Not without knowing exactly what is expected at each pin - and that may mean that you won't see DC voltages (that you can measure with a multimeter) at all pins.

It is a little more complex than you seem to think. I'm not trying to be negative but I probably wouldn't know where to start even if it was my own car.

If you are losing colours on the screen, losing sound, switching off, etc., that doesn't point to an amp fault. I'd initially look for a connection fault inside the head unit.

I'll be heading off to bed shortly (it's 10.40pm) so probably won't see your reply until tomorrow morning. Ron B. VK2OTC
2003 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

every days a school day pal and if you don't ask you wont learn anything ! I does turn itself off at times but the main thing is the sub woofer doesn't work so the sound is tinny as heck and when I start the car I get a loud pop through the speakers before the radio comes on

Not sure what system you have but if it is HK Logic 7 you should check that it has been enabled. You do it through the set up screen. It is just a question of selecting it.

If it is the system you have, the standard audio is a bit tinny but the Logic 7 is very much better. John
2008 Stornoway Grey 3.6 Tdv8 Vogue - SOLD
2005 TD6 Java Black Vogue - Written off!!
GAP iiD BT-Sold

Bembo have you sorted your issue yet as mines still present similar symptoms to what your experiencing I posted a thread also.
Cheers
Jay Range Rover Vogue SE 4.4 SDV8 SVO Stying Pack
Audi A4 2.7 TDI S Line Black Edition phantomn black
Previous Cars
Range Rover Vogue SE Overfinch Styling 22" Elara's full black stealth colour coded
Java black Range Rover sport 2.7 TDV6
Alaska white Range Rover sport overfinch 3.6 TDV8
BMW M3 Carbon Black

mines gerrin worse jay , still no base and the sodding thing switches itself off randomly about 7 times per 20 minute journey , doing my nut in pal

That's Range Rover ownership for you!

well summat needs doing as I cant stand it as it is , I love music on in the car so need to look at options for replacement . . . . .

Weegie wrote:

Not sure what system you have but if it is HK Logic 7 you should check that it has been enabled. You do it through the set up screen. It is just a question of selecting it.

If it is the system you have, the standard audio is a bit tinny but the Logic 7 is very much better.