On-Board Diagnostics II Bus

On-Board Diagnostics [OBD] is a motor vehicle bus used to monitor engine functions. OBD II is the second generation of that interface. The graphic below details a male OBDII to Right Angle female DB9-pin Cable assembly.

DB9 to OBDII cable assemble
OBDII to Right Angle DB9 Cable assembly

This is one of several pages showing OBDII cable assemblies
Each additional graphic showing a different OBDII style connector.
OBDII Connector to DB15 pin Cable
Female OBDII Connector to 2x2 pin Cable
Right Angle Male OBDII Connector to DB-9pin Cable [straight DB9]
Male OBDII Connector to Male DB9-pin Cable [straight DB9]
Male OBDII Connector to Male DB15-pin Cable
Male OBDII Connector to Female OBDII Cable
BMW Connector to Female OBDII Connector Cable Assembly

There is only one size available for a 9-pin D connector, a DE size shell which defines the shell or exterior size of the connector. A nine position DE shell [referred to as a DB9] uses 22 size contacts. A standard 9-pin D type connector may be straight or right-angle, as used above.

Note that different connector styles are offered so that the OBD cable will mate with different types of instrumentation, which may use other connector styles.

Back to the main OBDII description page, or Signal Assignments OBDII pinout

All other Automotive Bus descriptions

OBD Interface Cable

OBD, Pinout, Cable, Car
Computer, Assembly, Auto
Manufacturer, Diagnostic, OBD9

Related Buses:
Vehicle Bus descriptions
Dsub Connector Manufacturers
Dsub Mechanical Dimensions
Dsub Insert Arrangements

Editor note;
Correct name for 9-pin D
Shell size DE shell [DE9]

Larry's Web Page

Electronic Parts and Equipment Distributors Electronic Component Manufacturers OEM Electronic Equipment Manufacturers EDA Software Producers CAD/CAE Software Engineering Standards, EE Publications Interface/Embedded Computer Bus Electronic Engineering Design Data Engineering Reference Information.
DistributorsComponents Equipment Software Standards Buses Design Reference

Modified 1/21/12
Copyright © 1998 - 2016 All rights reserved Larry Davis