2021 Hyundai Elantra Hybrid (1.6L GDI) Service and Repair Manual

Engine and Drivetrain

• Complete repair procedures for the 1.6L Kappa GDI (Gasoline Direct Injection) Atkinson-cycle inline 4-cylinder hybrid engine
• High-voltage electric motor housing, rotor, and stator assembly diagnostics
• Fuel injection system diagnostics and repair procedures for the high-pressure direct-injection rail
• Engine cooling system service specifications, electric water pump service, and dedicated inverter coolant loop bleeding
• Exhaust and emissions control system repairs including three-way catalytic converter and heated oxygen sensors
• Transmission overhaul and troubleshooting procedures for the fitted 6-speed EcoShift Dual-Clutch Transmission (DCT)
• Front axle shafts, constant velocity (CV) joints, and front differential service procedures

Chassis and Suspension

• Front suspension repair procedures specific to the MacPherson strut vehicle platform
• Rear suspension repair procedures specific to the multi-link independent rear suspension system utilized on hybrid variants
• Steering system diagnostics, motor-driven power steering (MDPS) calibration, and service specifications
• Wheel alignment specifications and mechanical adjustment procedures
• Front and rear wheel bearing replacement procedures
• Suspension bushing, stabilizer bar, and control arm troubleshooting

Braking Systems

• ABS diagnostic procedures and wheel speed sensor replacement
• Regenerative Braking System (RBS) calibration and integrated electronic brake actuator service
• Brake hydraulic system service specifications and master cylinder bleeding workflows
• Electronic Stability Control (ESC) and Traction Control System (TCS) diagnostics
• Parking brake service procedures for the Electric Parking Brake (EPB) configuration
• Brake component inspection, rotor machining specifications, and pad replacement procedures

Electrical and Wiring

• Complete factory wiring diagrams, low-voltage grounding points, and high-voltage circuit routing orange cabling
• High-voltage Lithium-ion polymer battery assembly isolation, removal, and safety breakdown procedures
• Hybrid Power Control Unit (HPCU), low-voltage DC-DC converter (LDC), and integrated starter-generator (HSG) diagnostics
• Body Control Module (BCM) diagnostics and programming procedures
• Power distribution profiles and fuse box schematics
• Lighting system diagnostics for projector halogen and LED headlamp assemblies
• Infotainment, navigation, and multimedia system troubleshooting for the 8-inch and 10.25-inch display screens

Air Conditioning and HVAC

• Climate control system diagnostics for manual and dual-zone automatic temperature setups
• High-voltage electric air conditioning compressor diagnostics and replacement procedures
• HVAC case blend door actuator and blower motor replacement procedures
• R-1234yf refrigerant specifications, recovery, and servicing procedures using POE non-conductive oil
• Heating and ventilation system troubleshooting

Body and Interior

• Interior trim removal and installation procedures for the redesigned cabin dashboard, center console, and door panels
• Exterior body repair information, panel alignment gaps, aerodynamic underbody panels, and bumper removal
• Door, window, smart key proximity system, and central locking system diagnostics
• Lighting system repairs
• Supplemental Restraint System (SRS) airbag component locations, sensor diagnostics, and clock spring replacement

Diagnostics and Troubleshooting

• Diagnostic Trouble Code (DTC) lookup procedures for global OBD-II protocols and hybrid-specific networks
• High-voltage system de-energizing protocols and vehicle safety inspection steps
• Manufacturer-specific scan tool procedures for Hyundai GDS systems
• Component testing specifications, hybrid sensor values, and multimeter pinout values
• Step-by-step troubleshooting workflows for intermittent wiring and CAN bus network faults
• Control module diagnostic procedures for the Engine Control Module (ECM), Transmission Control Module (TCM), and Hybrid Control Engine (HCU)

Common Error Codes Covered

Engine Codes

• P0171: System Too Lean (Bank 1)
• P0300: Random/Multiple Cylinder Misfire Detected
• P0420: Catalyst System Efficiency Below Threshold (Bank 1)
• P1B70: High Voltage Battery Low Voltage Fault
• P1B77: High Voltage Precharge Fault

Transmission Codes

• P0700: Transmission Control System Malfunction (MIL Request)
• P0882: TCM Power Input Signal Low
• P1704: Clutch 1 Engagement Fault (Dual-Clutch Transmission)

ABS and Chassis Codes

• C1200: Wheel Speed Sensor Front-LH Open or Short
• C1613: CAN Time-out ECM
• C2321: Regenerative Braking System Fluid Pressure Sensor Fault

Network Communication Codes

• U0100: Lost Communication With ECM or PCM
• U0101: Lost Communication With TCM
• U0110: Lost Communication With Drive Motor Control Module

Body Control Codes

• B1603: CAN Communication Error-BCM
• B2502: Passenger Airbag Tell-tale Indicator Error

And thousands of additional diagnostic codes, test procedures, wiring diagrams, and repair instructions.

• Professional automotive workshops
• Independent repair garages
• Mobile mechanics
• Automotive technicians
• Vehicle owners performing DIY repairs
• Automotive training institutions