Positioning:
The Volvo S80 was positioned as a premium mid-size luxury sedan, competing with established European and American brands. This manual targets owners and technicians requiring detailed electrical system knowledge for this specific model and year.
Competitors:
Competed against vehicles such as the BMW 5 Series, Mercedes-Benz E-Class, Audi A6, and Lexus GS.
Vehicle Attributes:
Known for its distinctive Scandinavian design, focus on safety, comfortable ride, and introduction of innovative features like the 'Side Impact Protection System' (SIPS) and 'Whiplash Protection System' (WHIPS).
Value Proposition:
Provides indispensable, factory-original electrical schematics essential for accurate diagnostics, repair, and modification of the 1999 Volvo S80's complex electronic systems.
Original Factory Source:
This is an Original Factory Wiring Diagrams download, ensuring accuracy and authenticity, which is paramount for electrical system work.
Main Coverage:
Electrical Systems and Wiring Diagrams
Specific Systems Covered:
Engine Management, Data Communication, Ignition, Relays, Fuses, Central Electronic Module (CEM), Rear Electronic Module (REM), Cable Harness Routing, Connectors, Control Modules, Ground Terminals, Engine Cooling Fan, Cruise Control, Power Supply, Starter System, Headlamp Range Adjustment, Safety Lighting, Signal Horn, Anti-theft Alarm, Immobilizer, Seat Belt Reminder, Instrument Panel, Automatic Transmissions (AW50-42, AW55-50, 4T65EV), ABS/STC/DSTC Brakes, Central Locking, Power Sunroof, Heated Seats, Power Seats, Climate Control (MCC, ECC), Additional Heater, SRS System, Garage Door Opener
Estimated Page Count:
Estimated 300-500 pages (typical for comprehensive wiring diagrams of this era)
Type:
Factory Original Wiring Diagrams Manual
Instant Access:
Instant download after payment offers immediate access to critical repair information without shipping delays or costs.
Electrical Systems:
Comprehensive coverage of all major electrical systems, including power distribution, data networks, engine controls, lighting, comfort features, safety systems, and more.
Electronic Modules:
Detailed information on the Central Electronic Module (CEM) and Rear Electronic Module (REM), which are critical distributed control units for various vehicle functions.
Lighting Systems:
Covers 'Headlamp range adjustment' and 'Safety lighting,' indicating detailed schematics for headlight operation, aiming systems, and potentially auxiliary safety lighting.
Security Systems:
Detailed coverage of 'Signal horn', 'Anti-theft alarm', and 'Immobilizer', crucial for diagnosing and repairing security system faults.
Interior Features:
Includes 'Electrically heated seats', 'Electrically operated driver’s seat', and 'Power passenger seat', providing the necessary wiring diagrams for these comfort features.
Convenience Features:
Covers 'Central locking' and 'Power sunroof', important for diagnosing and repairing common convenience system failures.
Instrumentation:
Detailed information on the 'Combined instrument panel,' essential for troubleshooting warning lights, gauges, and other dashboard functions.
Engine Management Variants:
Detailed coverage for multiple engine management system variants: Denso, ME7 (5-cylinder), and MSA 15.8, reflecting the different powertrain options available for the 1999 S80.
Comfort And Convenience:
Comprehensive coverage of comfort systems like climate control, heated/powered seats, and sunroof, alongside convenience features such as central locking and garage door openers.
Diagram Interpretation:
Detailed instructions on how to read and interpret the wiring diagrams, including understanding symbols, abbreviations, and circuit tracing.
Component Identification:
Identification and location of relays, fuses, junction points, connectors, control modules, and ground terminals.
Troubleshooting Assistance:
Provides the foundational information necessary for electrical troubleshooting by illustrating circuit paths and component connections.
Cable Harness Management:
Includes overview and routing of cable harnesses, essential for understanding vehicle wiring layout and troubleshooting physical damage or modifications.
Connector Diagrams:
Comprehensive connector overviews and details, including pin assignments, vital for diagnosing connection issues and identifying specific connectors in the vehicle.
Power Supply Circuits:
Specific coverage of 'Power supply' and 'Starter system' circuits, fundamental for diagnosing battery, charging, and starting issues.
Depth:
High. Covers detailed circuit schematics, component locations, connector pinouts, and harness routing, suitable for professional technicians and advanced DIYers.
Engine Options 1999:
Likely equipped with Volvo's inline 5-cylinder engines (e.g., 2.9L Turbocharged) and potentially V8 options for certain markets or later in the model year. This manual specifically lists Denso and ME7 engine management systems, suggesting these engine types.
Typical Horsepower:
Varies by engine, but typically ranged from approximately 200 hp to over 270 hp for turbocharged variants.
Fuel Injection:
Electronic Fuel Injection (EFI) managed by sophisticated engine control units (ECUs) indicated by 'Denso' and 'ME7' engine management system references.
Emissions Control Systems:
Covered under 'Emissions control Denso' and 'Emissions control ME7', indicating systems like secondary air injection, catalytic converters, and oxygen sensors managed by the ECU.
NHTSA Ratings Era:
Volvo's reputation for safety suggests good performance in crash tests of its era, often exceeding industry standards. Specific ratings would require consulting contemporary NHTSA reports.
Active Safety Systems:
Anti-lock Braking System (ABS) with Electronic Brake-force Distribution (EBD), Traction Control System (STC), and Dynamic Traction Control (DSTC) for enhanced stability and control.
Passive Safety Systems:
Supplemental Restraint System (SRS) including front and side airbags, SIPS, WHIPS, seat belt pre-tensioners, and a reinforced safety cage.
Srs System Detail:
The manual explicitly covers the SRS Supplemental Restraint System, indicating detailed wiring and component information for airbags and related safety electronics.
Audio System:
Optional premium audio systems from manufacturers like Dynaudio were available, with integration into the vehicle's electrical network.
Cruise Control:
The manual covers 'Cruise control,' indicating its integration within the vehicle's electronic management system.
Data Communication:
The manual lists 'Data communication,' implying coverage of vehicle networks like CAN bus or other proprietary Volvo communication protocols used for module interaction.
Climate Systems:
Coverage of Manual Climate Control (MCC) and Electronic Climate Control (ECC) indicates detailed wiring for HVAC systems, sensors, actuators, and control units.
General Intervals:
Typical intervals for Volvo models of this era: Oil changes every 7,500-10,000 miles or 12 months. Major services (e.g., timing belt replacement) at 60,000-100,000 miles depending on engine. The manual is critical for diagnosing electrical component service needs.
Engine Oil Spec:
Typically API SJ/SL, SAE 0W-30 or 5W-30 synthetic oil. Specific recommendations should be cross-referenced with a full service manual or owner's manual.
Transmission Fluid Spec:
Specific automatic transmission fluids (ATF) are required for AW50-42, AW55-50, and 4T65EV. Consult the manual or manufacturer specifications for the exact type (e.g., JWS 3309 for AW55-50).
Common Electrical Issues:
Common electrical issues on early S80s can include CEM module corrosion, ABS sensor failures, and various sensor faults related to engine management and comfort systems. This manual is vital for diagnosing these.
Ignition System Notes:
The manual's coverage of the ignition switch and relays is crucial for diagnosing starting issues or intermittent electrical faults.
