Description

Liebherr LICCON 1 Diagnostics Manual – What You Get

If you’ve ever been stuck diagnosing a crane that won’t respond to the control inputs, and the aftermarket CD you bought is full of generic wiring diagrams that don’t match, you know the frustration. This Liebherr LICCON 1 Diagnostics Manual is the factory document that came with the machine. It’s not a reprint or a translation of something else – it’s the original instruction manual for diagnosis, in Spanish/English combined. The manual covers 190 pages of procedures that start with the bus system and run through every test terminal and tele-diagnosis option Liebherr engineered. I’ve seen shops waste a full day chasing a CAN bus fault because they didn’t have the right bus termination data – this manual gives you the exact network layout.

Bus System Global Overview – Where the Diagnosis Starts

Section 20.01 gives you the global view of the bus system. You get a block diagram of how the LICCON computer, the BTT terminal, the BSE test system, and the tele-diagnosis module all talk to each other. This is the map you need before you start probing wires. Without it, you’re guessing which controller is the master. The manual doesn’t assume you know the topology – it shows you.

LICCON Computer System Fault Detection – Section 20.05

This is the heart of the diagnosis. The manual walks you through power-up self-tests, fault code reading, and component isolation. It tells you what each LED on the LICCON computer means – no vague descriptions. If the red LED flashes twice, you know exactly which sub-system failed. The OCR excerpt shows the manual uses signal words PELIGRO, ADVERTENCIA, ATENCIÓN, AVISO – you get the same safety warnings the original operators got. Page 3 spells out the definitions in clear terms: PELIGRO means death or serious injury if not avoided.

Bluetooth Test Terminal (BTT): System Diagnosis and Fault Transmission

The BTT system is covered in section 20.09. You get the control test procedure, fault detection for the BTT itself, fault information, adjustments, and how to transmit fault messages to the BSE test system. There’s even a subsection for disfunctions in the BTT control elements and remote control (BTT-E). This level of detail is what you pay for – it’s not a generic “test with a multimeter” instruction. It tells you which menu to enter, what values to expect, and what to do if they’re wrong.

BSE Test System – Multi-UC Control and Tele-Diagnosis

Section 20.10 covers the BSE test system via the Multi-UC control interface. Then section 20.15 goes into tele-diagnosis. I’ve had to remote-diagnose a job site 200 miles away – having the tele-diagnosis procedure from the factory manual saved a service truck run. The manual explains how to set up the connection and interpret the data recorder logs. The preface on page 2 mentions that the data recorder stores date, time, actual load, load capacity percentage, boom angle, telescope lengths, and every override activation. That data is readable with the right software – this manual helps you understand what it means.

Disc Brake Lining Diagnosis and Trailing Axle Checks

The manual doesn’t ignore mechanical safety either. Sections 20.20 and 20.25 cover diagnosis of the disc brake linings and the trailing axle. For a crane that spends its life on construction sites, these checks are critical. Brake lining wear can cause a failure on a grade, and the trailing axle alignment affects tire life and stability. The factory procedure gives you the correct measurement points and wear limits – aftermarket manuals skip these because they don’t have the engineering data.

3 Critical Safety Warnings You Cannot Ignore

The manual opens with three signal-word levels: PELIGRO, ADVERTENCIA, and ATENCIÓN. Page 3 defines each one, and these appear throughout the document. If you see PELIGRO, you stop and fix the condition before proceeding. This is OEM safety engineering, not a lawyer’s disclaimer. Ignoring them on a crane can kill someone.

What Makes This OEM Manual Different from Aftermarket?

Aftermarket diagnosis guides for LICCON 1 systems are often compiled from operator handbooks and forum posts. They don’t have the bus termination specs, the exact BTT menu sequences, or the tele-diagnosis password procedures. This manual comes from Liebherr’s own documentation – the same one that shipped with the crane. If you need to verify a fault code against factory data, you have the original source. The related manuals for other Liebherr models are equally specific: the Liebherr LTM 1090/3 Diagnostics Manual – 106-Page Factory Test Program Guide covers a different control version; the Liebherr LTM 1090-4.1 2010 Diagnostics Manual – Factory Error Code Guide is essential if you work on that generation; and the Liebherr LTM 1090/3 Diagnostics Manual – 135-Page Factory Test Program gives you more depth on test programs. All factory prints, all with the same level of detail.

Frequently Asked Questions

Is this manual in English or Spanish?

The manual is bilingual – Spanish and English combined. The table of contents and main headings are in Spanish, but the procedures include English terms where appropriate. If you read Spanish, you’ll have full comprehension; if not, the wire colors, pin numbers, and fault codes are universal.

Does it cover the LICCON 2 system?

No. This is specific to LICCON 1. LICCON 2 has different bus architecture and test menus. Check the model number on your crane’s controller before buying. The related LTM manuals listed above might help if you have a later system.

Can I use this manual for non-Liebherr equipment?

No. The LICCON 1 system is proprietary to Liebherr. The bus topology and test procedures are designed for their cranes. Using it on other brands could mislead you. Stick to the manufacturer-specific documentation.

Why are there safety warnings in Spanish?

The original crane was delivered to a Spanish-speaking market. The signal words PELIGRO, ADVERTENCIA, ATENCIÓN, and AVISO are defined on page 3 and are exactly the same level of warning as the English versions. A professional mechanic understands these regardless of language.

You’ve seen enough aftermarket junk that leaves out the critical steps. This manual is the real thing – factory printed, 190 pages of diagnosis procedures from Liebherr-Werk Ehingen GmbH. Whether you’re working on the bus system, the BTT terminal, or the tele-diagnosis link, the data is here. The On-board Diagnostics (OBD) systems in cars have standards; this manual defines the proprietary diagnostic interface for Liebherr cranes. If you need to troubleshoot a manual transmission, that’s a different book – this is for the electronic control systems. Access the Factory Manual now and get the exact procedures Liebherr expects you to follow.