Download Area

Check here for the latest software releases and Application Notes.  To download, right click the link and select 'Save Target As'.

Product Downloads

OBD Diagnostic Scanner ( Updated 12/15/2009 )

Note: If you are updating from v1, v2 , or v3, you must download and install the Full Installation Package.

User Manual
    DiagScan User Manual (updated for version 4)

Full Installation (~20 MB) (only required for first time installation)

Please Note: If you are currently having trouble with your software, uninstall your current version and re-install using the DiagScanSetupv4.2.xx full installation.  The new Windows User Access Control (UAC) has placed several access restrictions that can cause DiagScan to not operate properly.  The new installation programs will interact with the UAC to install files with the proper permissions and locate and register files properly.  The installation will no longer default to the Program Files folder since UAC restricts access to read-only and the DiagScan software must have write access to update and maintain the information databases.  The new installation location will default to C:\Bowser Electronics\DiagScan.  Download below
 

Program Update (~7 MB) (requires previous installation of version 4.2 software)  The program updates will now default to C:\Bowser Electronics\DiagScan.  Download below
 

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Windows XP, Vista, and newer users, select files from this area.

    DiagScanSetup v4.2.04  (Full Installation Package)

    DiagScanUpdate v4.2.04 (Update Only, use only if full version 4.2 previously installed)

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Windows 98 users, select files from this area.

    DiagScanSetup v4.2.04  (Full Installation Package)

    If you Win98 computer does not have the Windows Installer for Win98 you will need to download and install it before running the DiagScanSetup.

    DiagScanW98Update v4.2.04 (Update Only, use only if full version 4.2 previously installed)

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Firmware Updates  Click Here to find out more

USB Adapter Downloads

Prolific Website

Prolific USB to Serial Adapter User Manual

Prolific USB to Serial Adapter Driver for Win98 and up including XP, Vista, and Windows 7

Application Notes

AN-001 OBD-121 / ECU-121 Circuit Example
AN-002 OBD-121 Host Communication
AN-003 ECU-121 Host Communication

Microcontroller Downloads

OBD-121 Microcontroller
    OBD-121 Datasheet
    Sample Program
    Sample Program Overview
    EEPROM Configuration Program
    EEPROM Configuration Program Overview

ECU-121 Microcontroller
    ECU-121 Datasheet
    Sample Program
    Sample Program Overview

CAN ECU Simulator
    CAN-ECUSim v1.02
    CAN-ECUSim User Manual   
    CAN-ECUSim Datasheet
 

Kit Downloads

OBD/ECU Scanner Kit Documentation
    OBD/ECU Kit Instructions with Schematic / Board Layout

Copyright © 2004 [Bowser Electronics]. All rights reserved.
Revised: 12/15/09