Originally Posted by
tabetha
From memory there are at least 3 relays there plus 1 relay holder without relay, this is a purple relay holder for the air con where fitted, even where air con is not fitted the relay holder will be there, there is a(black ?) relay with a 30amp green fuse next to it for the abs.
There are then 2 yellow relays, one is the main power relay, which is triggered by the ignition on terminal 86, this also goes to ECU terminal number 17, as well as TPS, ISCV, CANISTER PURGE(cat models) and INJECTORS, the other yellow relay(fuel pump relay) where it enters on terminal 86, the fuel pump relay(which can be identified by having a thick black/red wire = fuel pump output) also feeds the AMAL and FUEL PUMP, it does this when also triggered by terminal 28 from the ECU(in addition to the feed at terminal 86 from the main feed relay).
tabetha
This isn't correct the ECU relay powers the ECU (Pin 20) and the fuel injectors, on 2WD the Fuel pump relay powers the ISCV, Amal valve and the Fuel pump.
Also bridging the relays as you say will power the ECU and fuel pump, but there is still one vital part that won't have power (Not going to mention it on a public forum) thus the engine won't run, so not that easy to steal!
The 12V permanent feed is correct to the injectors.
Pin 29 is the CTS so it isn't this! Pin 28 is above pin 10 and this is the fuel pump relay trigger, if this is earthed then the fuel pump will permanently run by means other than the ECU!. This should be done by the ECU, if it's not then it's not getting the correct input it needs to do so you have spark so that shows CPS to be working th. It should prime when the ignition is switched on?
Martin