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Old 08-20-2016, 03:10 PM   #1
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W22 OBDII power

Anyone know which switch powers the OBDII port on a W22 chassis?
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Old 08-20-2016, 03:45 PM   #2
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I have never seen a switched obdii port. Maybe you are asking about the fused circuit?
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Old 08-20-2016, 05:45 PM   #3
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There is no switch. Its powered by the chassis computer.
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Old 08-20-2016, 07:51 PM   #4
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Quote:
Originally Posted by jaunderwood View Post
Anyone know which switch powers the OBDII port on a W22 chassis?

I believe the OBD ll port is only available after the ignition switch is on.
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Old 08-20-2016, 08:14 PM   #5
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W22 OBDII power

Good electrical trouble shooting.
Anything else not working?
Check the fuses in the black fuse block under the dash access panel.
Dale aka Oemy has some great resources.
http://www.oemys-performance.com/techtips5.htm#fuses
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Old 08-20-2016, 11:49 PM   #6
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https://www.google.com/search?q=obd+...YXtYYOZ5YrM%3A

There ya go...pin outs.
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Old 08-21-2016, 12:15 AM   #7
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OBD port and auxiliary (cigarette lighter) port are on same fuse, believe it's a 5A.
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Old 08-21-2016, 08:51 AM   #8
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Correction

Thanks for the replies. I meant fuse not switch that powers the J1939 port on The W22 chassis with the a Maxx Force 7 diesel engine. It is where a scan gauge plugs in. The scan gauge is not powering up and I am trying to determine which fuse powers it.
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Old 08-21-2016, 02:13 PM   #9
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Thanks for the replies. I meant fuse not switch that powers the J1939 port on The W22 chassis with the a Maxx Force 7 diesel engine. It is where a scan gauge plugs in. The scan gauge is not powering up and I am trying to determine which fuse powers it.

FWIW, since you have WCC diesel powered chassis, you have a W-22D.
You can rely on the info provided by "Ultra" above. Jon knows WCC.
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Old 08-21-2016, 04:18 PM   #10
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Pin 16 is your power, if the fuse is not blown and you have power at that pin then you've got a bad cord or ScanGauge.
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Old 08-21-2016, 05:54 PM   #11
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Scan gauge cable

It is a scan gauge D (diesel engine). The scan gauge d cable has only 9 pins and it plugs into the J1939 port.
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Old 08-25-2016, 03:41 PM   #12
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Fixed

Never figured out where the J1939 gets it power, but I sent the scan gauge D back to Linear Logic for analysis. Turns out it had a bad pc board, They replaced the pc board and sent it back inside a week free of charge. Yea!
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