Originally Posted by
RS_Andy
Just out of Curiosity what are the other fuses for?
The Green relay with a 20 Amp fuse
The Yellow relay with a 20 Amp fuse
The Yellow relay with a 15 Amp fuse
and the purple with a 30 Amp fuse is for the breaking system
Thank you all again
No problem
The 20A fuse and green relay is the power for the rest of the ABS system.
The 20A fuse and yellow relay is for the fuel pump, which also powers the idle speed control valve and amal valve on 2wd Cossies, but only drives the fuel pump and amal valve on 4x4s.
The other yellow one's escaped me - might be the ECU, but I think they're black. My current ECU relay's red because it popped and that's all I had spare. I'll have a poke around behind my glovebox later.
My favourite method of finding out what they're for is unplugging them to see what stops working.
If the yellow light goes out initially, but them comes back on as soon as you get over 15kph, you have a dodgy sensor or toning ring. The sensors make a small AC voltage (about 2V) when the wheels turn as the teeth of the toning ring passes in front of the sensors.
The ABS ECU can't detect a running wheel sensor fault while you're stationary, all it can detect is whether all the sensors are connected, which is why the yellow light goes out. You can test for this too if you have a multimeter and a spare body to help.
