where's relay 109? got error terminal 30, wont start

got error terminal 30, wont start, also getting 01314 error

friend has a 2007 Octavia that has a repeatable fault with starting.

if the ignition is left on or its a hot day/car hot, when the keys is turned the engine just spins. if the ignition is left off for a few minutes it will generally start.

when using my vcds cable, during the non start period I cant get any coms from the engine ecu.

I wonder if it is the 109 relay prob. but we cant find it. looked under the drivers foot well but cant see a relay with that number.

the 2 errors we get are:

005633 - Relay for Supply Voltage Terminal 30 (J317) on the engine ecu.

and

01314 - Engine Control Module on almost all the other ecu's.



new battery was fitted and still doing it.

its like something is overheating?

when it will start the engine light comes on and esp comes on briefly, after starting engine the engine light goes out.

when it wont start the esp light stays lit and there is no engine light.

Is it a diesel? look over this thread.. https://www.briskoda.net/forums/topic/189261-engine-cut-off-and-relay-109/

yes its a diesel, and that thread refers to the mk1 this is a mk2.

here, read this thread then. lol post #5 and #9..

It is not relay 109 on this car though, it is the terminal 30 relay as it is known or J317 and these are located in the engine bay fuse box.

http://www.volkswagenforum.co.uk/showthread.php?t=16668&p=55631&viewfull=1#post55631

you really should try and get a manual and see which relay is used for what

cheers hes going to have a look.

Done some testing...


644 Relay ALWAYS operates when key is on even in non start mode.
All fuses come alive when relay is closed. I think all the relay does is supply most of the fuses in that compartment, so there is no fault with relay.


When in start mode, after key turns off relay is deactivated about 10 seconds after.
If in non start mode relay drops out immediately key is turned off.