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

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

SZ Viewer A (for Android 4.0 or newer)

SZ Viewer A1 on the Google Play Store (excluding Russia): https://play.google.com/store/apps/details?id=com.malykh.szviewer.android

Supported adapters:

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

SZ Viewer W (for Windows XP or newer)

Download W1-2022-08-17 version: sz-viewer-w1-2022-08-17.zip (45.6MB, portable ZIP-archive)

Supported adapters:

• ELM327 (v1.3 or newer) 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 newer)

Download L1-2021-11-03 version (amd64/x86_64): sz-viewer-l1-2021-11-03-amd64.tar.gz (53MB)

Supported adapters:

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

Some preparations:

• Add the user to the 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 newer)

Download M1-2021-11-29 version (x86_64): sz-viewer-m1-2021-11-29-x86_64.zip (41.9MB)

Supported adapters:

• ELM327 (v1.3 or newer) 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

Old 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.

Plain OBD II protocols are not supported by SZ Viewer. There are many other apps compatible with OBD II.

Module types

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

SZ Viewer W (for Windows), L (for Linux), M (for macOS)

SZ Viewer A (for Android)

© Anton Malykh, 2014-2022.