Interpreters Document


Typical Interpreter Line: (all Action and Goto fields are hex numbers)



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dps Interpreters

Typical Interpreter Line: (all Action and Goto fields are hex numbers) 
Step 
Op-Code 
Action Fields
Goto Fields 
01 
81 
00 00 00 00 
C1 02 FF 99 00 00 00 00 00 00 
CameraLoops.com



1993-2011 General Motors Company, GM Customer Care & Aftersales. All Rights Reserved.
Page
141 
82 Op-Code: SR 82 to Stop Communications
 
Supported By:
KWP2000 Interpreter 2
 
 
Description: 
The 82 Op-Code is used to stop communications with an ECU. There is no negative response allowed for the 
Stop Communication request.
Action Fields: 
AC0: $00 - Not used
AC1: $00 - Not used
AC2: $00 - Not used
AC3: Exceptions: $00 - Not used
Pseudo Code: 
XX 82 AC0 AC1 AC2 AC3 G0-G1 G2-G3 G4-G5 G6-G7 G8-G9 
Use KWP2000 Normal Response processing
Build Stop Communication Request as indicated in the table below 
Request 
Byte
Value 
Byte Description 

81 
Format byte for physical addressing 

## 
Global target byte 

## 
Global source byte 

82 
Stop communication request service ID

CS 
1 byte service request checksum
Calculate checksum and copy into the service request (byte 5) 
Send Stop Communication Request and get the response (up to 10 Bytes) 
Goto KWP2000 Response Processing
Look for Stop Communication positive response service ID ($C2) in goto fields 
If found
Goto appropriate step
Else 
Goto step indicated by FF goto field 
Endif
Typical Interpreter Line: (all Action and Goto fields are hex numbers) 
Step 
Op-Code 
Action Fields
Goto Fields 
01 
82 
00 00 00 00 
C2 02 FF 09 00 00 00 00 00 00 
CameraLoops.com



1993-2011 General Motors Company, GM Customer Care & Aftersales. All Rights Reserved.
Page
142 

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