SAE J1587: Difference between revisions
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Revision as of 20:38, 11 August 2009
J1587 is an automotive diagnostic protocol standard developed by the Society of Automotive Engineers (SAE) for heavy-duty and most medium-duty vehicles built after 1985. The J1587 protocol uses different diagnostic connectors. Up to 1995, individual OEMs used their own connectors. From 1996 to 2001, the 6-pin Deutsch was standard. Beginning in 2001, most OEMs converted to the 9-pin Deutsch. Some OEMs still use the 6-pin Deutsch.
The pinout for the 9-pin connector is:
PIN | SIGNAL |
A | Ground |
B | Unswitched +12 VOLTS |
F | J1708Datalink (+) |
G | J1708Datalink (-) |
The pinout for the 6-pin connector is:
Pin | Signal |
A | J1708Datalink (+) |
B | J1708Datalink (-) |
C | Unswitched +12 VOLTS |
E | Ground |
J1708 makes up the datalink and physical layer that supports J1587.