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[DrAndyB]

OK.

Got the ABS plug off (moving Power Steering Reservoir helped 

Results so far are:

• ABS to Cruise - OK 

  This was from one the small pins in the middle of the 3 rows near the bottom of the plug

• ABS to ECU - No Connection
• ECU to Top plug by Battery - OK 

I have the inside kick panel off, but which is the pin to check   I assume that one of them is the one from the Engine Top plug by battery, with outgoing ones at the base of the plug where it fits into to the ABS, Radio, Cruise etc.

[Doctor Gollum]

Haynes is your friend there should only be one BlueRed wire from the ABS to the plug into the car. One goes to the dash loom, tother from the dash loom to the nearside... (be a similar pair in drivers footwell). Once in the dash loom, ie just after the plug, it spurs off to the various components. The cruise ecu being furthest away and after the speedo.

Abs to ecu is no surprise if you have not reconnected the round plug...

That you have continuity to the cruise switch suggests that the wiring is ok. To confirm before trying to decipher those plugs, the sunroof motor plug has a speed input as well.

[DrAndyB]

Haynes is your friend there should only be one BlueRed wire from the ABS to the plug into the car. One goes to the dash loom, tother from the dash loom to the nearside... (be a similar pair in drivers footwell). Once in the dash loom, ie just after the plug, it spurs off to the various components. The cruise ecu being furthest away and after the speedo.

Abs to ecu is no surprise if you have not reconnected the round plug...

That you have continuity to the cruise switch suggests that the wiring is ok. To confirm before trying to decipher those plugs, the sunroof motor plug has a speed input as well.

OK so further update:

• ABS to Plug X1 Footwell (Left hand plug) - OK
• Corresponding Pin in X1 Plug Base (assumed to goto all places as in Haynes Track 1429 ) to Cruise - OK
• Corresponding Pin in X1 Plug Base to Radio - OK

I was going to check Pin in X1 Base to Instrument cluster (looking to pop speedo out  but I fear this would be OK ?) - And not sure how to access the Sunroof wires 

I see on Haynes that X1 Plug to ECU has "IMO" in line so I guess that is why no continuity untill car running.  Not sure where K118 (Immobiliser control unit)  is located ?

Thoughts ?

[Doctor Gollum]

Ah, ok, my bad... Presumed the immobiliser feed was separate.

Pm incoming

[DrAndyB]

OK so after several hours, I believe that the wiring is not a problem.  Conclusion arrived at because:

• Engine ECU is connected to the bits it needs to at the plugs is should be
• ABS ECU connected to the bits is should be (Speedo Pin 23, Multi Function Display pin 12, Radio etc
• Immobiliser connected either end to ABS ECU Engine ECU
• Connection from plug in passenger footwell to ABS ECU
• Connection from plug in passenger footwell to Radio / Cruise etc

Physical ABS and Traction Control work and there are NO warning lights on the dash, other than Flicker of TC light as normal if I try to leave 2 more black lines out the Garage as I try Launch control 

Conclusion therefore is the ABS ECU is, well, not quite all there but is there !  A strange and unusual fault I am told.

Next steps are:

• Put car back together so mobile again  All done now and she runs as before, but no speedo and speed functions as before.
• Somehow get a picture of the bottom of the ABS ECU - Easier said than done - a small enoscope maybe the key - Been meaning to get one 
• Scour around for New or known good ABS ECU of that model (for a 2.5 V6 manual - Mini Facelift - Manufacture Year 2000 (I found a GM Sticker saying June 1999 on the ECU loom in the Triangular fuse box 

Wish me luck, and any advice or assistance most welcome 

And a big thanks to Doctor Gollum - Legend.

Andy.

[annihilator]

got one here,abs hydraulic unit ident DX
Bosch code as in pic. 0273004206



John 

[DrAndyB]

PM Incoming annihilator 

[cam.in.head]

There was one on eBay a short while ago with the correct numbers. I presume you will only be changing the Ecu unit rather than the whole abs block.being a 2.5 manual means they seem to be rarer than other models.i was looking for one just before last Christmas for a 2.5 auto and after scouring the country and ringing around eventually found one from a well known omega breaker specialist in Nottingham (omegas52 I believe).this was from a 3.0 auto (same unit as 2.5)and luckily turned out to be a rebuilt unit.the year 2000 and thereabouts seem to be the troublesome ones and if you can put up with no abs or to functions for a bit it's well worth sending your unit to bba for repair or even finding a second unit and sending that one for refurb.

[Doctor Gollum]

You're welcome 

Always a puzzle trying to solve things remotely, but nowt like a challenge

The two letter Ident code should be visible without removing too much. Suspect manual 2.5 and 3.0 will be a straight swap if the Ident matches 

[terry paget]

OK so after several hours, I believe that the wiring is not a problem.  Conclusion arrived at because:

• Engine ECU is connected to the bits it needs to at the plugs is should be
• ABS ECU connected to the bits is should be (Speedo Pin 23, Multi Function Display pin 12, Radio etc
• Immobiliser connected either end to ABS ECU Engine ECU
• Connection from plug in passenger footwell to ABS ECU
• Connection from plug in passenger footwell to Radio / Cruise etc

Physical ABS and Traction Control work and there are NO warning lights on the dash, other than Flicker of TC light as normal if I try to leave 2 more black lines out the Garage as I try Launch control 

Conclusion therefore is the ABS ECU is, well, not quite all there but is there !  A strange and unusual fault I am told.

Next steps are:

• Put car back together so mobile again  All done now and she runs as before, but no speedo and speed functions as before.
• Somehow get a picture of the bottom of the ABS ECU - Easier said than done - a small enoscope maybe the key - Been meaning to get one 
• Scour around for New or known good ABS ECU of that model (for a 2.5 V6 manual - Mini Facelift - Manufacture Year 2000 (I found a GM Sticker saying June 1999 on the ECU loom in the Triangular fuse box 

Wish me luck, and any advice or assistance most welcome 

And a big thanks to Doctor Gollum - Legend.

Andy.

I imagine you have already moved the brake fluid reservoir out of the way.
Next move is to release the brake pipes from the bulkhead by removing the clamp - 1 nut.
Next slacken the nut on outside of the ABS unit. Its screw sits in a slot, so no need to remove nut.
Remove nut on inside of ABS unit completely; bend back heat shield to release screw. Now ABS unit can be raised. Grasp firmly and heave upwards. The brake pipes will bend sufficiently to allow you to raise the ECU end high enough to reveal the screws attaching it to the ABS unit body.
Remove the screws, unplug the lead at the base, and remove the ABS ECU.
Replacement is the reverse of removal. You have already unplugged the main connector.

I should have a spare ABS ECU from a 2000 2.5 petrol manual CDX. I will check in the morning.

[Jimbob]

If it helps, ABS Ecu's are adjustable for engine size and gearbox type using tech 2.

[terry paget]

got one here,abs hydraulic unit ident DX
Bosch code as in pic. 0273004206



John 

Looks right to me. I also have a 0 273 004 206, and a 0 273 004 205. It may be that a Tech2 could switch the ECU from auto to manual. Mine were all from manuals, because that is all I have ever owned.

[DrAndyB]

OK so after several hours, I believe that the wiring is not a problem.  Conclusion arrived at because:

• Engine ECU is connected to the bits it needs to at the plugs is should be
• ABS ECU connected to the bits is should be (Speedo Pin 23, Multi Function Display pin 12, Radio etc
• Immobiliser connected either end to ABS ECU Engine ECU
• Connection from plug in passenger footwell to ABS ECU
• Connection from plug in passenger footwell to Radio / Cruise etc

Physical ABS and Traction Control work and there are NO warning lights on the dash, other than Flicker of TC light as normal if I try to leave 2 more black lines out the Garage as I try Launch control 

Conclusion therefore is the ABS ECU is, well, not quite all there but is there !  A strange and unusual fault I am told.

Next steps are:

• Put car back together so mobile again  All done now and she runs as before, but no speedo and speed functions as before.
• Somehow get a picture of the bottom of the ABS ECU - Easier said than done - a small enoscope maybe the key - Been meaning to get one 
• Scour around for New or known good ABS ECU of that model (for a 2.5 V6 manual - Mini Facelift - Manufacture Year 2000 (I found a GM Sticker saying June 1999 on the ECU loom in the Triangular fuse box 

Wish me luck, and any advice or assistance most welcome 

And a big thanks to Doctor Gollum - Legend.

Andy.

I imagine you have already moved the brake fluid reservoir out of the way.
Next move is to release the brake pipes from the bulkhead by removing the clamp - 1 nut.
Next slacken the nut on outside of the ABS unit. Its screw sits in a slot, so no need to remove nut.
Remove nut on inside of ABS unit completely; bend back heat shield to release screw. Now ABS unit can be raised. Grasp firmly and heave upwards. The brake pipes will bend sufficiently to allow you to raise the ECU end high enough to reveal the screws attaching it to the ABS unit body.
Remove the screws, unplug the lead at the base, and remove the ABS ECU.
Replacement is the reverse of removal. You have already unplugged the main connector.

I should have a spare ABS ECU from a 2000 2.5 petrol manual CDX. I will check in the morning.

PM incoming your way Terry 

[TheBoy]

It'll likely be a DX, but unless from same engine/gearbox, may need tech2 to reprogram it so it does match engine/gearbox combo.

[TheBoy]

Actually, is it worth a visit to Jimbob to get some live data off it before condemming ABS ECU?