General: 850: - fault code

jack taylor · Jun 12th, 2009, 17:25

Forgive my ignorance please but will some kind member help me. I am having cut out problems with my 850. I have seen on the forum reference to locating a fault code for which diagnostic equipment is required and apparently plugs into the engines "brain".To diagnose my cars problem do I need to book my car into one of our wonderful Spanish main dealers!!! or can I buy the equipement and if so, is it very expensive.Any advice will be much appreciated. Thanks..Jack

Chris_Rogers · Jun 12th, 2009, 18:03

What year and model do you have?

jack taylor · Jun 12th, 2009, 19:25

Quote:

Originally Posted by Chris_Rogers

What year and model do you have?

Hi Chris. I have a 1996 850 GLT, 2.4 20v, auto.

Chris_Rogers · Jun 12th, 2009, 19:42

Your car could have one of two engine management systems, the method of reading fault codes is different for each one.

If you have a look at the first photo in this link:

http://volvospeed.com/Repair/sbelt70.php

You will see a black box on the bottom left of the picture with a yellow sticker on it.

If you remove the box lid you will see some ECU's in there.

As your car is automatic there will be one ECU for the gearbox, there may be one or two further ECU's for the engine management system.

If you post back with the number of ECU's you find I'll be able to help further.

jack taylor · Jun 13th, 2009, 14:17

Hi Chris, I appreciate your time and trouble. I shall have a look and come back to you. Meanwhile what is an ECU. Thanks..Jack.

Chris_Rogers · Jun 13th, 2009, 18:22

Electronic Control Module (ECU)

Each will be in an aluminium box which slides into the black box I refered to earlier, it will be obvious how many there are once you have the lid off.

Jod T5 · Jun 14th, 2009, 10:42

Fingers crossed for 3...
2 means you will need to buy a code reader....

Cheers
Jod

jack taylor · Jun 15th, 2009, 21:03

Quote:

Originally Posted by Chris_Rogers

Electronic Control Module (ECU)

Each will be in an aluminium box which slides into the black box I refered to earlier, it will be obvious how many there are once you have the lid off.

Hi Chris, I found the box which has a metal strap round it. There is a diagram on top showing three pulleys with a belt round them. The strap retaining bolt won`t budge. A friend has recomended an electrical diagnostic guy who is very reasonable. I think I would rather pay him than break something myself. Thank you very much for your kind offer of help.Jack.

Chris_Rogers · Jun 15th, 2009, 21:12

Up to you, it wont matter if you do break the bolt, the strap is no use it can be thrown away.

Come back if you find you find your contact can't read codes form the car.

Jod T5 · Jun 16th, 2009, 10:13

Chris,
Is it not a option the OP could try the flashcode reader incase he has the Jetronic, or is this likely to irritate a 4.4 ecu?, if infact this is installed...Is the engine type number not going to help?
Cheers
Jod

Jun 12th, 2009, 17:25	#1
jack taylor Master Member Last Online: May 15th, 2022 15:53 Join Date: Jan 2008 Location: Torrenueva, Costa del Sol	fault code Forgive my ignorance please but will some kind member help me. I am having cut out problems with my 850. I have seen on the forum reference to locating a fault code for which diagnostic equipment is required and apparently plugs into the engines "brain".To diagnose my cars problem do I need to book my car into one of our wonderful Spanish main dealers!!! or can I buy the equipement and if so, is it very expensive.Any advice will be much appreciated. Thanks..Jack

Jun 14th, 2009, 10:42	#7
Jod T5 Phoenix from the ashes Last Online: Apr 24th, 2024 01:05 Join Date: Jan 2006 Location: Finchingfield	Fingers crossed for 3... 2 means you will need to buy a code reader.... Cheers Jod __________________ Dum Spiro Spero VOC 20419

Jun 16th, 2009, 10:13	#10
Jod T5 Phoenix from the ashes Last Online: Apr 24th, 2024 01:05 Join Date: Jan 2006 Location: Finchingfield	Chris, Is it not a option the OP could try the flashcode reader incase he has the Jetronic, or is this likely to irritate a 4.4 ecu?, if infact this is installed...Is the engine type number not going to help? Cheers Jod __________________ Dum Spiro Spero VOC 20419

Jun 12th, 2009, 18:03	#2
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	What year and model do you have?

Jun 12th, 2009, 19:42	#4
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Your car could have one of two engine management systems, the method of reading fault codes is different for each one. If you have a look at the first photo in this link: http://volvospeed.com/Repair/sbelt70.php You will see a black box on the bottom left of the picture with a yellow sticker on it. If you remove the box lid you will see some ECU's in there. As your car is automatic there will be one ECU for the gearbox, there may be one or two further ECU's for the engine management system. If you post back with the number of ECU's you find I'll be able to help further.

Jun 13th, 2009, 14:17	#5
jack taylor Master Member Last Online: May 15th, 2022 15:53 Join Date: Jan 2008 Location: Torrenueva, Costa del Sol	Hi Chris, I appreciate your time and trouble. I shall have a look and come back to you. Meanwhile what is an ECU. Thanks..Jack.

Jun 13th, 2009, 18:22	#6
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Electronic Control Module (ECU) Each will be in an aluminium box which slides into the black box I refered to earlier, it will be obvious how many there are once you have the lid off.

Jun 15th, 2009, 21:12	#9
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Up to you, it wont matter if you do break the bolt, the strap is no use it can be thrown away. Come back if you find you find your contact can't read codes form the car.

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