Having checked the fuse box diagrams, I can't find anything that refers to an injector relay. The diagrams state that the brown relay in the engine bay relay box is for the headlight washers as evocarlos advised.
its one of the purple relays ""efi relay"" powers all the parts on the engine injectors,fuel vent,egr,lambda heaters the coil pack is fed from the ignition supply the other purple relay is the fuel pump relay
Re-checked to see if the injectors were working with someone cranking the engine for me and there was definitely nothing coming from the injectors.
Sprayed some foam cleaner in through the throttle body whilst cranking and it didn't start. I had previously sprayed some degreaser which sprayed a fine mist rather than a liquid jet through the throttle body it ran very briefly. Didn't know whether that combusted under compression alone.
Based on this, what is the best way to proceed from here?
Cheers for the link mate, I hadn't come across it.
The engine started on the cars existing injector harness and then stalled and wouldn't restart. After testing all the sensors etc. I decided to change the injector harness but I got exactly the same fault code with the new harness.
It's worth checking the two purple relays again in the black rectangular fuse/relay box located on top of the ABS unit.
Ensure the ignition is switched off and remove them one at a time. Clean the terminals then smear some vaseline on them and replace. If either of the relays look slightly brown or are 'bulging' then renew them.
So I’ve checked the purple relays again:
Checked with both relays fitted and the fuel pump starts and there is plenty of pressure at the rail but the car did not start.
I removed the fuel pump relay, turned the ignition on and the fuel pump did not start and the car did not start.
I bridged the fuel pump relay terminals (plugs 86 & 87 on the relay) and the fuel pump started but the car did not start.
Carried out the same procedure for the other relay and fuel pump started during each test, the car turned over on each test but the car did not start.
I checked the fault codes during each part of the test and here are the screens:
Ignition on and fault code refresh
Refresh list after cranking
Turn ignition off and back on then refresh list
Fault codes were the same regardless of the status of the relays.
Based on what IDI AMIN sent through I checked the injector harness connectors:
The power supply side of the grey connector has 6off wires. 1off red and black, 1off red and cream, 1off blue and green, 1off blue, 1off brown and 1off brown and green.
The cars original injector harness (which the car started with and ran for 20 mins) has 4off wires going into the grey connector. 1off red and black, 1off red and cream, 1off blue and green and 1off blue
The injector harness that is now installed has 3off wires going into the grey connector. 1off blue and green, 1off red and blue and 1off black
So it’s obvious that I the injector harness that I have fitted is not the right one so I will remove it and reinstall the original harness
Just rechecked the voltages:
Between one of the injector contacts and the positive battery terminal I get 6V and between the negative battery terminal I get 0V.
Between the other injector contact and the positive battery terminal I get 12V and between the negative battery terminal I get 0.04V