Diagnostic connector pin-out help

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Jun 4, 2007 | 11:27 PM

jonota

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Joined: Jan 2003

Posts: 299

From: Honolulu, Hawaii

Diagnostic connector pin-out help

Can't connect to the PCM with my HPtuners, says no power at the diagnostic connector. Does anyone have the pinout or wiring diagram for it so I can trace it?

Thanks,
Jonota

Jun 5, 2007 | 06:35 AM

AL SS590 M6

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Posts: 6,247

From: Charlotte,MI USA

Quote:

Originally Posted by jonota

Can't connect to the PCM with my HPtuners, says no power at the diagnostic connector. Does anyone have the pinout or wiring diagram for it so I can trace it?

Thanks,
Jonota

For what car?

Jun 5, 2007 | 11:44 AM

2001NBMZ28

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Posts: 1,655

From: Jacksonville, FL

Check the "CIG/ACCY" fuse, it powers the DLC port.

Jun 5, 2007 | 12:06 PM

jonota

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Joined: Jan 2003

Posts: 299

From: Honolulu, Hawaii

For a 1998 Z28 (sorry), I'll check that fuse, the lighter plug-in doesn't work, could that also cause a problem...

Interestingly enough someone was able to pull codes out of it not too long ago... hmm.

Thanks for the inputs guys

Jonota

Jun 5, 2007 | 12:22 PM

2001NBMZ28

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Joined: Jul 2001

Posts: 1,655

From: Jacksonville, FL

They're on the same circuit so the fuse is blown. If it blows immediately I'd look at the lighter ports, or whatever cell phone cord, etc. was plugged in.