Astra J Problem

[Manta1600]

Astra J 2010 1.6 petrol automatic - AKL - added key OK but engine wont crank (central lock working from remote)

the car was a long time with flat battery

Diagnostic can't connect to ECU - error U0100 - ECU communication faulty

Maybe ECU is falty maybe wirings - If I put ECU from other car without immo off - Can I connect diagnostic to ECU to check that wirings are OK?

[gabrilupo]

Yes, u can for sure but wont crank anyway

[Manta1600]

Yes, u can for sure but wont crank anyway

Thanks

If the problem is ECU which oder parts must swap

- Dash
- BCM
- ???

[keygargoil1]

have you done it by obd and have you cleared the faults from the restraints and column unit

[Manta1600]

I erased all possible error codes - with autocom and opcom


U0100 is permanent


I Will try with ECU from other just to check is it wires problem or ECU problem

[Manta1600]

Today I found out why I can't see the Engine ECU


It's missing (stolen) the Automatic Gearbox ECU and this interrupts CAN connection to the Engine ECU


I think that if I connect CAN wires I will have connection with the ECU and the engine will work

Tomorrow I will try

[Manta1600]

Today I connected the CAN line and was able to conect to the engine ECU

IMG_20190630_170822.jpg

after that engine still doesn't crank because there isn't signal for parking position from gearbox ECU

then I connected the starter manually with wire to +12 on the battery and the engine sterted from first time

IMG_20190630_172255.jpg

Now must find ECU for the gearbox