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AsTools  |  SKU: A0141-2

Universal ELM327 (CHT340) (HS/MS-CAN Switch) | USB Interface Cable

2 reviews
€14,95 incl.
€12,36 excl.

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The Universal ELM327 (CHT340) with HS/MS-CAN switch is a USB interface cable that connects your laptop to the car via the OBD2 port. With diagnostic software such as FORScan, you can read fault codes and live data and adjust control unit settings.

The difference from a standard ELM327 is the switch on the cable. It lets you choose between HS-CAN (pins 6 and 14) and MS-CAN (pins 3 and 11). Ford and Mazda use MS-CAN for audio, climate and comfort modules, among others; without the switch, the software cannot see those modules. The CHT340 USB chip (CH340T) works under Windows with a free driver.

ADVANTAGES

✔HS- and MS-CAN — One switch for both networks.
✔Ideal for FORScan — Also Ford and Mazda comfort modules.
✔Wired via USB — Stable during coding.
✔Powered via OBD2 — No charger or battery needed.

POINTS TO NOTE

✕Manual switching — FORScan asks when you need to switch.
✕Driver required — Install the CH340 driver first.
✕Software-dependent — The software determines the functions.
✕USB only — No Bluetooth or Wi-Fi.

Applications and functionality

The cable is intended for DIY enthusiasts and workshops who want to read or code with a laptop, especially on Ford and Mazda vehicles.

Functions

  • Fault codes: Read and clear.
  • Live data: Sensor values in real time.
  • Coding: Adjust settings with FORScan.
  • MS-CAN: Access to comfort modules.

Switch

  • HS-CAN: Pins 6 and 14, e.g. engine, ABS and airbag.
  • MS-CAN: Pins 3 and 11, e.g. audio and comfort.
  • Switching: Only when the software requests it.

How to use it

  1. Install the driver: Install the CH340 driver on your Windows laptop.
  2. Connect: Plug the cable into the OBD2 port and the USB port.
  3. Select COM port: Choose the COM port in the software from Device Manager.
  4. Ignition on: Switch the ignition on and start the software.
  5. Switching: Set the switch as soon as FORScan asks you to.

Special features and capabilities

What makes this cable different from a standard ELM327:

  • Physical switch: HS-CAN and MS-CAN without soldering.
  • Wired connection: No signal drop-outs during coding.
  • Universal OBD2: Can also be used as a standard read-out cable.

Compatible software and operating systems

The cable only works with software on a PC or laptop. Known programmes:

  • FORScan: Diagnostics and coding for Ford, Mazda, Lincoln and Mercury.
  • ELMConfig: Configuration of Ford and Mazda modules.
  • Generic OBD2 software: For example ScanMaster-ELM, for standard OBD2.

Operating system: Windows, with the CH340 driver. The cable then appears as a COM port in Device Manager.

Compatible vehicles

For standard OBD2 diagnostics, the cable works on most cars with an OBD2 port: in Europe, petrol from 2001 and diesel from 2004. The switch is intended for cars with a separate MS-CAN network:

  • Ford: Models from approx. 2003–2004 with MS-CAN.
  • Mazda: Models with MS-CAN, incl. on Ford platforms.
  • Lincoln and Mercury: Models with MS-CAN.

Package contents

  • 1x Universal ELM327 (CHT340) with HS/MS-CAN switch | USB interface cable
💡
Good to know: Set the switch to HS-CAN by default. FORScan will itself ask when to switch to MS-CAN and back. If FORScan never asks you to switch, it will not search for MS-CAN modules; in that case, check the connection settings.

Technical specifications

General

The manufacturer of the interface. Universal indicates an unbranded ELM327 clone.Brand
Universeel
The chip inside the interface. A good chip ensures a stable connection and faster data.Chip
CHT340 (CH340T)

Connection

How the interface communicates with your phone, tablet or laptop: wirelessly via Bluetooth or with a USB cable.Connection to phone or PC
USB
With BLE, the interface also works with an iPhone or iPad. Without BLE, this is usually not possible.Bluetooth Low Energy (BLE)
The length of the cable. A longer cable makes it easier to place the laptop next to the car.Cable length
1.5 m

Compatibility

Which devices you can use the interface with. Pay particular attention to iOS if you have an iPhone.Operating systems
  • Windows
Which diagnostic apps and programs the interface works with. Some apps offer more, such as coding for BMW or Ford.Compatible apps
  • FORScan
  • ScanMaster-ELM
  • ELMConfig
The communication languages the interface supports. Older and American cars sometimes use protocols not every interface recognises.Protocols
  • SAE J1850 PWM/VPW
  • ISO 9141-2
  • KWP2000
A switch to toggle between two CAN networks. Required to reach all modules on Ford and Mazda with FORScan.HS-CAN and MS-CAN switch

Functions

Adjusting vehicle settings, such as enabling hidden options. Works only with apps like BimmerCode or FORScan.Coding
Resets and learning functions, such as resetting the service interval. This offers more than just reading fault codes.Service resets

Power

The voltage the interface operates on. Most are designed for 12 volt cars, not 24 volt trucks.Supply voltage
12 V
Vehicle connection
16-pin OBD2

Other specifications

Model
ELM327 (CHT340) with HS/MS-CAN switch
Type
OBD2 interface cable (USB)
PC connection
USB-A
Switch
HS-CAN (pin 6/14) / MS-CAN (pin 3/11)
Protocols
ISO 15765-4 (CAN), ISO 14230-4 (KWP2000), ISO 9141-2, SAE J1850 PWM/VPW
Power supply
Via the OBD2 port (12 V)

Reviews

5.0 ★★★★★ 2 reviews
5 ★2
4 ★0
3 ★0
2 ★0
1 ★0
★★★★★ F.J. D.

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★★★★★ SylwiaVerified buyer

Everything works perfectly !!!