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07-25-2018, 06:28 PM | #1 |
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Electrical Issue
I have a 2015 Subaru BRZ and I currently installed my HKS supercharger. Just so happens after install my climate control, VSC buttons, window buttons, trunk button, wont come on. I checked fuses, but none seem to be blown. I was wondering if maybe I nudged something while installing the supercharger or just missed plugging something up. I checked all grounds also. The gauge cluster, start button and dome light come one just fine. Just wonder if anyone had this problem or if there is something I’m missing. Please help if you can.
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07-25-2018, 07:06 PM | #2 |
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UPDATE.. I found out that I don’t have a fuse issue, but yet an issue with getting power to some of the fuses ( the circuit is not turned on) ..where do I start?
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07-25-2018, 08:33 PM | #3 | |
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Did you check the interior fuse box?
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07-25-2018, 08:35 PM | #4 |
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Yes but not getting power to some of the fuses ..mainly the ones that are causing me the problems
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07-25-2018, 08:53 PM | #5 | |
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You're going to need this and find whats common between those that are not working: http://www.ft86club.com/files/BRZwiringi.pdf Logically in my brain I would think a relay is stuck or a wiring harness got partially crushed or cut somewhere
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07-25-2018, 09:00 PM | #6 | |
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The troubleshooting section is particularly useful on page 12 and also look at page 378, before most of the fuses, they go way back to an 80 amp and 140 amp fusible link, and even after those on page 380 there's a 7.5 amp ECU-B fuse that can also effect the systems you mentioned aren't working in the engine bay...
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07-25-2018, 09:53 PM | #7 |
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At this point I have changed all fuses, and have to trace the wiring harness to look for damage or loose connections. Not sure how to check and see if I have a bad relay
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07-25-2018, 11:01 PM | #8 | |
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I assume you're using a multi meter. The multi-meter should read 0 ohms between the contacts:
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07-26-2018, 08:10 AM | #9 | |
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07-29-2018, 11:41 AM | #10 |
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UPDATE: I have checked all relays supposing that I was checking them correctly at 20 ohms. (Correct me if I’m wrong). I checked all fuses in the engine bay which all seem to work besides the headlight ones and the windshield wiper ones (a total of six). But get this ...when i connect the battery none of them work..which leads me to believe that’s a relay problem. Also I checked the fuses again inside the car under the driver side dash and all seem to work except for the heater ones and the ones that control the traction button and trunk button. (A total of six). I just want to make sure I am checking the relays properly..if anyone has any input on that it would be greatly appreciated.
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07-29-2018, 03:02 PM | #11 | |
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[ame]https://www.youtube.com/watch?v=ire7vyDqelg[/ame]
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07-29-2018, 04:30 PM | #12 | |
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Don't forget that the 12vdc side is only half the circuit, you still have returns and the systems that are not working may share a common connector. As for relays, they are typically specific to 1 system only and won't affect other systems. Follow the video above if you really want to test them, but I see no reason to look at relays. Cool thing about relays is that a lot of them are interchangeable so if you suspect a bad one, swap it with a another from a system that is working. |
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07-29-2018, 05:40 PM | #13 |
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I used a test light to test the fuses, but now I am going back out to use the multimeter and check where the issue is coming from by using the diagram. Since I happened to check all the relays they are working just fine.
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08-02-2018, 11:37 AM | #14 |
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You've confirmed that you are not getting power to some of the fuses necessary. Have you traced that power back to the source? If it ends in a relay and the relay is functioning, then the signal to trigger the relay is likely not there.
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