Description

DAF XF105 2005 Electrical Schematic – Factory Wiring Diagrams

Got a DAF XF105 with electrical problems? You’re not alone. The wiring on these trucks is complex – multiple CAN buses, a dozen control modules, and a bodybuilder interface. Generic aftermarket diagrams will steer you wrong. This 194-page OEM manual from DAF, published in 2005, gives you the exact DAF XF105 2005 Electrical Schematic used by the factory. Every wire, connector, and module is drawn to spec. No guesswork.

Does This Manual Cover the Engine System?

Yes. Section 03 covers the DMCI (Diesel Motor Control Injection) system. The diagram on page 03C-1 shows the ECU, injectors, sensors, and all interconnections. If your XF105 won’t start or runs rough, this is where you start tracing. You’ll see supply voltages, ground paths, and CAN communication lines to the engine controller. The manual also includes the after-treatment system (EAS) in section 04 – important for DPF and SCR issues.

CAN Network Topology – 5 Bus Types

The 2005 XF105 uses five CAN networks: V-CAN1, V-CAN2, I-CAN, D-CAN, and BB-CAN. Section 02 breaks each one down. Need to see how the engine talks to the transmission? Look at V-CAN1. The K-connection topology is also included for diagnostic tools. This is critical when you’re adding aftermarket equipment – you need to know which bus to tap into without disrupting the whole network. The CAN topology section (02) is where most people get lost. Each bus has its own termination resistors and wiring colors. If you incorrectly splice into the wrong bus, you can bring down the entire network – the truck won’t start or will throw random codes. The manual gives the exact pin assignments at each ECU and the routing between modules. That’s the difference between guessing and knowing. For example, the DMCI engine controller communicates via V-CAN1. If you need to add a secondary engine brake or a remote throttle, you tap into V-CAN1 using the diagram on page 02A-1. The manual also includes the K-connection topology for the diagnostic link. This is the same data that DAF service technicians use to troubleshoot network faults. Ignore it at your own risk.

7 Systems for Braking, Retarder, and Transmission

Braking system (ABS-D and EBS-2), retarder (EST 42), and transmission (AS Tronic) are covered in sections 05, 06, and 07. Each has its own diagram with detailed pin numbers. The ABS-D diagram on 05A-1 shows wheel speed sensors, modulator valves, and the ABS controller. If you’re chasing a brake light or a retarder fault, these pages are your roadmap. The wiring for electronic braking is critical – a miswire can disable the entire trailer brake system. Get it right the first time.

Trace the Lighting System with Factory Diagrams

Exterior and interior lighting are in section 18. Driving lights, brake lights, reversing lights, fog lights, marker lights, work lights – all drawn out. The headlamp height adjustment circuit is included. For interior, there’s stepwell lighting and visibility lighting. If a trailer plug doesn’t work, the wiring is in section 18A. No need to probe blindly. Also included are rotating beacon and spotlight circuits for vocational trucks.

ABS Diagnostics: How the Schematic Helps

The ABS-D diagram (section 05A) is a standalone. It shows the power supply, ground, and each wheel sensor circuit. The EBS-2 diagram adds the electronic braking system. You can trace a fault from the ECU pin to the sensor connector. This is the same document the dealer uses. Don’t waste time with a multimeter without it. The manual also includes the retarder system (EST 42) in section 06 – essential for hill descent control troubleshooting.

Who needs this? The owner-operator who does his own electrical work, or the fleet mechanic juggling multiple XF105s. You need to know how to read a schematic – but if you do, this manual saves hours. Every connector has a number, every wire a color code. The manual lists the diagram code and revision number so you know you have the latest version. For an even deeper look at the wiring harness layouts, check the DAF XF105 Electrical system Wiring Diagram which complements this schematic.

This is a genuine DAF factory document, not a third-party reprint. The OCR excerpt shows the copyright page – ©2005 DAF Trucks N.V. The diagrams are scanned from the original. You get 194 pages of what the factory uses. Aftermarket manuals often simplify or omit circuits. This one does not. If you’re adding body equipment, the DAF LF CF XF105 2011 Bodybuilder Guidelines provides additional details for aftermarket installations. For reaction forces and mounting points, see the DAF LF, CF and XF105 2010 Bodybuilder Guidelines – Section: Reaction Form.

Safety first: Always disconnect the battery before probing connections. Use a fused test light, not a piercing probe. See the power supply and earth section (01) for battery and alternator circuits. Ground faults cause fires. The earth diagram on 01A-5 shows all chassis ground points. Torque specs for battery terminals and main ground studs matter – loose connections cause arcing. Check the OEM values in the service manual, not here.

For a general primer on reading automotive wiring diagrams, the Automotive Wiring article on Wikipedia covers the basics. Stay updated with the Automotive Industry Overview for trends in commercial vehicle electrical systems.

Frequently Asked Questions

Is this the same as a service manual?

No, it covers wiring only.

Can I use this on a 2006 XF105?

The 2005 manual covers the initial XF105 series. Later model years may have updates to the CAN network, lighting, or engine control. DAF released revised diagrams for subsequent years. Without comparing the diagram revision numbers (e.g., 1644405/07 vs /06), you risk using an outdated schematic. If your truck has a different ECU part number or additional modules, you need the specific year manual. Always cross-reference the component connections before trusting a diagram from a different year. In short, it’s better to get the exact year for your truck.

Are torque specs included?

No. This manual is for electrical diagnostics. Torque specs for engine bolts or suspension are in the service manual.

What format does the access come in?

PDF.

Access the Factory Manual from AutoRepairManuals. This PDF is royalty-free for your own use.