Description

Deutz BC 672, 1172 Ebr, 1172 Ebrs 2005 Electrical Schematic

Got a dead circuit on a Deutz BC 672, 1172 Ebr, or 1172 Ebrs? Tracing a short that keeps popping fuses? Electrical work without the factory diagram is how you burn a harness, blow a controller, or fry a starter. I’ve seen guys spend three hours chasing a ground that turned out to be a mislabeled aftermarket drawing. This 27-page factory electrical schematic from 2005 gives you the exact wire paths, connector pinouts, and component locations straight from Deutz. No translation errors, no redrawn lines – just the original blueprint.

Circuit Diagram Coverage: 14 Functional Groups

Sheet 001 is the overall circuit diagram – the skeleton of the whole system. Then each sheet breaks down a specific function: supply and cigarette lighter (sheet 002), starting unit and heating flange (003), rpm control Deutz EMR (004), indicators (005), monitoring and failure indication (006), driving pumps and wheel motors with starting release (007), speed ranges and brakes (008), supply controllers and warning buzzers with override (009), steering and working hydraulic system (010), horn and lubrication system and tachograph and seat adjustment (011), heating and ventilation (012), protected ventilation and cyclone separator and air conditioning (013), cabin and attachment parts (014). That’s 14 separate sheets, each with its own component references.

Does This Manual Cover the Fuel System?

No. This is an electrical schematic manual – it covers wiring, connectors, sensors, switches, controllers, and power distribution. If you need fuel injection timing or injection pump overhaul specs, that’s in a different document. But if you’re trying to figure out why the EMR controller isn’t getting power, or where the 24V supply splits off for the cigarette lighter, this is the one. Sheet 004, for example, shows the exact Deutsch EMR rpm control wiring – critical for engine speed regulation.

3 Reasons to Choose OEM Schematic Over Aftermarket

First: aftermarket diagrams often combine multiple models into one generic drawing, dropping critical wire colors or pin numbers. This manual is specific to BC 672, 1172 Ebr, and 1172 Ebrs – no extra garbage. Second: OEM documents include drawing numbers like 570 700 28 and revision dates (03.06.2005) so you know exactly what you’re working with. Third: the localization graphic on sheet 301 shows connector top views – aftermarket versions skip that, leaving you guessing which pin is which. That’s how you backfeed 24V into a 5V sensor and kill it.

Override and Warning Buzzer Circuit (Sheet 009)

Sheet 009 covers supply controllers, warning buzzers, and override. If your Deutz has an emergency shut-off switch (S01) that isn’t releasing the engine start interlock, this sheet traces the entire path – from the battery positive (G01) through the 250A fuse, through the emergency switch, to the EMR controller and the start release on sheet 007. Page 2 shows the supply points and the 28V/80A alternator output. The override circuit lets you bypass certain safety interlocks for troubleshooting – but you need the factory diagram to know which relay to jump without cooking something.

Component Listing and Connector Views (Pages 101 & 301)

Sheet 101 is the component list – every part number referenced in the diagrams. Sheet 201 shows the e-box internal layout. Sheet 301 is the localization graphic with connector top views – you’ll see exactly how the 30-pin and 8-pin connectors are oriented. For example, the X1 connector on page 2 shows pin assignments like X1:21A and X1:25A for supply lines. Without that view, you’re stabbing a multimeter probe into random holes.

This schematic matches the real harness layout. Thick lines on the drawing mean harness wires; thin lines mean printed circuit board traces. That distinction saves you from testing a PCB trace when the fault is three feet away in a corroded connector.

Audience and Real-World Use

If you’re a home garage guy trying to get a 1990s Deutz combine running again, this diagram keeps you from turning a 30-minute wire repair into a burned-up weekend. If you’re a pro mechanic billing by the hour, the time you waste on guesswork comes out of your pocket. This manual is for anyone who needs to trace a no-start that’s actually a blown fuse for the ECU supply, or a hydraulic solenoid that only works when you wiggle the harness. For beginners: you’ll learn how to read Deutsch-style schematics because the sheet organization is logical – power top, ground bottom, loads in between.

Related manuals you might also need: SAME Deutz FAHR EXPLORER3 90 & 105 2012 Operators Manual if you’re working on that series, or SAME DEUTZ FAHR 26.6 30.7 Workshop Manual for engine overhaul specs, or FAHR HD 300 Parts List for component numbers. For background on modern diesel engine electronics, read this Wikipedia article on diesel engines or this Wikipedia article on diesel engines.

What year was this schematic produced?

2005.

Can I use this manual for a Deutz 1172 Ebrs with a different cab configuration?

The schematic covers BC 672, 1172 Ebr, and 1172 Ebrs – the base electrical architecture is the same. But cab attachments like air conditioning (sheet 013) and seat heating (sheet 011) may vary by options. Sheet 014 covers cabin and attachment parts; if your machine has a different A/C unit, the cyclone separator and Klimatronik connections on sheet 013 are still valid for the main harness. The component list on sheet 101 includes the exact part numbers; cross-reference your actual parts to the drawing. If you see a discrepancy in a connector pin (e.g., X1:32E vs X1:32A), the localization graphic on sheet 301 resolves it – you physically see the connector layout. I’ve used this exact schematic on a 1172 Ebrs with a custom shelter cab; the core power and controller wiring matched perfectly.

Stop chasing electrical ghosts. Access the Factory Manual and get the wire colors, pin numbers, and component locations you need to make one clean splice instead of half a dozen guesses.