Testing Heater /Glow plugs with VIDA

[IainG]

Hi I have reposted this under its own heading as it will be easier to find and could be useful to others.

And todays job was to actually find a way of testing if the new glow plugs and the relay actually worked.

I found Vida has a Glow plug test.
You can activate the glow plug relay in VIDA. When I did this you could hear the engine load up. So they appear to be working. Just to prove it, I disconnected the multi plug under the bonnet and checked the voltage on all 4 pins on the supply side. All were the same and over 14.5 volt.
I then put an ammeter between the pins in the plug and the socket, all 4 currents were the same. So all good again.
The last test I wanted to do was to prove the voltage stayed there (at the multi plug) whilst the heaters were on, this proves the wiring and relay up to the multi plug whilst under load. I used a paperclip to push in the wire side of the Multi plug to pick up the voltage whilst the plug is connected and activated the plugs in VIDA. 14.33 V on each pin. I have now proved all 4 heater plugs and the relay and all the wiring is good.