This comprehensive wiring diagrams manual provides detailed information for the 2001 Volvo S40/V40, covering a wide range of electrical systems and components. It includes detailed diagrams and descriptions of fuses, relays, cable harnesses, and component illustrations. The manual also covers essential systems like engine management, electric cooling fan and AC compressor, cruise control, starter and charging circuits, lighting systems, warning lights, windshield and headlight wipers, horn, electronic immobilizer, anti-theft alarm, diagnostic system, seat belt reminder, instrument panel, radio, automatic transmission, and ABS system. This manual is an invaluable resource for anyone working on the electrical systems of their 2001 Volvo S40/V40, whether a professional mechanic or a DIY enthusiast.

The 2001 Volvo S40 and V40 are compact executive cars that represent a pivotal point in Volvo's history. Introduced in 1995, the first generation S40 and V40 were the Swedish automaker's first foray into the burgeoning compact premium segment, breaking away from Volvo's traditional image of large, boxy sedans and wagons. The 2001 models, being part of the first generation, still bore the signature Volvo design language, but with a more modern and refined touch. The S40 offered a sporty and practical four-door sedan configuration, while the V40, a compact wagon, presented a more versatile option for families and those needing additional cargo space. Both models aimed to attract younger, more style-conscious buyers while retaining Volvo's hallmark reputation for safety and reliability.

Under the hood, the 2001 S40 and V40 featured a range of four-cylinder gasoline engines, primarily the 1.8L and 2.0L units, paired with either a five-speed manual or a four-speed automatic transmission. These engines offered a balance of performance and fuel efficiency, making them suitable for both urban driving conditions and longer journeys. While the cars were not known for their exhilarating acceleration, they provided a comfortable and refined driving experience, true to Volvo's focus on practicality and comfort. The S40 and V40 also showcased a number of technological advancements for the time, including standard anti-lock brakes (ABS), a driver airbag, and optional features such as side airbags and a powerful audio system. The wiring diagrams for these models, therefore, are essential resources for understanding the complex electrical systems within these vehicles, facilitating repairs, upgrades, and troubleshooting.