Can I get the fuel injector/fuel relay diagram and ECU pinout?

Hello,

2005 was a change over year for the Zafira model, so you could have either a Zafira A or B
The Zafira A was fitted with the Z18XE engine.
The injector and fuel pump relay diagram is in image 1 below.
K18 is the engine control unit relay.
K16 is the fuel pump and injector relay.

At ECM connector X57 is 64 pin black/blue, X58 is 64 pin black.
Connector X58 is located at the rear of the ECM, closest to firewall.

Image 2 shows the current path out from relay K18.

Power supply to ECM is on connector X57.
Pin32, red wire constant voltage from fuse F6(20A).
Pin 64, black wire ignition voltage from fuse F3.46(15A).

See image 3 below.

The Zafira B was fitted with the Z18XER engine.

Cheers, Boris

Hello,

So, your vehicle is a Zafira A?

Terminal 85 at the fuel pump relay is a switched ground from the ECM pin 19, brown/green wire.

Check if this ground is switched if you switch the ignition on this ground should be activated for a few seconds to prime the fuel system.

If you bridge the relay, terminals 30+87, does the vehicle then start?

Also use a diagnostic scanner and check if you have communication with the ECM.
Check for possible fault codes

How to:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Cheers, Boris

Hello,

A lack of any fault codes makes it hard to pinpoint where the fault is incorrect.
I would have expected to see some kind of transponder or environment identifier codes.

Have you tried using the 2nd key to see if the vehicle will then start?
Next try to program the immobilizer and ECM using Opcom.
For this you will require the 4-digit security access code.
This you can find on the Carpass or some software programs/scan tools are able to extract this from the vehicle.

A video on immobilizer programming:
https://youtu.be/cyUmZenl8pg

A guide, for Astra H but it will be very similar to your vehicle:
http://blog.eobdtool.co.uk/opcom-op-com-reset-and-reprogram-ecu-guide-for-vauxhall-astra-h/

Cheers, Boris