Joshbev95 Posted April 12, 2023 Report Share Posted April 12, 2023 Hi all, I have a g4x Xtreme and I'm having problems setting up ethrottle on my Corrado VR6. I am using a Bosch 0280 750 097 throttle from a later VR6 as it bolts straight up to my manifold. I keep getting error code 84: aux9/10 E-throttle IC Over Temperature/ Undervoltage. This is preventing me from auto calibrating the tps. I also get error code 76: tps main/tps sub tracking error. I have followed the first time setup page and when i go to calibrate tps, I get error 5: no tps main movement, then I hear the ethrottle relay click and error codes flags up. I have tried another throttle body already but it comes back with the same errors so I believe it may be a config issue so i have attached some photos if someone could check my settings are correct. I hope some one can help. thanks Josh Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 12, 2023 Author Report Share Posted April 12, 2023 log.llgx Corrado G4X xtreme.pclx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 12, 2023 Report Share Posted April 12, 2023 Have you run the TPS Calibration because your TPS (Main) and TPS (Sub) are quite different to each other I suspect given it doesn't move the one time it tries to apply duty cycle that you have a wiring issue but trying the TPS Calibration and logging over that attempt should show this. Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 12, 2023 Author Report Share Posted April 12, 2023 4 minutes ago, Vaughan said: Have you run the TPS Calibration because your TPS (Main) and TPS (Sub) are quite different to each other Unfortunately it won’t allow me to complete the calibration. It comes up with error 5 no tps main movement. I’ve trieddifferent throttle bodies and I believe my wiring is correct. I checked the runtime values list and when I move the throttle plate by hand I can see the tps value change Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 12, 2023 Report Share Posted April 12, 2023 If it doesn't move when you try to do a TPS Calibration then that needs to be fixed before it will work. To confirm did you have all of this working correctly before on the Link ECU and the old throttle body? Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 12, 2023 Author Report Share Posted April 12, 2023 Ok i will double check all my wiring and try to resolve that issue. Would that issue be related to the error 84 issue? the car is a fresh build, I’m yet to fire it up, was just trying to get everything in check Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 12, 2023 Report Share Posted April 12, 2023 15 minutes ago, Joshbev95 said: Ok i will double check all my wiring and try to resolve that issue. Would that issue be related to the error 84 issue? yes Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 13, 2023 Report Share Posted April 13, 2023 You can see in your log when the ecu sends maximum -ve DC to the motor there is no change at all in the aux 9/10 supply voltage trace. The voltage would drop as DC/current is increased if there was an electrical load connected to aux9/10 pins. It appears you have an open circuit so I would be suspicious you have the pinout wrong. Is your throttle wired like below? Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 13, 2023 Author Report Share Posted April 13, 2023 Hi Adam thanks for your response. I have confirmed that my wiring is exactly as you described in your message. Any other things to try? I’m clutching at straws here really. I’m still getting the same error 5 no tps main movement when I try and calibrate. I’ve tried on two different throttle bodies as well. Thanks josh Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 13, 2023 Report Share Posted April 13, 2023 Pull the aux 9 and aux 10 wires out of the ecu plug. Measure the resistance between those 2 wires, I would expect less than 20ohm if the motor is connected correctly. Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 14, 2023 Author Report Share Posted April 14, 2023 Hi Adam, I am reading 3.8ohms across aux 9 and 10 pins Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 16, 2023 Author Report Share Posted April 16, 2023 On 4/13/2023 at 10:40 PM, Adamw said: Pull the aux 9 and aux 10 wires out of the ecu plug. Measure the resistance between those 2 wires, I would expect less than 20ohm if the motor is connected correctly. I’ve been over all the wiring again and it is all correct. Tried different throttle bodies again. Updated the firmware. I can manually operated the throttle and get tps values change in run time values. I can get the throttle to move when I put a power probe across the terminals for the motor when it’s out of the car but from what I can tell it’s almost like the ecu can’t put the motor- (aux10) down to ground. I’ve checked all my ecu grounds to the engine block too and they all check out. Im really stuck with this. Is there chance the ecu could be at fault? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 16, 2023 Report Share Posted April 16, 2023 Can you manually move the throttle blade fully open/closed and note down the AN3&6 voltages then enter those in manually as the open/closed voltages. Then if you change the "when stalled" setting to run, do you hear the throttle motor whining? And confirming the motor is connected to the 2 bottom left pins in B connector right? Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 16, 2023 Author Report Share Posted April 16, 2023 11 minutes ago, Adamw said: Can you manually move the throttle blade fully open/closed and note down the AN3&6 voltages then enter those in manually as the open/closed voltages. Then if you change the "when stalled" setting to run, do you hear the throttle motor whining? And confirming the motor is connected to the 2 bottom left pins in B connector right? I will try that shortly, we haven’t heard the throttle whine at all when on run throttle yet on all of the throttle bodies we have. I can confirm the motor is definitely connected to aux 9 and 10. Aux 9 motor +, aux 10 motor -. Ethrottle relay connected to aux 9 Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 16, 2023 Report Share Posted April 16, 2023 Can you give us another fresh log as well. start log, switch to run when stalled, attempt a TPS cal again, save log. 8 minutes ago, Joshbev95 said: Ethrottle relay connected to aux 9 You mean aux 7 right? Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 16, 2023 Author Report Share Posted April 16, 2023 Will do. I mean this connection marked in blue. Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 16, 2023 Report Share Posted April 16, 2023 12 hours ago, Joshbev95 said: I mean this connection marked in blue. Its not connected to aux 9 though right? It should be pin B5. Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 16, 2023 Author Report Share Posted April 16, 2023 3 minutes ago, Adamw said: It’s not connected to aux 9 though right? It should be pin B5. ah… I believe this maybe my issue from misunderstanding the drawing. Would have I caused damage to the ecu connecting it how I’ve got it at the moment? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 16, 2023 Report Share Posted April 16, 2023 Hard to say, the driver is pretty robust and has a lot of protection built in but wont survive everything. Can you do a quick sketch of how it is all connected, I cant quite see how you would have both the relay and motor connected to aux 9. Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 16, 2023 Author Report Share Posted April 16, 2023 Excuse the untidy drawing but that’s how I’ve wired. From what you’ve said in previous responses has highlighted an error for me which I will get corrected. Hopefully it resolves the issue and no damage has been caused. thanks for your support so far Quote Link to comment Share on other sites More sharing options...
koracing Posted April 16, 2023 Report Share Posted April 16, 2023 If this is a G4X XtremeX wire-in ecu, you need to cut the wire going to Aux9 from the relay, and connect it to the B-loom connector pin 5 instead labelled in the quick start guide as "+14V Aux9/10". Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 16, 2023 Author Report Share Posted April 16, 2023 1 minute ago, koracing said: If this is a G4X XtremeX wire-in ecu, you need to cut the wire going to Aux9 from the relay, and connect it to the B-loom connector pin 5 instead labelled in the quick start guide as "+14V Aux9/10". Thanks, obviously this doesn’t help being wired how I’ve got it at the moment but would this be the problem area from my error 84 code? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted April 17, 2023 Report Share Posted April 17, 2023 37 minutes ago, Joshbev95 said: Thanks, obviously this doesn’t help being wired how I’ve got it at the moment but would this be the problem area from my error 84 code? yes, you're back feeding power into the ECU through the Aux so as soon as you try to use it it won't be able to supply the required current Quote Link to comment Share on other sites More sharing options...
Joshbev95 Posted April 17, 2023 Author Report Share Posted April 17, 2023 Wiring changed and Ethrottle is now all working correctly. thanks for everyone’s help. the support has been great! much appreciated. josh Vaughan 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.