SAE J 1978 : 2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Foreword
1 Scope
1.1 Purpose
1.2 Differences from ISO Document
2 References
2.1 Applicable Publications
2.1.1 SAE Publications
2.1.2 ISO Publications
2.2 Related Publications
2.2.1 ISO Documents
3 Terms and Definitions
4 Required Functions of the External Test Equipment
5 Communication Protocols
6 Connections to the Vehicle
7 Network Access
7.1 Automatic Determination of Communication Interface
7.2 Handling of No Response from the Vehicle
7.3 Handling of Multiple Responses from the Vehicle
7.4 Message Structure
7.5 Diagnostic Trouble Codes Monitoring
7.6 Obtain and Display OBD Emissions Related Current
Data, Freeze Frame Data, and Test Parameters and
Results
7.7 Code Clearing
7.8 On-Board Diagnostic Evaluations
7.8.1 Completed On-Board System Readiness Tests
7.8.2 Supported On-Board System Readiness Tests
7.8.3 Malfunction Indicator Lamp - Status and Control
7.9 Use of StopCommunication Service Associated with ISO
14230-4 (optional)
8 User Interface
8.1 Display
8.2 User Input
9 Power Requirements
9.1 Vehicle Battery Voltage
9.1.1 Vehicle Battery Voltage for 12 V DC only
9.1.2 Vehicle Battery Voltage for 12 V DC and 24 V DC
9.2 Vehicle Battery Current Consumption
10 Electromagnetic Compatibility (EMC)
11 Conformance Testing
11.1 General
11.2 Determine OBD Communication Type
11.3 On-Board System Readiness Test
11.4 Select Functions
11.5 Select and Display
11.6 Confirm Requests to Clear Codes
11.7 General Diagnostic Communication Tests
11.8 Capacitance and Impedance at the Diagnostic Connector
11.9 Operating Voltage and Current Requirement
11.10 Protocol Check
11.11 Alphanumeric Display
11.12 User Manual and Help Facility
12 Notes
12.1 Marginal Indicia
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