Description

DAF SB 220 GS SF CK22P Wiring Diagram – Factory Specs for Your Workshop

If you’re tracing a wire on a DAF SB 220 GS SF CK22P bus and the colors don’t match a generic diagram, you know the frustration. I’ve been there—chasing a ghost because some aftermarket schematic had the pinout swapped. This Wiring Diagram is the exact OEM drawing used on the production line. It’s not a reprint or a copy. It’s the original DAF schematic, sheets 1 through 26, with revision history included. At 29 pages, it covers every circuit from main power to body builder connections.

What the 29 Pages Cover

The page index lists every major system. You get the main circuit, switch contacts, generator and D+ circuit, glow circuit, starter motor and stop circuit. Then come auxiliary systems: sump topping up, direction indication, wiper/washer, horn, sight, tachograph. Ground points and diagnose parts of SWS are on page 9. Instrument panel with gauges and illumination switches on page 10. The brake circuit and reverse circuit are on page 12. ABS/EBS is page 13. Speedometer and GB-prop on page 14. EGAS 3 on page 15. Two gearbox options—ZF EST18 and Voith DIWA 3—are covered. Voith/Haldex brake circuit page 18. CWD X36 assembly and engine protection system page 19. Engine compartment safety and kneeling control page 20. ECAS 2 for 4×2 LHD/RHD page 21. Central lubricating release and air dryer page 22. Body builder sections pages 23-26. Nothing is left out.

Brake and ABS Circuits: Critical Diagnostics

Every bus tech knows that brake circuits and ABS wiring are where mistakes kill you—literally. Page 12 shows the exact brake circuit connections, including the reverse circuit interface. Page 13 covers ABS/EBS with controller pinouts and chassis connectors like AB45 and AB46 (30-pin ABS chassis white and black). I’ve used this diagram to isolate a broken wire at the chassis connector that aftermarket diagrams didn’t even list. Without it, you’re guessing which wire goes to the ABS modulator. With it, you measure continuity at connector C30P or AB45 and find the fault in minutes.

Why Factory Wiring Diagrams Beat Aftermarket Copies

Aftermarket diagrams often combine multiple years or strip out revision notes. This DAF print includes the modification history—two changes listed on page 2 (new direction indication unit and sump topping up electrical diagram change). That matters because a wire added in revision 01 might not exist on earlier builds. The factory drawing also uses the original DAF part numbers for connectors (e.g., B6P body builder rear black, C40P chassis yellow, DAGP diagnose black). If you need to order a replacement connector, the number is right there. No translation errors, no guesswork.

Does This Wiring Diagram Cover the Complete Bus Electrical System?

Yes. From the engine compartment (page 19) to the body builder rear and diagnose (page 26), every subsystem is represented. The DAF SB 220 GS SF CK22P is a conventional bus chassis, and this diagram integrates all optional equipment: EGAS 3 electronic throttle, ZF or Voith gearboxes, ECAS air suspension, central lubricating, and even the kneeling control. Body builder connections are clearly marked so you can interface with aftermarket bodywork without shorting the chassis. The only thing not included is component-level repair procedures—that’s a separate service manual. But for wiring, this is the definitive source.

3 Systems That Will Save You Diagnostic Time

First, the SWS diagnosis page (8) shows ground points and the SWS module. Second, EGAS 3 (page 15) gives the full pedal and actuator wiring—critical for drive-by-wire troubleshooting. Third, the central lubricating release and air dryer circuit (page 22) is often overlooked but causes no-start conditions when the solenoid valve wiring fails. Having these three on paper means you don’t need to scroll through a tablet while holding a test light. Print the pages you need and tape them to the windshield.

Frequently Asked Questions

Is this the actual factory document or a reproduction?

It’s the original OEM drawing from DAF, released for production. The PDF scans the exact plotting from DAF’s AutoCAD file (sheet 1-26, drawing issue DWQ 1140637/01).

Can I use this to diagnose ABS faults?

Yes. The ABS/EBS page (13) shows every connection to the controller—power, ground, wheel speed sensors, and diagnostic lines. The diagram also lists connector pin assignments for the 30-pin ABS chassis connectors (AB45 white, AB46 black). If you have an intermittent ABS light, start by back-probing those connectors with the key on. Compare voltages to the factory values. Without this diagram, you’d be chasing non-existent codes. I’ve solved three bus ABS faults this year using factory wiring schematics like this one.

Related manuals for other DAF models: DAF 210 220 2008 Wiring Diagram”>DAF 210 220 2008 Wiring Diagram, DAF XF CF Wiring Diagram”>DAF XF CF Wiring Diagram, and DAF XF105 Electrical system Wiring Diagram”>DAF XF105 Electrical system Wiring Diagram. For general automotive wiring principles, Automotive Wiring”>Automotive Wiring references can help, but nothing beats the factory diagram for this specific bus. The Automotive Industry Overview”>Automotive Industry Overview shows why OEM documentation remains the standard for professional repair.

Don’t trust a wiring job to a third-party sketch. Access the Factory Manual and get the real DAF data on your bench.