How to Remove ECU from Car
#21
07-25-2012, 06:36 AM
Hi all,
OK, at the OBD2 socket in the car at pins 6+14 it did measure 60 ohms, on the ECU at pins 123+124 it did measure 120 ohms.
I want to narrow the fault area down as much as possible before I jump in and buy a replacement ECU.
New at present around £750.00 + vat plus config.
I'm going to try and do some continuity test around the unit to see for something obvious.
regards.
OK, at the OBD2 socket in the car at pins 6+14 it did measure 60 ohms, on the ECU at pins 123+124 it did measure 120 ohms.
I want to narrow the fault area down as much as possible before I jump in and buy a replacement ECU.
New at present around £750.00 + vat plus config.
I'm going to try and do some continuity test around the unit to see for something obvious.
regards.
#22
07-25-2012, 07:28 AM
#23
07-26-2012, 06:02 AM
#24
07-26-2012, 12:27 PM
Hi,
Checked the grounds pins, 4,5,17,18,29,30,54,81,82,91,111,116 all OK,
Checked the power pins 7,10,22, pins 23,24 the ECM relay, did not have power, I assume the relay needs to be operating?
It looks like I've exhausted all areas to look into, and points to a faulty ECU unit.
Eurojag have been fantastic, they put me in contact with a local guy who has the Jaguar software to configure a replacement ECU.
Going to bite the bullet and send it to the garage.
I'll let you know what he finds.
Thanks to everyone for their help especially 912guy, what a great forum.
Checked the grounds pins, 4,5,17,18,29,30,54,81,82,91,111,116 all OK,
Checked the power pins 7,10,22, pins 23,24 the ECM relay, did not have power, I assume the relay needs to be operating?
It looks like I've exhausted all areas to look into, and points to a faulty ECU unit.
Eurojag have been fantastic, they put me in contact with a local guy who has the Jaguar software to configure a replacement ECU.
Going to bite the bullet and send it to the garage.
I'll let you know what he finds.
Thanks to everyone for their help especially 912guy, what a great forum.
#25
07-27-2012, 06:08 AM
Hi,
Checked the grounds pins, 4,5,17,18,29,30,54,81,82,91,111,116 all OK,
Checked the power pins 7,10,22, pins 23,24 the ECM relay, did not have power, I assume the relay needs to be operating?
It looks like I've exhausted all areas to look into, and points to a faulty ECU unit.
Eurojag have been fantastic, they put me in contact with a local guy who has the Jaguar software to configure a replacement ECU.
Going to bite the bullet and send it to the garage.
I'll let you know what he finds.
Thanks to everyone for their help especially 912guy, what a great forum.
Checked the grounds pins, 4,5,17,18,29,30,54,81,82,91,111,116 all OK,
Checked the power pins 7,10,22, pins 23,24 the ECM relay, did not have power, I assume the relay needs to be operating?
It looks like I've exhausted all areas to look into, and points to a faulty ECU unit.
Eurojag have been fantastic, they put me in contact with a local guy who has the Jaguar software to configure a replacement ECU.
Going to bite the bullet and send it to the garage.
I'll let you know what he finds.
Thanks to everyone for their help especially 912guy, what a great forum.
#26
08-06-2012, 12:56 PM
#28
11-17-2018, 07:10 PM
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you will need a tamper proof hex head drive...plus a 10mm socket,plus a 3/8 adaptor at least 10 inches...you start by removing the cowl on the front passnger side.It is the pollen filter housing. which is held by 4 10mm bolts.Once you remove them disconnect the washer lines be careful not to damage them,once the bolts are removed just lift the upper cowl rim up and the pollen housing,and you will see the ecu harness.It will be held to one 8 or 10mm bolt on each side,but the center harness bolt will be a tamper proof hex head.I think the size is 30 or 27.Once you remove these three then the harness will come out exposing the pins etc.Then you go inside to the passenger side kick panel and remove the inside bolts...Let me know..and also make sure you disconnect the neg term from batterry...happy wrenching.
#29
03-12-2020, 08:35 AM
#30
04-19-2021, 08:52 AM
Member
Unplug negative terminal on batteryOpen hood (bonnet)Pop off plastic fasteners holding the leaf guard/wind screenRemove cabin air filterRemove 4x 10 mm nuts for cabin air inletRemove connectors holding ECURemove 2x 10 mm nuts for ECU
~~underneath glovebox~~
Remove fabric cover beneath gloveboxECU now visible. Remove T27 bolt securing back of ECUECU now free. Wiggle out of the car (careful of nearby harnesses/cabin fuse box/footwell lighting)
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