1. Elm 327 Ver1.5a
2. Free Elm327 Software
3. Elm327 Interface Software

And the data sheet update has begun. Firmware version 1.4b of the ELM327 was introduced in 2010. The ELM327 v2.2 is a pin and software compatible. The ELM327 OBD2 Interface is a car diagnostic tool. Paired with the free or paid version of. ELM 327 chip. The ScanMaster - ELM software is made by a. Everything you need to know about ELM327 OBD2 car diagnostics interfaces. How do I know which software version it is? Versions 1.2a 1.4a 1.5 and 1.5a.

(Cable should NOT be connected to your laptop yet. Only connect it when instructions say so.)

Windows XP, Vista, 7:

If you bought genuine ELM327 cable from Total Car Diagnostics — then you only need to install DRIVER PACK 3. After install — go straight to Step 2 to test if it's working.

—

If you bought ELM327 cable from elsewhere (clones, eBay, other manufacturers) then install all Driver Packs below, because they cover widest range of chip makers...

• DRIVER PACK 1
  Steps to install Driver Pack 1:
  
  • If you have 64-bit Windows, double-click on: CP210xVCPInstaller_x64
  • If you have 32-bit Windows, double-click on: CP210xVCPInstaller_x86
    

That's it!

Go to Step 2 below to test if everything is working ok...

Windows 8, 10:

If you bought genuine ELM327 cable from Total Car Diagnostics here, then you only need to install DRIVER PACK 3. Then go straight to Step 2 to test it's working ok.

—

If you bought ELM327 cable from elsewhere (clones, eBay, other manufacturers) then install all Driver Packs below, because they cover widest range of chip makers...

• DRIVER PACK 1
  Steps to install Driver Pack 1:
  
  • If you have 64-bit Windows, double-click on: CP210xVCPInstaller_x64
  • If you have 32-bit Windows, double-click on: CP210xVCPInstaller_x86
    
• DRIVER PACK 4
  
• DRIVER PACK 5 ^{Most Important!}
  Steps to install Driver Pack 5:
  
  1. Please FIRST move the unextracted folder to your Desktop, else below #2 step won't show 'Install' option.
     
  2. Right-click on 'ser2pl' (icon has a little gear pic in it) and choose 'Install', as per below pic:
     
  3. Connect ELM327 cable to your laptop. Then...
     Go to: Control Panel » System » Device Manager » Ports (COM & LPT)
     You will likely see a yellow mark next to 'Prolific', like this:
     Right-click on it » Update Driver Software
     
  4. Click 'Browse my computer for driver software'.
     
  5. Select 'Let me pick from a list of device drivers on my computer'.
     
  6. UNcheck 'Show compatible hardware'.
     
  7. Select: Prolific driver version 3.3.2.102
     
  8. Install. That's it! The yellow triangle next to 'Prolific...' should be gone.

That's it!

Go to Step 2 below to test if everything is working ok...

(You can now CONNECT your ELM327 USB cable to any port on the laptop.)

Ok, we're almost ready to start scanning your vehicle.

Elm 327 Ver1.5a

First, let's ensure that everything is working fine!

Here's how...

Windows Vista/7/8/10: Control Panel » System » Device Manager

Windows XP: Control Panel » System » 'Hardware' tab » Device Manager

Notice any device with any one of the following names:

1. FT232R USB UART
2. Prolific USB-to-Serial...
3. USB Serial Port
4. USB2.0-Serial
5. Silicon Labs CP210x USB to UART Bridge

NONE of above devices should have a yellow mark () next to them.

If none of the above has a yellow mark, then congratulations! You're ready to begin scanning your car(s). Click here on how to connect to your car in the next 5 minutes...

If any one of above devices has a yellow mark, then:

1. Right-click on that device » Uninstall
2. Unplug cable
3. Restart PC
4. Download and unextract DRIVER PACK 6
5. Double-click on 'InstallUSB' to install
6. Connect cable to laptop. Yellow mark should now be gone. Success!
   If yellow mark is STILL not gone after doing 1-6 above, then do this:
   

   a) While cable is plugged in, right-click on device with the yellow mark.
   b) Click on: Update Driver Software
   c) Choose: Browser my computer for driver software
   d) Browse to and select folder where you unextracted Driver Pack 6. Make sure 'Include subfolders' is ticked ON.
   e) Click on: Next
   f) If you get RED warning, choose: Install this driver software anyway
   g) After it installs successfully, another yellow mark may appear under 'Other Device'. Eg:
   h) If g above is true, then do steps a-f for 'Unknown Device'. It may also show as 'COMx'.

Even DRIVER PACK 6 didn't help? Then likely it's a 'Code 10 error' next to 'Prolific USB-to-Serial' device. Click here to fix that.

Even 'Code 10 error' fix didn't help and yellow mark () is STILL not gone? Go to Troubleshooting below.

Step 1: Install your OBD2 software (if you don't have it — checkout TOAD OBD software). Do NOT launch it yet.

Step 2: Connect ELM327 USB to your computer and car's OBD port (usually underneat dashboard/steering wheel).

Step 3: Place the key in the ignition and turn it forward to 'ON' position. (Position where all dashboard lights are on. This is one position before engine starts.)

Step 4: Start your OBD diagnostic software. Click 'Connect', and it should auto-connect to your vehicle. That's it!

TIP: If you want maximum data reported from the car — turn on the engine.

Yes, you can safely drive the vehicle while ELM327 is plugged in and application is monitoring car's data. Keep eyes on the road at all times.

Common Solutions:

If you're unable to connect successfully to your car, then that's because of 2 reasons:

1. Your vehicle is notOBD2 compatible. (This is reason in 99% of cases, which means you can only scan it at mechanic using their $2000 OBD1 scanners.)
   
2. Random issues that can be fixed with below solutions...

Here are solutions in recommended order:

1. First check that ELM327 is physically working (not defunct). When you plug in the cable into a USB port, all the lights on ELM327 interface/device should flash. And then it'll return to 1 red light (power).
   Condition of a defunct ELM327 interface: All lights will not initially flash, and only red light will be on.
   
2. Restart computer (while keeping cable connected to laptop). Try again.
   
3. Plug USB into different physical port of your computer. Try again.
   
4. If all above solutions fail, then we will help you (only if you are Total Car Diagnostics customer). Here's all you need to do...
   

   Connect ELM327 USB cable into laptop. (Don't need to plug the other end to car)

   Step 1: Go to Control Panel.

   Windows Vista/7/8/10: Control Panel » System » Device Manager
   Windows XP: Control Panel » System » 'Hardware' tab » Device Manager

   Step 2: Expand 'Ports (COM & LPT)' and 'Other Devices'.

   Step 3: Take picture of the screen (Press 'Print Screen' key on the keyboard then paste into any graphics program. Or take shot with camera/phone.)

   Step 4:Contact us and attach the picture.

Free Software To Test If ELM327 is Working with Windows and Vehicle...

Step 1: Install EasyOBD. Do not launch it until Step 4 below.

Step 2: Connect ELM327 USB cable to laptop and car.

Step 3: Turn on car ignition. (One step before engine turns on)

Step 4: Launch EasyOBD. It will automatically connect.

If first 3 lines are GREEN (as per below pic) — then ELM327/Windows is 100% installed correctly! In which case, click here on how to connect to your car in the next 5 minutes using proper OBD-II software...

If first 3 lines are not GREEN — refer to Common Solutions above.

First 3 green lines means your ELM327 cable/Windows is properly installed.

• ELM327 AT Commands: List of commands you can manually type into OBD software terminal.

There are several types of interface. The most common use a chip made by ELM Electronics. The ELM327 is the most widely used and practical, supports all OBD protocols, i.e. KWP, PWM, VPN and CAN. The other circuits only support one protocol: The ELM320 only supports PWM; the ELM322 supports VPN and the ELM323 KWP.

Which communication for my interface?

To our knowlegde, there are 4 types of ELM327 interface:

• The ELM327 RS232 (RS or Series) : This type of output is gradually disappearing from modern PCs.
• The ELM327 USB : It requires installation of a USB driver (FTDI or Silicon Labs). Advantages: all PCs are equipped with a USB port.
• The ELM327 Bluetooth : It has the advantage of being wireless and can be used with a computer or an Android smartphone.
• The ELM327 WiFi : Its wireless connection means it can be used with a computer or a smartphone. Only the WiFi interfaces can be used with the iPhone/iPad.

Despite appearances, these 4 interfaces are practically identical, at least electronically. Only their external aspect and the connection type differ. At their heart is an ELM327 circuit. Those 4 interfaces will send back the same result during your car diagnostic.

Another thing which may be confusing is the 'firmware' version. that may vary. The official versions currently in circulation are 1.3a and 1.4b. Only very advanced users can tell the difference between a 1.3 and a 1.4 as the basic diagnostic functions are identical. On the net, you will also find version 1.5. We have bought one and can confirm that it doesn't exist! It is only a copy of version 1.2 masquerading as 1.2. Check out our tips and advice section for how to know which ELM version you have.

Free Elm327 Software

New : Elm Electronics have just released version 2.1 of their ELM327 circuit.

Elm327 Interface Software