Collection: Diagnostic Tools (67)

Truckstop Group stocks diagnostic tools for HGVs and trailers, including EBS trailer testers (Trailer Master, Sensormaster, Isomaster), Bosch KTS PC interfaces, and POWERPROBE sensor test and circuit tracer kits from Serenco UK. Purpose-built diagnostic equipment for commercial vehicle and trailer electrical system testing. Next-day UK mainland delivery or collection from our Midlands branches.

HGV diagnostic tools: what the workshop needs

Commercial vehicle diagnostics requires tools built specifically for the job. The Trailer Master and Isomaster from EBS are the clearest example: trailer ABS and EBS systems run on ISO 11992 protocols that a standard OBD reader does not cover, and the electrical characteristics of a trailer's 24V supply are different from those of the tractor unit. Testing a trailer's ABS and EBS systems correctly requires equipment designed for that purpose.

The EBS range covers the main trailer diagnostic requirements: the Trailer Master Power unit provides 24V power to a trailer independently of the tractor, allowing full electrical system testing without a coupled tractor. The Sensormaster tests ABS sensors and exciter rings directly. The Isomaster checks the ISO 7638 connector pinout for correct voltage and signal on all nine pins.

Bosch KTS PC interfaces (KTS 560 and KTS 590) provide the PC-based diagnostic gateway for multi-brand workshop use. POWERPROBE circuit tracers and sensor test lead kits from Serenco UK cover the electrical diagnostics that do not require software — continuity, short circuits, sensor supply confirmation, and circuit tracing through complex harnesses.

For tool recommendations based on your specific diagnostic requirements, call us on 01527 68279 or contact our team at https://truckstopgroup.co.uk/pages/contact.

Frequently asked questions

What is the difference between trailer ABS testing and EBS testing?

ABS on trailers uses a wheel speed sensor and modulator valve to prevent wheel lock. EBS is a more advanced system that controls braking force distribution electronically and communicates with the tractor EBS via the ISO 11992 data link. The EBS Trailer Master covers both.

Do I need a Bosch KTS interface to use ESI[tronic] software?

Yes. The Bosch KTS 560 and KTS 590 are the hardware interfaces that connect a diagnostic laptop to the vehicle's OBD or proprietary diagnostic port. The ESI[tronic] software requires the KTS interface to communicate with the vehicle's ECUs.

What does the POWERPROBE circuit tracer do?

The POWERPROBE circuit tracer identifies breaks, shorts, and routing of circuits within a wiring harness without needing access to both ends of the circuit simultaneously. It is useful for locating open circuits and shorts in trailer and vehicle wiring where the harness routing is not fully known.

What is the ISO 7638 connector on a trailer?

The ISO 7638 connector is the standardised 7-pin or 9-pin electrical connection between tractor and trailer that supplies power and data for the trailer's ABS and EBS systems. Testing the ISO 7638 pinout with the Isomaster confirms correct voltage and signal presence at the connector.

Do you sell HGV diagnostic tools near me?

Truckstop Group delivers diagnostic tools to all UK mainland addresses. Next-day delivery is available on stocked lines. Same-day collection is available from our branches in Redditch, Worcester, Birmingham, and Evesham.