9 replies to this topic

[sworks]

Could someone point me in the right direction for the wire I need to splice into to connect a switch for the relay on the water pump for the charge cooler



Thanks
Chris

[fezzasus]

white/purple wire.

[sworks]

Cheers tom. Also, wiring in tmap, obd manual says pin 1, 2 and 3. My map sensor has a, b, c. Is it as obvious as I think it is a=1 and so on? The IAT has no markings on that I can see. How would I distinguish pin 1 from 2 Thanks

[fezzasus]

I think your plug for the TMAP should have numbers, rather than the sensor

 

in terms of wiring the IAT leads into the TMAP, you need to check the wires for a common ground (use a multi meter) on the IAT and MAP, they both combine into pin 1, therefore process of elimination leaves the remaining IAT lead as pin 2

[sworks]

Thanks. No ecu or battery in the car at the moment, so guess that will have to wait. Thanks

[fezzasus]

You don't need them in to check it, power doesn't run through the ground, just set the multi meter to a resistance measurement (1k for example) and test for a low resistance between the two wires, that means they're connected and therefore share the same ground.

[sworks]

Ah ok, cheers mate. I sometimes wonder that if I had half a brain I'd be dangerous!!

[Exmantaa]

The sensor wires rub through the ecu connector to ground, so you need to connect the ecu to check this! a,b,c = 1,2,3...

[Exmantaa]

Water pump > use pin 8; fuel pump steering wire. White/purple on most. (That thick wire is pin 1, main 12v feed to ecu, so count from there)

[sworks]

Water pump > use pin 8; fuel pump steering wire. White/purple on most. (That thick wire is pin 1, main 12v feed to ecu, so count from there)

Thank you