Lee Mackenzie

Hi Scott thanks for the reply, input signal is fine the ecu compensates for ac load, pin 9 is ecu ouput to the ac comp clutch relay, which has an ign 12+ to it and requires a 12v switched to activate the relay, i currently have pin 9 backed out and my ign turns off fine, with pin 9 connected the engine will stop when the ign is switched off but all my dash lights and thermofan, heater etc keep running, somtimes it would shut down after a few seconds other times it wouldnt shut down untill i restarted the engine and tried again. Pin9 aux3/ac clutch is feeding positive to the relay when the relay requires neg, i know with the G4 i can switch the polarity but i cant even find anything in the software on the g1 that even refrences the ac except for enrichment. i am thinking that my ecu may have issues as i cannot set tps span, the command is there in offline mode, but with the ign on engine not running and connected to ecu the tps set function dissapears, also i loose communication with the ecu after about 10 mins,( have to leave the car off for about an hour then i can connect again.) the board on the ecu says gts194, from what i can find its a G1 but i may be mistaken Thanks Lee

I have a R33 gtst with a link g1 gts ecu, i had an issue with the ignition not shutting down and tracked it to pin 9 on the ecu having a constant 12+ output, where it should be a 12v- switched out put, i cant find anything in the software and ecu mapping where i can switch the polarity of the ac clutch trigger, (I know with the g4 ecu i can switch between high and low polarity) . any ideas on how i can solve this problem as i would really like to get my ac working. other issue i have is on cold start it will hold 1500 rpm for 30 mins + until it finally drops to idle, i have not been able to find any duration or temp setting for cold start only a % setting which is supposed to drop after the engine reaches 50 deg C. any help towards solving these issues would be greatly appriciated thanks Lee