Help & Troubleshooting

Check the following if an error message displays:

❒Verify ignition key is ON — not in the ACCESSORIES position.

❒Make sure the Scan Tool cable is securely connected to the vehicle’s DLC.

❒Examine the DLC closely and check for cracked or recessed pins, or for any substance that could prevent a good electrical connection.

❒9640 works on some vehicles with J1962 that are not OBDII.

❒Test for continuity between the DLC wiring and the computer. In an extreme case, there may be a broken wire.

❒With the KOEO, check for blown fuses. The computer and DLC usually use separate fuses. If the fuse for the computer is blown, data cannot be transmitted. The fuses may be located on the fuse block in the passenger compartment.

❒Make sure the computer has a good ground. If the computer case is grounded, then clean the connection and apply a conductive (dielectric) grease to the mating surfaces.

❒With the KOEO, verify the battery voltage is at least 8.0V; the minimum voltage to power the computer.

❒As a last resort, the computer may be defective. Refer to the vehicle service manual to diagnose the computer.

BATTERY REPLACEMENT

The Scan Tool requires six (6) size-AAA alkaline batteries to operate without vehicle power. When the batteries need to be replaced, the low-battery icon () displays.

•Rechargeable batteries do not last as long alkaline types and are not recommended.

•Non-rechargeable Lithium (Li) batteries can be used. Though Lithium types last longer than the alkaline types, they are more expensive.

Follow these steps to replace the batteries:

1) Place the Scan Tool with the

SCREW

display facing down on a

 

non-abrasive surface.

 

2)Remove the battery cover screw.

3)Slide the battery cover off.

4)Remove discharged batteries and properly discard.

5)Install new batteries — note polarity.

6)Slide battery cover on.

7)Install screw — do not over- tighten.

9

COVER

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Actron 9640 user manual Battery Replacement, Check the following if an error message displays, Place the Scan Tool with
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9640 specifications

The Actron 9640 is a distinguished automotive diagnostic tool that has garnered attention for its versatility and user-friendly design. Designed for professional mechanics and DIY enthusiasts alike, the Actron 9640 stands out for its comprehensive features and advanced technologies that simplify vehicle diagnostics.

One of the main features of the Actron 9640 is its ability to read and erase diagnostic trouble codes (DTCs) for a wide variety of vehicles. This tool supports OBD II protocols, allowing it to communicate with a vast array of vehicles produced after 1996. The device provides clear, detailed descriptions of any trouble codes, enabling users to quickly identify and address issues. This is vital for efficient troubleshooting and ensures that users can make informed decisions about repairs.

Another significant advantage of the Actron 9640 is its built-in memory. The device can store code definitions and repair solutions for easy reference during diagnostics. Additionally, it features a robust data logging capability, allowing users to capture live data in real-time, which is essential for performing thorough diagnostic evaluations. This functionality helps in monitoring engine performance, thereby assisting in pinpointing issues that may not always trigger a check engine light.

The Actron 9640 also incorporates a user-friendly interface, equipped with a large LCD display that presents information in an easy-to-read format. Its intuitive navigation and menu options cater to users of varying expertise, making it accessible to beginners while still offering the depth of features that seasoned professionals rely on.

In terms of connectivity, the Actron 9640 is designed to be compatible with various vehicles, supporting multiple protocols beyond OBD II, including CAN, J1850, and ISO9141. This broad networking capability ensures that the device can diagnose problems across different car brands and models.

Built with durability in mind, the device features a robust housing that can withstand the rigors of a workshop environment. The ergonomic design ensures a comfortable grip during use, making it practical for extended periods of diagnostics.

Overall, the Actron 9640 combines advanced features, comprehensive functionality, and ease of use, making it an excellent choice for anyone looking to conduct reliable automotive diagnostics. Whether you're a professional mechanic or a casual car owner, the Actron 9640 can help you maintain your vehicle's performance effectively.
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