 needs programming


The ecu doesnt have to be programmed for the car, it should start right up, unless its a bad ecu. Or a whole different problem. unless it has immobiliser.

Jun 20, 2008 | 2004 Toyota Corolla

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