Vehicle Segment:
        
        
            Compact MPV (Multi-Purpose Vehicle)
        
     
    
        
            Target Demographic:
        
        
            Families seeking practicality, space, and comfort.
        
     
    
    
        
            Key Competitors Era:
        
        
            Renault Scénic, Volkswagen Touran, Ford C-Max, Opel Zafira.
        
     
    
    
        
            Design Philosophy:
        
        
            Unique and modern styling, emphasis on interior modularity and space.
        
     
    
        
            Innovations:
        
        
            Panoramic windscreen, split-folding rear seats, integrated air freshener (Aroma, in some trims).
        
     
    
        
            Manual Utility:
        
        
            Indispensable tool for diagnosing and repairing complex electrical issues in the C4 Picasso.
        
     
 
    
    
    
        
            Powertrain Electrical:
        
        
            Engine Control Module (ECM) wiring, fuel injection, ignition system, exhaust gas recirculation (EGR), diesel particulate filter (DPF) management, starter, alternator.
        
     
    
        
            Chassis Electrical:
        
        
            Anti-lock Braking System (ABS), Electronic Stability Program (ESP), power steering, suspension control (if applicable), lighting circuits (headlights, taillights, interior), horn.
        
     
    
        
            Body Electrical:
        
        
            Central locking, power windows, power mirrors, wipers, washers, interior lighting, exterior lighting, door modules, tailgate operation.
        
     
    
        
            Comfort And Convenience:
        
        
            Climate control (HVAC) wiring, heated seats, air conditioning compressor control, infotainment system wiring, navigation system wiring, parking sensors, reversing camera.
        
     
    
        
            Safety Systems:
        
        
            Airbag system wiring, seatbelt pre-tensioners, tire pressure monitoring system (TPMS), alarm system.
        
     
    
        
            Lighting And Signals:
        
        
            Headlight circuits (low beam, high beam, DRLs), taillight circuits, brake lights, turn signals, hazard lights, fog lights, reversing lights, license plate lights.
        
     
    
        
            Instrumentation And Gauges:
        
        
            Dashboard illumination, speedometer, tachometer, fuel gauge, coolant temperature gauge, warning lights, multi-function display (MFD).
        
     
    
        
            Battery And Charging:
        
        
            Battery connections, alternator charging circuit, fuse box locations and functions, relay functions.
        
     
    
    
        
            Component Location:
        
        
            Identification of electrical components, connectors, fuses, relays, and grounds within the vehicle.
        
     
    
        
            Circuit Tracing:
        
        
            Detailed path tracing of electrical circuits for diagnosis and troubleshooting.
        
     
    
        
            Connector Pinouts:
        
        
            Detailed pinout information for various electrical connectors throughout the vehicle.
        
     
    
        
            Fuse And Relay Identification:
        
        
            Identification and function of all fuses and relays, including their amperage ratings and circuit assignments.
        
     
    
        
            Ground Point Identification:
        
        
            Location and identification of chassis and body ground points.
        
     
    
        
            Wiring Color Codes:
        
        
            Standardized wiring color coding for easy identification of wires within harnesses.
        
     
    
        
            Troubleshooting Guidance:
        
        
            Although not a primary diagnostic manual, wiring diagrams are essential for effective electrical troubleshooting.
        
     
    
        
            System Diagrams:
        
        
            Comprehensive diagrams for each major electrical system.
        
     
    
    
        
            Depth Level:
        
        
            Highly Detailed - Comprehensive electrical system coverage.
        
     
    
        
            Target Audience:
        
        
            Automotive Technicians, Service Professionals, Advanced DIYers.
        
     
    
        
            Diagnostic Support:
        
        
            Provides the foundational data required for advanced diagnostic scan tools and procedures.
        
     
 
    
    
    
        
            Engine Options Second Gen:
        
        
            1.2 PureTech (petrol), 1.6 HDi / BlueHDi (diesel), 1.6 THP (petrol), 2.0 BlueHDi (diesel).
        
     
    
    
        
            Example Engine 1 6 Bluehdi 100:
        
        
            Power: 99 PS (98 bhp; 73 kW), Torque: 254 Nm (187 lb-ft).
        
     
    
        
            Example Engine 1 2 Puretech 130:
        
        
            Power: 130 PS (128 bhp; 96 kW), Torque: 230 Nm (170 lb-ft).
        
     
    
    
        
            Fuel Delivery Petrol:
        
        
            Multi-point fuel injection (MPI) for 1.2 PureTech (older versions), Direct Injection (GDI) for PureTech and THP.
        
     
    
        
            Fuel Delivery Diesel:
        
        
            Common Rail Direct Injection (CRDi) with turbocharging.
        
     
 
    
    
    
        
            Length Grand C4 Picasso 2Nd Gen:
        
        
            4597 mm (181.0 in)
        
     
    
        
            Width Grand C4 Picasso 2Nd Gen:
        
        
            1826 mm (71.9 in) without mirrors
        
     
    
        
            Height Grand C4 Picasso 2Nd Gen:
        
        
            1638 mm (64.5 in)
        
     
    
    
        
            Seating Capacity:
        
        
            7 Seats (with 3 individual sliding/folding rear seats and 2 fold-away third-row seats)
        
     
    
    
        
            Luggage Capacity 5 Seats:
        
        
            Approximately 645 liters (behind second row).
        
     
    
    
        
            Curb Weight Example:
        
        
            Approx. 1400-1600 kg depending on engine and specification.
        
     
 
    
    
    
        
            Euro Ncap Rating:
        
        
            5 Stars (for the second generation)
        
     
    
    
        
            Electronic Stability Program:
        
        
            Standard (ESP) with ASR (Traction Control) and Hill Start Assist.
        
     
    
        
            Braking Assistance:
        
        
            ABS with EBD (Electronic Brakeforce Distribution) and EBA (Emergency Brake Assist).
        
     
    
    
        
            Airbags:
        
        
            Front, side, and curtain airbags (up to 7).
        
     
    
        
            Seatbelts:
        
        
            3-point seatbelts with force limiters and pre-tensioners.
        
     
 
    
    
    
        
            Central Display:
        
        
            7-inch touchscreen interface controlling infotainment, climate control, and vehicle settings.
        
     
    
        
            Connectivity Options:
        
        
            Bluetooth, USB, AUX input, optional DAB digital radio, satellite navigation.
        
     
    
    
        
            Advanced Driver Assistance Systems:
        
        
            Available features include adaptive cruise control, lane departure warning, blind-spot monitoring, active city brake.
        
     
    
        
            Parking Assistance:
        
        
            Front and rear parking sensors, Park Assist (automated parking).
        
     
    
    
        
            Connected Services:
        
        
            MyCitroën app integration for vehicle status and remote services (depending on model year and market).
        
     
 
    
    
    
        
            Oil Change Interval Petrol:
        
        
            Typically 20,000 km or 1 year, whichever comes first (subject to driving conditions).
        
     
    
        
            Oil Change Interval Diesel:
        
        
            Typically 25,000 km or 2 years, whichever comes first (for BlueHDi engines, subject to driving conditions).
        
     
    
        
            Timing Belt Replacement:
        
        
            For PureTech 1.2 engines, often recommended at 100,000-120,000 km or 5-6 years due to potential issues with the wet belt. For diesel engines, timing belts are generally robust with intervals around 150,000-180,000 km or 10 years.
        
     
    
    
        
            Engine Oil Specification:
        
        
            Varies by engine. Common specs include PSA B71 2312 (e.g., for 1.6 BlueHDi), PSA B71 2302/2296 (for PureTech).
        
     
    
        
            Coolant Specification:
        
        
            PSA specific long-life coolant (typically blue or pink).
        
     
    
        
            Brake Fluid Specification:
        
        
            DOT 4.
        
     
    
        
            Transmission Fluid Manual:
        
        
            GL-4 Specification Gear Oil (e.g., 75W-80).
        
     
    
        
            Transmission Fluid Automatic:
        
        
            ATF (Automatic Transmission Fluid) specific to EAT6/EAT8, typically LT 71141 or equivalent.
        
     
    
    
        
            1 6 Hdi Dpf Problems:
        
        
            Diesel Particulate Filter (DPF) clogging can occur with frequent short journeys. Requires regular highway driving or professional cleaning.
        
     
    
        
            Egs Transmission Quirks:
        
        
            The EGS automated manual can be hesitant and jerky, requiring a different driving technique. Can also be prone to clutch wear.
        
     
    
        
            Puretech Timing Belt:
        
        
            The wet timing belt on the 1.2 PureTech engines can degrade prematurely, leading to potential engine damage if not replaced at recommended intervals.
        
     
    
        
            Electrical Gremlins:
        
        
            As with many modern vehicles, complex electrical systems can sometimes exhibit minor faults or warning lights, often requiring diagnostic tools and wiring diagrams for resolution.
        
     
 
    
    
    
        
            Citroen Legacy:
        
        
            Known for innovation, comfort, and distinctive design (e.g., DS, 2CV, XM).
        
     
    
    
        
            First Generation C4 Picasso:
        
        
            Launched in 2006, based on the C4 platform, distinguished by its bold design and spacious interior.
        
     
    
        
            Second Generation C4 Picasso:
        
        
            Introduced in 2013 as the C4 Picasso, later renamed Grand C4 Picasso in some markets to differentiate from the shorter C4 Cactus. Based on the PSA EMP2 platform. Features a more contemporary design and improved efficiency.
        
     
    
    
        
            Manufacturing Plant:
        
        
            Vigo, Spain.