Glow Plug - VAG Info

[PCDoctor]

Hi all

Does anyone know if the below is correct

In VAG-COM measuring blocks for glow plugs it show 11111111 when engine running showing that all glow plug are off

BUT

With the igniton key in pre start ie glow plug light goes out it shows 01010000

Should they be all 00 or is this correct

Thanks in advance

[martin1810]

00010000 = Pre-Glow, plugs are on.
01010000 = No Pre-Glow, plugs not on

There is no 00000000 block. Just variations of 0 and 1 combinations to allow for other states. Not all states are possible on all cars.

[PCDoctor]

Does anyone know what the below item b) glow plug combination means the extra one... !!!!

I Saw a) 01010000

Then after 30 secs ish b) 01011000

Then after a min or two it went to its normal c) 11111111

[martin1810]

00000000 = Waiting for Coolant Temperature
00000001 = Waiting for ECO Start Request
00010000 = Pre-Glow
01010000 = No Pre-Glow
10110000 = Post-Glow
11000000 = No Post-Glow
11110000 = Interim Glow
00110000 = Readiness Glowing
01110000 = Glow Start
10110001 = Waiting for Post-Glow
11010000 = No Post-Glow
11110001 = Waiting for Interim Glow
11111111 = Glowing OFF

[PCDoctor]

Awesome

Does not get any clearer than that...