Obd 2 connects to phone but not ecu

[JAMZILLA321]

My phone connects to the obd scanner just fine but the obd scanner doesn’t appear to be connecting to the ecu - I have an august 1999 bmw z3 1.9i from UK

 

[JAMZILLA321]

Any solutions?

 

[SV8Predator]

First, is the "app" you are using on your phone actually compatible with the Z3?
Secondly is it plugged in correctly to the OBD port?
The under-dash OBD port will only give you engine (for emission purposes) information. For all the other systems, you will need to plug into the under-bonnet port. (With a special adaptor). And provided your app is compatible with the Z3.

 

[NZ00Z3]

The Engine DME on all Z3's are OBD2 compliant.

Make sure that the top is on the 20 pin (pacman) diagnostic port under the bonnet/hood. If the top is not on, then the OBD2 port will not connect.

 

[JAMZILLA321]

First, is the "app" you are using on your phone actually compatible with the Z3?
Secondly is it plugged in correctly to the OBD port?
The under-dash OBD port will only give you engine (for emission purposes) information. For all the other systems, you will need to plug into the under-bonnet port. (With a special adaptor). And provided your app is compatible with the Z3.

I used the one under the steering wheel and it said cannot connect to ecu

 

[t-tony]

I used the one under the steering wheel and it said cannot connect to ecu

Was the top fitted on the under bonnet connector?

Tony.

 

[JAMZILLA321]

The top?

Was the top fitted on the under bonnet connector?

Tony.

 

[Eddie Zedder]

 

[JAMZILLA321]

Yeah mines on