LAUNCH X431 Tool: Read Data Stream & DTCs on Isuzu Light Truck

This article describes how to use the LAUNCH X431 truck diagnostic tool to diagnose a 2026 Qingling Isuzu ELF KV100 Light Truck.

Supported Devices:

X431 PAD V/ PAD V Elite, PAD VII/ PAD VII Elite, PRO5 Smartlink, PRO3 V+ Elite/ PRO3S+ Elite with HD license.

Operation Procedure:

1) Connect the vehicle to the X431 diagnostic device, then manually select the vehicle model and function path: [Local Diagnose]-[Isuzu]-[Truck]

2) Access the corresponding menu based on your region and vehicle model. In this test, we will select [China And Rest Of World]-[QingLing ISUZU Series]-[Light Truck (VI)]-[Light Truck China VI (4KB1)]- and confirm the vehicle information.

3) Select [Read Fault Codes] to view the DTCs information in the vehicle’s ECU. On this interface, you can choose to generate a diagnostic report or clear the DTCs.

4) Select [Data Streams] allows us to view the data streams for each module of the vehicle. For example, clicking [DPF] , selecting all data, and then clicking [OK] will allow us to access the data.