Hello,

I have been having issues with the dreaded GU sub tank light on dash issue. It has happened before and fixed itself after a couple of weeks ignoring it. This time it seems to not want to come right. I have tried disconnecting the battery and no luck.

I started to read the manual and have found the relevant section but, I cannot seem to get the diagnoses mode to activate.

"SELF-DIAGNOSIS PROCEDURE
After turning the ignition switch ON, turn the sub fuel tank switch ON and OFF more than 5 times. Make sure the indicator lamp directly above the sub fuel tank switch flashes every 2 seconds. If the indicator lamp does not flash, repeat the check procedures. (The self-diagnosis system will then start.)"

I cannot get it to flash and do not know what it means by "repeat the check procedures". I have done some more reading and I am considering buying a new sub tank switch, though at nearly $90 I though I should ask the experts first.

Once again, thanks in advance for your time,

Cam

Sorry, 99 GU1 Wagon TD42T manual