Wiring diagram for 172 engine loom

[FlansS14]

Does anyone have the wiring diagrams for the 172 engine loom?

Cheers

Flan

 

[FlansS14]

or a haynes manual

 

[172lover]

haynes never brought out a manual for the sports

 

[marinemackay2003]

only real way is to get hold of a copy of auto data

it has all the wire diagrams on it iirc cant remember last time i looked at one

it aint cheap though

 

[FlansS14]

Nice one...

hmm... i can trace them back... just a bit of a pain, Only need colours for water temp, tacho, fuel pump and charge light.

anyone know what all the relays are... the previous chap has litterly cut the old ones out. not cool.

thanks guys

 

[f0xy]

Engine bay relays on a 172 (Ph1) are...

1 x Yellow One - Cooling Fan
3 x Small Black Ones - Fuel Pump, ECU Power and Injectors/Coilpack

...If I remember correctly!

 

[FlansS14]

cheers foxy... never one to disapoint.

i take it all the relays in the black box are engine relays... ie no wiper,lights,horn rubbish.

Any idea on tach.. thats the tricky one.

Cheers Dude

 

[f0xy]

Tacho usually comes from Pin 70 on the 172 Ph1 ECU, directly to the clocks - might be different on a Ph2 and run through the CANBUS system...

Nope all wiper/lights/horn stuff runs through the UCH (white unit with relays under glovebox)

 

[FlansS14]

Nice one...just realised tacho comes from the emerald box anyway.

Cheers Dude