OBD port not getting any power?
Thread Starter
Honda-Tech Member
Joined: Sep 2004
Posts: 69
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From: Phoenix, Az, United States
So I recently tried to get my yearly emissions test done here in arizona. I was shocked to find out that I failed the test, reason being is that my obd port wasn't getting any power to it
has anyone had this problem before? I haven't seen it happen before and doing a search didn't yield anything (or I suck at searching for things)
I have a 2007 S2000 too if that matters at all
has anyone had this problem before? I haven't seen it happen before and doing a search didn't yield anything (or I suck at searching for things)
I have a 2007 S2000 too if that matters at all
Thread Starter
Honda-Tech Member
Joined: Sep 2004
Posts: 69
Likes: 0
From: Phoenix, Az, United States
thanks for your response, but please forgive my ignorance; but does that mean its something in the ECU? is that a diagram of something?
Fuse No. 46 (15A) in the main under-hood fuse/relay box provides power/voltage through a Wht/Grn wire to the Data Link Connector/OBD port.
Fuse No. 46 also provides power to ECM, Ignition coil relay, PGM-FI main relay 1, and PGM-FI main relay 2. If that fuse was blown, you would have other issues; so, it may not be blown if you don't have other issues. But, check it anyways.
You can test with a voltmeter whether that OBD port's terminal no. 16 Wht/Grn wire has battery power, it should be hot at all times. Fuse No. 46 does provide power to the various components; but, there are separate Wht/Grn wires that split off at a 16P Lt Blu connector under the right side of dash.
Fuse No. 46 also provides power to ECM, Ignition coil relay, PGM-FI main relay 1, and PGM-FI main relay 2. If that fuse was blown, you would have other issues; so, it may not be blown if you don't have other issues. But, check it anyways.
You can test with a voltmeter whether that OBD port's terminal no. 16 Wht/Grn wire has battery power, it should be hot at all times. Fuse No. 46 does provide power to the various components; but, there are separate Wht/Grn wires that split off at a 16P Lt Blu connector under the right side of dash.
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