Ecu Fuse 20 Amp

[Belle427]

Does anyone know the route this supply takes from the fuse box or what it actually feeds?
It went today while out on a run, replaced it and car was ok afterwards.
It’s the second fuse in from the left hand side

Edited by Belle427 on Sunday 3rd June 06:05

[Steve_D]

On my 97 chim second from right is fuse 20 high beam.
ECU is fuse 2 second from left and fuse 12.
Fuse 2 does ECU, MAF, injectors. Fuse 12 does ECU, pump relay coil, alarm/immobiliser.

Steve

[Belle427]

Sorry my mistake it is second from left, thanks.

[spikep]

This may help.

[Steve_D]

So none of those circuits are 'heavy current' in normal use.
A fail of the ECU or MAF is unlikely to generate a large enough short. Likewise I doubt an injector could.
So that leaves a short in the wiring which could be anywhere.
However, I have seen a short where the injector wiring for Cyl.2 wore through and shorted to the coil mounting bracket.

Steve

[Belle427]

It happened to me once about a year ago but occurred on starting so not so bad, but it’s a pita when it happens on the move.