Knorr-bremse BH117L 2007 Diagnostics Manual – ABS6 System Guide

If you’re working on a Daewoo bus with a Knorr-bremse ABS6 system and you’re relying on generic aftermarket wiring diagrams, you’re wasting time and risking a comeback. I’ve watched techs throw money at blink codes they could decode in five minutes with the right factory documentation. This Knorr-bremse BH117L 2007 Diagnostics Manual is the exact document Knorr-Bremse Korea issued in April 2007. It’s 64 pages of OEM-specific diagnostic procedure, not a third-party reinterpretation.

Overview of the ABS6 ECU Family

Page 4 of this manual lays out the ABS6 family: Standard (basic ABS up to 4S/4M covering 80% of vehicles), Premium (6S/6M configurations with ATC and brake diagnostic), and Advanced (6S/4M with drive stability). All support 12V and 24V power supplies. If your bus uses a cab-mounted or frame-mounted ECU, this manual covers both – though Advanced is cab only. That kind of system-level clarity saves you from ordering wrong replacement ECUs.

Troubleshooting and Fault-Finding Section

The troubleshooting chapter on page 3 is where this manual earns its keep. It walks you through four diagnostic paths: blink code reading, fault code list interpretation, PC diagnostics, and workshop diagnostics. Each method is a standalone procedure. Need the exact sequence to pull a blink code? It’s in there. The manual also includes repair hints for specific ABS6 problems – not a generic flowchart but case-specific advice like what to check when the ATC light stays on after a sensor replacement.

System Components and Wiring Diagrams

Point 4 of the agenda covers system components; point 5 covers wiring diagrams. If you’ve ever tried to trace an ABS fault on a bus without factory pinouts, you know the frustration. Aftermarket wiring diagrams often combine multiple ECUs or miss ground paths. This manual gives you the OEM connector views and pin assignments for the ABS6 ECU. Without that, you’re guessing which wire is the wheel speed sensor signal return. Guessing leads to shorted circuits and replacement modules that don’t fix the problem.

3 Diagnostic Methods: Blink Code, PC, and Workshop

Three ways to get fault data, depending on what tools you’ve got. Blink code requires no scanner – just a test light or multimeter and the code list from this manual. PC diagnostics need a compatible interface and software; the manual tells you the expected communication protocol. Workshop diagnostics assume you have the factory diagnostic tool. Each method is spelled out in its own subsection. Don’t skip the blink code section because you assume it’s useless – on these older systems, blink codes can isolate a sensor fault faster than a handheld scanner can.

Why OEM Documentation Matters for ABS Diagnostics

Knorr-Bremse Korea published this in 2007 for the Daewoo bus application. That means the fault codes, component locations, and diagnostics are specific to that vehicle. Aftermarket manuals often merge data from multiple platforms and bury the BH117L-specific info in a table. Then you end up chasing a fault that doesn’t apply to your bus. This document also includes the legal disclaimer that Knorr-Bremse isn’t responsible for service errors – but that’s standard for OEM docs. The point is, they’re the ones who built the system. They wrote the repair hints. Use that.

Does this Diagnostics Manual cover the BH117L model specifically?

Yes. The cover identifies it for Daewoo Bus application with the BH117L. It’s the Knorr-bremse ABS6 Diagnostic System manual published April 2007. If you have a Daewoo bus with ABS6, this is the correct factory document.

What if I need torque specs for ABS component mounting?

This manual is diagnostic-focused – it covers fault codes, wiring, and symptom-based repair hints. For torque values on the ECU bracket or sensor bolts, you’ll want the companion service manual. The Knorr-bremse SB6 SB7 2005 Service Manual – OEM Disc Brake Specs and Knorr-Bremse Air Disc Brake 2011 Service Manual contain those mechanical specs. For TPMS-related diagnostics, see Maxitpms TS601 Diagnostics Manual – OEM TPMS & OBDII Guide.

What You Get: 64 Pages of Factory Procedure

The PDF is 64 pages including the cover and legal page. It’s not a reprint of aftermarket notes – it’s the actual OEM document from Knorr-Bremse Korea. You get the complete section on On-board Diagnostics (OBD) as it applies to the ABS6 system, plus blink code tables, fault code lists, and the wiring diagrams. No guessing. No calling the dealer. You download the file, print the pages you need, and take it to the bay. For the mechanical side of the truck, refer to Manual Transmission documentation separately. But for ABS diagnostics, this is the one.

Don’t burn billable hours chasing a code you could decode from the factory list. Download the Factory Manual now and keep it on your tablet or bench – it’s the difference between a one-hour fix and a four-hour headache.