1、 _ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising ther
2、efrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2016 SAE International All rights reserved. No part of this
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4、70 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1962_201607 SURFACE VEHICLE STANDARD J1962 JUL2016 Issued 1992-06 Revised 2016-
5、07Superseding J1962 SEP2015 Diagnostic Connector RATIONALE This document is being revised by the SAE J1962 Task Force in response to a request from the California Air Resources Board (CARB) to SAE for clarification regarding the access area to the vehicle diagnostic connector that is intended to pro
6、vide proper clearance for the mating of the scan tool connector to the vehicle. As a result of the CARB request, the SAE Vehicle E/E System Diagnostic Standards Committee approved the task of reviewing and revising for clarification this SAE J1962 Specification. FOREWORD On-Board Diagnostic (OBD) re
7、gulations require passenger cars, and light and medium duty trucks, to be equipped with a standardized connector for purposes of access to on-board diagnostic information by “generic” test equipment. This document describes the requirements for the physical connection and associated pin usage to all
8、ow for standard access to the OBD data. SAE J1962 was originally developed to meet U.S. OBD requirements for 1996 and later model year vehicles. ISO 15031-3 was based on SAE J1962 and was intended to meet European OBD requirements for 2000 and later model year vehicles, and added a modified connecto
9、r type to accommodate vehicles with a 24 V system. SAE INTERNATIONAL J1962 JUL2016 Page 2 of 23 TABLE OF CONTENTS 1. SCOPE . 3 1.1 Purpose 3 1.2 Differences from ISO Document 3 2. REFERENCES . 3 2.1 Applicable Documents . 3 2.2 Related Publications 4 3. TERMS AND DEFINITIONS 5 4. VEHICLE CONNECTOR L
10、OCATION/ACCESS 5 4.1 Consistency of Location . 5 4.2 Ease of Access . 7 4.3 Visibility 10 4.4 Vehicle Operation . 10 5. VEHICLE AND EXTERNAL TEST EQUIPMENT CONNECTOR DESIGN . 10 5.1 Dimensions . 10 5.2 Number of Contacts . 10 5.3 Contact Requirements . 10 5.4 Connector Mating . 10 5.5 Connector Shap
11、e/Features 10 5.6 Spring Clip 11 5.7 Temperature Class . 11 5.8 External Test Equipment Connector Cycle Life . 11 5.9 Strain Relief 11 5.10 Contact and Connector Parameters and Performance Requirements 11 6. CONTACT ALLOCATION AND SPECIFICATIONS FOR RELATED ELECTRICAL CIRCUITS 13 6.1 Vehicle and Ext
12、ernal Test Equipment Connector Contact Designation . 13 6.2 General Contact Allocation 13 6.3 Vehicle Connector Contact Allocation 13 6.4 Vehicle Connector Contact Protection . 15 6.5 External Test Equipment Connector Contact Allocations and Requirements for Related Circuits 15 6.6 External Test Equ
13、ipment Connector Contact Protection . 16 6.7 Minimum Impedance between External Test Equipment Connector Contacts 4, 5, and the External Surface of External Test Equipment 16 7. NOTES . 19 7.1 Revision Indicator . 19 Appendix A (NORMATIVE) Diagnostic connector types A Dimensions and Specific Require
14、ments ISO 15031-1:2010 Road Vehicles - Communication between Vehicle and External Test Equipment for Emissions-Related Diagnostics - Part 1: General information 3. TERMS AND DEFINITIONS 3.1 CONNECTION Two mated connectors or contacts. 3.2 CONNECTOR Assembly of contact and housing which terminates co
15、nductors for the purpose of providing connection and disconnection to a suitable mating connector. Diagnostic Link Connector, abbreviated DLC, is used interchangeably in this document. 3.3 CONTACT Conductive element in a connector (including means for cable attachment) which mates with a correspondi
16、ng element to provide an electrical path. 3.4 FEMALE CONTACT Electrical contact (including means for cable attachment) intended to make electrical engagement on its inner surface and to accept entry of a male contact thus forming an electrical connection. Examples: receptacle, sleeve. 3.5 MALE CONTA
17、CT Electrical contact (including means for cable attachment) intended to make electrical engagement on its outer surface and to enter a female contact thus forming an electrical connection. Examples: tab, pin, blade. 4. VEHICLE CONNECTOR LOCATION/ACCESS 4.1 Consistency of Location NOTE: Jurisdiction
18、al OBD regulations may specify a connector location that is more restrictive than specified in this document or the ISO 15031-3 document. They may also prohibit the use of covers which conceal the connector. Applicability of those regulations should be verified by the user of this document to ensure
19、 vehicle compliance. The vehicle coordinate system is designed as follows: positive x points toward the front of the vehicle, positive y points toward the left side of the vehicle, and positive z points up. See Figure 1 below. SAE INTERNATIONAL J1962 JUL2016 Page 6 of 23 Figure 1 - Vehicle coordinat
20、e system 4.1.1 Location and Position of Vehicle Connector Type A If the vehicle connector type A is used, the connector shall be located in the drivers side foot-well region of the vehicle interior, no higher than the bottom of the point where the steering column exits the instrument panel when at t
21、he lowest adjustable position. For left hand drive vehicles, the entire connector profile shall be located to the left of the left edge (+y direction) of the brake pedal (or clutch pedal, if equipped). The vehicle connector shall be securely mounted to the vehicle in order to facilitate mating and u
22、n-mating. The connector shall be mounted such that the face of the vehicle connector is pointing downward (90 from horizontal, the z direction) or toward the rear of the vehicle (0 from horizontal, the x direction), or any angle in between. See Figure 2 below. Tolerance: 5 The connector may be mount
23、ed vertically or horizontally, as shown in Figure 2, but may not be oriented in any other angles. Additionally, the orientation of the connector must follow the drawing in Figure 2. For vertically mounted connectors, the long side must be to the left (+y direction). For horizontally mounted connecto
24、rs, the long side must be on top (or rearward if the connector is pointing down). Tolerance: 5 SAE INTERNATIONAL J1962 JUL2016 Page 7 of 23 Figure 2 - Connector orientation (mounting limits) 4.1.2 Location of Vehicle Connector Type B If the vehicle connector type B is used, the connector shall be lo
25、cated in the passenger or drivers compartment in the area bounded by the drivers end of the instrument panel, including the outer side, and an imagined line 750 mm beyond the vehicle centerline. It shall be attached to the instrument panel and easy to access from the drivers seat or from the co-driv
26、ers seat or from the outside. The vehicle connector shall be mounted to facilitate mating and un-mating. 4.2 Ease of Access Access to the vehicle connector shall not require a tool for the removal of a connector cover, or any barriers. The vehicle connector shall be fastened and located so as to per
27、mit a one-handed/blind insertion of the mating external test equipment connector. If a cover (lid) is used, it has to fulfill the following requirements: x Clearly designated with the letters OBD. x Easy to remove without any tools. x Shall remain attached to the vehicle (hinged, tethered, etc.) whi
28、le open to avoid being lost, but must be able to be pushed out of the “Keep Clear” areas. NOTE: Jurisdictional OBD regulations may prohibit the use of covers which conceal the connector. Applicability of those regulations should be verified by the user of this document to ensure vehicle compliance.
29、SAE INTERNATIONAL J1962 JUL2016 Page 8 of 23 There must be two “Keep Clear” areas for access to the vehicle connector. These “Keep Clear” areas shall have the same orientation as the connector. The “DLC Clearance Area” (W 48 x H 25 x D 35 mm) for connector mating, and the “Technician Access Area” (W
30、 100 x H 80 x D 120 mm) for technician work space. For the Technician Access Area, offsets for width and height from the connectors centerline are allowed to enable connector positions next to obstructions, edges, or panels. Maximum values for these offsets are 26 mm for width and between +25.5 mm a
31、nd 29.5 mm for height. No offset from the connector centerline is allowed for the DLC Clearance Area. See Figures 3 and 4 below. Key (Figure 3): 1 DLC Clearance Area Dimensions: W 48 x H 25 x D 35 mm 2 Technician Access Area Minimum Dimensions: W 100 x H 80 x D 120 mm Footnotes (Figure 3): a)This po
32、rtion of the DLC Clearance Area (12 mm) is the overlap distance with the mating connector. b)Additional clearance of up to 23 mm maximum accommodates vehicle connectors with recessed mounting. c)Width dimension of DLC Clearance Area. d)Depth dimension of Technician Access Area (to provide ample work
33、 space for the technician). e)Width dimension of Technician Access Area. f)Maximum offset of Technician Access Area centerline relative to connector centerline in width direction (+ and direction from connector centerline). Figure 3 - Connector access area dimensions - viewed from above / side SAE I
34、NTERNATIONAL J1962 JUL2016 Page 9 of 23 Key (Figure 4): 1 DLC Clearance Area 2 Technician Access Area Footnotes (Figure 4): a)Offset of Technician Access Area centerline relative to connector centerline in width direction (+ and direction from connector centerline). Maximum value is 26 mm. b)Offset
35、of Technician Access Area centerline relative to connector centerline in height direction. Maximum values are +25,5 mm or 29,5 mm from centerline. c)This radius (1 mm) shall only be a tolerance for testing purposes of DLC Clearance Area and has no effect on panel designs, etc. Figure 4 - Connector a
36、ccess area dimensions - viewed from front SAE INTERNATIONAL J1962 JUL2016 Page 10 of 23 4.3 Visibility The vehicle connector shall be out of the occupants (front and rear seat) normal line of sight but easily visible to a “crouched” technician. 4.4 Vehicle Operation Attachment of external test equip
37、ment as well as any external prolonged data collection equipment (e.g. vehicle data recorders and loggers) shall not result in a physical obstruction or impediment to an individual attempting normal vehicle operation. 5. VEHICLE AND EXTERNAL TEST EQUIPMENT CONNECTOR DESIGN 5.1 Dimensions For basic s
38、pring clip and blade dimensions of the vehicle/external test equipment connectors see Figures 5 and 6. For the physical dimensions of the connector type A see Figures A1 and A2 and for the connector type B see Figures B1 and B2. The connector type B of the external test equipment connector shall hav
39、e the ability to mate with the connector type A and type B of the vehicle connector and the compliance of the electrical, mechanical, and climatic performances of the connection shall be guaranteed. The connector type A of the external test equipment connector shall have the ability to mate with the
40、 connector type A of the vehicle connector and the compliance of the electrical, mechanical, and climatic performances of the connection shall be guaranteed. 5.2 Number of Contacts The vehicle and external test equipment connectors shall each be capable of accommodating 16 contacts. 5.3 Contact Requ
41、irements 5.3.1 Contact Types The vehicle connector shall consist of female contacts that will mate with the male blade contacts of the external test equipment connector. 5.3.2 Contact Spacing Contact spacing is shown in Figures A2, and B2. 5.4 Connector Mating The external test equipment connector c
42、ontact mating shall be designed so that the signal ground and the chassis ground contacts of the external test equipment connector will make electrical contact prior to any other test equipment connector contacts making electrical contact. On the disconnect cycle, these same two contacts will not lo
43、se electrical contact until all of the other contacts have been disconnected. 5.5 Connector Shape/Features The mating portions of both connectors shall be isosceles trapezoid shaped with each corner having a radius. The face of the vehicle side connector must have straight lines for the four sides o
44、f the trapezoid (e.g., no cut-outs, extra holes, or ears allowed). Except for the holes for the 16 contacts and the slot/slots in the center, the face of the vehicle side connector must be solid (no other holes). The entire perimeter of the face of the vehicle side connector must lie in one plane (i
45、.e., no tapered edges). The connectors shall have easily discernible polarization features to allow for easy connection in a one-handed / blind operation. SAE INTERNATIONAL J1962 JUL2016 Page 11 of 23 The vehicle connector and the external test equipment connector shall have latching features that a
46、ssure the external test equipment connector will remain mated when properly connected. The latching feature shall be designed to provide a positive feel when the external test equipment connector is fully seated. The latching feature shall not require the activation of any levers on either connector
47、 to mate or un-mate. Pulling on the external test equipment connector in the disconnecting direction to separate the two mated connectors shall not result in any damage to either connector. 5.6 Spring Clip An optional spring clip (as specified in Figure 5) may be used on the external test equipment
48、connector. 5.7 Temperature Class The minimum temperature range for the selected material shall be in accordance with the class 2 of the environmental temperature range specified in table 3 of ISO 8092-2 (40 C to +85 C). 5.8 External Test Equipment Connector Cycle Life The external test equipment man
49、ufacturer shall specify the minimum number of mating cycles the external test equipment connector is capable of while meeting the requirements. 5.9 Strain Relief The external test equipment connector shall have strain relief features for the cable connected to it. 5.10 Contact and Connector Parameters and Performance Requirements 5.10.1 Preconditioning Take unused samples and perform 200 mating cycles be
