SZ Viewer (for Android, Windows, Linux, macOS)

SZ Viewer A (for Android) - discontinued
SZ Viewer W (for Windows) - discontinued
SZ Viewer L (for Linux) - discontinued
SZ Viewer M (for macOS) - discontinued
Suzuki protocols
Module types

SZ Viewer A (for Android 4.0 or later)

SZ Viewer A1 in the Google Play Store: https://play.google.com/store/apps/details?id=com.malykh.szviewer.android (see part 1, part 2)

Supported adapters:

• ELM327 (v1.3 or later) via Bluetooth (SPP) or Wi-Fi (access point mode only).

SZ Viewer W (for Windows XP or later)

Download W1-2025-01-08 version (x86): sz-viewer-w1-2025-01-08.zip (50.3MB, portable ZIP-archive, SHA256: 3bc25f8f560f8d2f8baf20e82f623101475b1092d60077916b59522eb71f9a46)

Supported adapters:

• ELM327 (v1.3 or later) via Bluetooth (SPP), Wi-Fi (192.168.0.10:35000), USB.
• USB K-Line FTDI adapter [CAN/CAN-UDS modules are inaccessible].
• USB K-Line non-FTDI adapter with 10400 baud speed [CAN/CAN-UDS modules are inaccessible].
• VAG K+CAN "Commander" adapter.
• J2534 (PassThru) adapter (32-bit driver).

How to read raw values

Screenshot:

SZ Viewer L (for Linux, amd64/x86_64, glibc v2.12 or later)

Download L1-2025-01-08 version (amd64/x86_64): sz-viewer-l1-2025-01-08-amd64.tar.gz (44.2MB, SHA256: 0c777749fa627b6bf6e666d2b79a51eb78a9bf17ba2383b78498469346f66281)

Supported adapters:

• ELM327 (v1.3 or later) via Bluetooth (SPP), Wi-Fi (192.168.0.10:35000), USB.

Some preparations:

• Add the user to a dialout (or equivalent) group to access serial/USB devices.
• A bluetooth device should be bound to /dev/rfcommX

How to read raw values

Screeshot:

SZ Viewer M (for macOS 10.14 supporting amd64/x86_64 or later)

SZ Viewer for macOS is discontinued

Download M1-2023-12-19 version (x86_64): sz-viewer-m1-2023-12-19-x86_64.zip (42.2MB, SHA256: 00222346a438fdda1e81c6341cf7895cf44a58bbeffb101fd2f67c3e36367049)

Supported adapters:

• ELM327 (v1.3 or later) via Bluetooth (SPP), Wi-Fi (192.168.0.10:35000), USB.

Some preparations:

• To first run use Right Click ⇒ "Open" rather than double clicking on the app icon itself (limitation due to a “quarantine” attribute for downloaded archives).

How to read raw values

Screeshot:

Suzuki protocols

Aged Suzuki cars use a 12-pin ALDL-like diagnostic connector. This connector type is not supported by SZ Viewer.

Newer Suzuki cars use a standard (J1962) 16-pin OBDII connector. But applied protocols depend on the connected pins.




Pins #4, #5, #16 should be connected (their wires can be used as reference). To determine protocols check out pins #9, #7, #6 and #14:

• Pin #9: SDL protocol. This is an old-style 5V level protocol related with GM ALDL. Also modern Suzuki vehicles may use this pin to link with an immobilizer. These protocols are not supported by SZ Viewer.
• Pin #7: Suzuki K-Line (fast or 5Baud init) protocol. This protocol is supported by SZ Viewer. But sometimes K-Line is used for non-Suzuki protocols (early ISO 9141, for example) and pin #9 is present. In this case SZ Viewer is unable to connect to all or some modules.
• Pins #6 and #14: Suzuki CAN/CAN-UDS protocols. These protocols are supported by SZ Viewer (excepting some of the newest modules).

There is a little support of non-Suzuki engines (Diesels, or Gasoline GM 3.2 V6, for example) by SZ Viewer now because their modules use non-Suzuki (Renault, Peugeot, GM, FIAT, etc) protocols.

Experimental feature: plain OBD II protocols are supported by SZ Viewer for K-Line or CAN bus.

Module types

Module types supported by SZ Viewer (at least DTC reading):

© Anton Malykh, 2014-2025.