View Full Version : DTA S40 Fuel pump realy
K24_STE
23-10-12, 11:58 AM
Right I have bought a new DTA S40 Loom for a C20let, But the fuel pump relay only has 2 wires going to the plug. Any of you lot have an idea on how to wire this up? starting to struggle with this.
Thanks in advance.
K24_STE
Who made the harness? is is a DTA part or someone elses?
K24_STE
23-10-12, 03:58 PM
The harness was made by Harnessing solutions.
Looking at the DTA pin outs, one wire will be 12V (either all the time or switched on with ignition) and the other will 'ground' when the ECU wants the fuel pump on.
For a relay that means connecting to pins 85 and 86 (either way round) and then connect pin 30 to 12V and pin 87 to the fuel pump (and then the other fuel pump terminal to ground/chassis).
K24_STE
23-10-12, 09:54 PM
Much appreciated will give that a try tomorrow, that sounds as thoe it could do the trick.
K24_STE
25-10-12, 12:26 PM
Right Basically I have, From the supplyed loom
Red wire goes to pin 87b
Blue with white trace goes between pins 85b and 86 but doesn't connect to a pin :-/
Then I have wired the fuel pump up to pin 87
And pin 30 to 12v.
Is this right?? sorry but not my strongest point at all.
Thanks again.
Edit: And what goes to pins 85 + 86?
how many pins has your relay got?
Do you have a multimeter handy?
Test the Red wire... see if its always 12V (or 12V when the ign/engine is on)
It 'looks' like Red should goto 85 or 86
The Blue/White to the other one or 85/86 that you didnt connect the above to.
12V to 30 as you say and then the fuel pump to 87 or 87B
In short, 85 and 86 make the relay turn on/off, 30 and 87/87a/87b are the high current path for stuff like fuel pumps
K24_STE
25-10-12, 03:53 PM
Sorted now much apreciated, Thanks for your help.
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