Jimboslice 10 Posted April 15, 2018 Hi guys my speedo isn't working on my 1.8t AGU. The car was a 9a before with electronic speed sensor not the cable type. I've plugged in the gearbox connector and tried 2 different sensors and still nothing. Am I missing something? I've got code P0501/16885 and did have 00515 camshaft sensor but that has cleared and not come back. Quote Share this post Link to post Share on other sites
Philly-R6 0 Posted April 15, 2018 Have you tried the suggestions regarding the retrieved code? http://wiki.ross-tech.com/wiki/index.php/16885/P0501/001281 Quote Share this post Link to post Share on other sites
Jimboslice 10 Posted April 15, 2018 Well I don't know exactly where the other end of the wire goes to, ECU? In which case there's no way it's not plugged in. And I'm under the impression the ABS wheel sensor is irrelevant? The ECU gets its speed from the gearbox right? Quote Share this post Link to post Share on other sites
Jimboslice 10 Posted April 22, 2018 Can anyone help me with this? I've narrowed it down to the VSS plug not giving me 12v ignition live. 5v signal works and ground has continuity. Does anyone know where the 12v comes from (G22)? Quote Share this post Link to post Share on other sites
GrahamU 6 Posted April 23, 2018 The 12v comes from the ignition live feed, benley shows the same feed as the ECM IGN live, its a black wire that comes from G1/4 of the fuse box (thick wire from fuse then spliced to a smaller black wire) For my 1.8T conversion, the signal to the gearbox sensor went direct to the cluster to drive the speedo and didnt go to the engine ECU. This time I have wired it so the signal T's off and also runs to the ECU (but its not running yet). Quote Share this post Link to post Share on other sites
Jimboslice 10 Posted April 23, 2018 I'll check G1/4 then thanks. It's a white/black wire from the connector so does it go to ECU and then to fusebox as a solid black? I hate auto electronics Quote Share this post Link to post Share on other sites
Jimboslice 10 Posted April 25, 2018 G1/4 is wired to the clutch switch which I don't even have. I've figured out it's wired for a mk4 so it goes from pin 1 on the vss BLK/WHT to t14a/2 BLK/GRN and then from there I can't find a diagram to help me locate. All I've got is it goes to b163? Quote Share this post Link to post Share on other sites
Philly-R6 0 Posted April 25, 2018 There is a chap named rubjonny - a moderator on the Club GTi forum - who has accrued many useful documents: have a rummage: https://drive.google.com/drive/folders/0B_V9-6xfgGlINzhhM2IyNmItOWRhZS00MzBkLTk2MTEtNGIyZDFmMDg0NWM2?hl=en_GB Look for something like g3vr6ecu95on.pdf - keep scrolling down, and more items are listed. Quote Share this post Link to post Share on other sites
Jimboslice 10 Posted April 25, 2018 I've already been through rubjonny's repository and I've basically now realised whoever has done the loom has put the 12v feed absolutely anywhere and I don't think I'll find it. Regardless I'm not getting 12v. I'll check my fuses and then I'll run a new 12v. Any recommendations on the best place for ignition live? The closer to the gearbox the better I guess Quote Share this post Link to post Share on other sites
Jimboslice 10 Posted April 25, 2018 It does say it goes up positive connection 1 (15), in interior wiring harness. But I have no idea where and what this is Quote Share this post Link to post Share on other sites
swiftkid 1 Posted April 26, 2018 It's been a quite a long time since I did the wiring on mine (r32 but same principle). According to my scribbles, I did pin 1 to g1/4, pin 2 to g1/11 and pin 3 to earth. In my notes I've put that t121/54 needs to go to w1 via the blue junction boxes above the fusebox (blue/white wire with blue plug, I think). G1/4 is the ignition live and g1/11 is dash feed. I think the t121/54 limits the ecu to 4k so as you haven't said anything about that I presume it's already been done Sent from my SM-G930F using Tapatalk Quote Share this post Link to post Share on other sites
Coalcracker89 10 Posted August 5, 2018 It's been a quite a long time since I did the wiring on mine (r32 but same principle). According to my scribbles, I did pin 1 to g1/4, pin 2 to g1/11 and pin 3 to earth. In my notes I've put that t121/54 needs to go to w1 via the blue junction boxes above the fusebox (blue/white wire with blue plug, I think). G1/4 is the ignition live and g1/11 is dash feed. I think the t121/54 limits the ecu to 4k so as you haven't said anything about that I presume it's already been done Sent from my SM-G930F using Tapatalk Swiftkid awesome info here. I have a 20v into a 92 corrado with digital cluster i read this and ran 3 wires off the sensor on trans to the g1/11, g1/4, and earth. I believe I also have the t121/54 hookup but maybe not as I have the 4k restriction. My Speedo, wing, and 4k restriction is driving me nuts please any advice is appreciated!! Quote Share this post Link to post Share on other sites
Jimboslice 10 Posted August 5, 2018 Who did your wiring? Quote Share this post Link to post Share on other sites
Coalcracker89 10 Posted August 5, 2018 Who did your wiring? S&P made me a harness i plugged into factory fuse block. I mailed them the 20v harness and the vr6 obd2 harness that was in the car already. (It was previously vr6 obd2 swapped) Quote Share this post Link to post Share on other sites
