2021 Jeep Grand Cherokee L 5.7L V8 Hemi MDS VVT – EZH Service and Repair Manual

This 2021 Jeep Grand Cherokee L 5.7L V8 HEMI MDS VVT (EZH) Service & Repair Manual Covers

• Complete factory workshop procedures
• Factory diagnostic information
• Component removal and installation
• Repair and overhaul procedures
• Technical specifications
• Factory maintenance schedules
• Factory wiring diagrams
• Torque specifications
• Fuse and relay information
• Diagnostic flow charts

Engine Options

• 5.7L HEMI V8 MDS VVT Petrol (EZH)

Transmission Options

• 8-speed Automatic Transmission (8HP75)

Engine and Drivetrain Repair Coverage

• Engine overhaul procedures
• Cylinder head servicing
• Timing chain inspection and replacement
• Sequential Multi-Port Fuel Injection diagnostics
• Multi-Displacement System (MDS) diagnostics
• Variable Valve Timing (VVT) diagnostics
• Ignition coil diagnostics
• Cooling system repairs
• Lubrication system servicing
• EVAP system diagnostics
• Emissions system diagnostics
• Automatic transmission diagnostics
• Automatic transmission servicing
• Transfer case servicing
• Front differential servicing
• Rear differential servicing
• Electronic Limited Slip Differential servicing
• Driveshaft servicing
• Universal joint servicing

ADAS and Safety Technologies

• Adaptive Cruise Control calibration
• Full-Speed Forward Collision Warning diagnostics
• Active Lane Management diagnostics
• Blind Spot Monitoring diagnostics
• Rear Cross Path Detection diagnostics
• ParkSense parking assist diagnostics
• ParkView reversing camera calibration
• Traffic Sign Recognition diagnostics (where equipped)
• Night Vision diagnostics (where equipped)
• Radar sensor calibration
• Forward camera alignment

4WD and AWD Technologies

• Quadra-Trac I diagnostics
• Quadra-Trac II diagnostics
• Quadra-Drive II diagnostics
• Active transfer case servicing
• Electronic Limited Slip Differential diagnostics
• Selec-Terrain system diagnostics
• Hill Descent Control diagnostics
• Front and rear differential servicing

Chassis, Steering and Suspension

• Quadra-Lift air suspension diagnostics
• Adaptive damping suspension servicing
• Front independent suspension servicing
• Rear multi-link suspension servicing
• Electric power steering diagnostics
• Steering rack servicing
• Steering column servicing
• Wheel bearing servicing
• Suspension bush inspection
• Wheel alignment specifications

Braking Systems

• Brembo brake system servicing (where equipped)
• ABS diagnostics
• Electronic Stability Control diagnostics
• Traction Control diagnostics
• Electronic Roll Mitigation diagnostics
• Brake hydraulic system bleeding
• Electronic parking brake diagnostics
• Front and rear disc brake servicing
• Wheel speed sensor diagnostics

Electrical Systems and Wiring

• Complete factory wiring diagrams
• Engine management system
• Fuel injection system wiring
• MDS control system
• VVT control system
• Charging system diagnostics
• Starting system diagnostics
• CAN FD communication network diagnostics
• Instrument cluster diagnostics
• Passive Entry diagnostics
• Keyless Enter ‘n Go diagnostics
• Uconnect 5 infotainment system wiring
• Lighting system diagnostics
• Power seat diagnostics
• Power liftgate diagnostics
• Trailer wiring diagnostics

Air Conditioning and HVAC

• Three-zone automatic climate control diagnostics
• Compressor servicing
• Refrigerant system repairs
• HVAC control module diagnostics
• Rear climate control diagnostics
• Blower motor servicing
• Air distribution system servicing

Body, Interior and Restraint Systems

• Body panel removal and installation
• Dashboard removal procedures
• Interior trim servicing
• Digital instrument cluster diagnostics
• Smart key servicing
• SRS airbag diagnostics
• Seat belt pretensioner servicing
• Power liftgate servicing
• Panoramic sunroof servicing
• Power folding seat diagnostics
• Wiper and washer system servicing

Diagnostics and Troubleshooting

• Factory diagnostic flow charts
• Symptom-based troubleshooting
• Scan tool diagnostics
• Sensor testing procedures
• Actuator testing
• CAN FD network diagnostics
• Electrical fault isolation
• ECU programming procedures
• Component inspection procedures

Common Error Codes Covered

Engine Codes

• P0016 — Crankshaft Position–Camshaft Position Correlation (Bank 1 Sensor A)
• P0300 — Random/Multiple Cylinder Misfire Detected
• P0335 — Crankshaft Position Sensor “A” Circuit
• P0520 — Engine Oil Pressure Sensor Circuit
• P06DD — Engine Oil Pressure Control Circuit Stuck Off
• P1411 — Cylinder Deactivation System Performance
• P1524 — Oil Pressure Out of Range – VVT Disabled
• P219A — Bank 1 Air/Fuel Ratio Imbalance

Transmission Codes

• P0700 — Transmission Control System Malfunction
• P0717 — Input/Turbine Speed Sensor No Signal
• P0731 — Gear 1 Incorrect Ratio
• P0740 — Torque Converter Clutch Circuit Malfunction

ABS and Chassis Codes

• C0031 — Left Front Wheel Speed Sensor Circuit
• C0034 — Right Front Wheel Speed Sensor Circuit
• C121C — Torque Request Signal Denied
• C2220 — Steering Angle Sensor Not Initialized

Network Communication Codes

• U0002 — High-Speed CAN Communication Bus Performance
• U0100 — Lost Communication With ECM/PCM
• U0121 — Lost Communication With ABS Control Module
• U0140 — Lost Communication With Body Control Module

Body Control Codes

• B1A28 — Key Fob Battery Low
• B16A7 — Power Liftgate Position Sensor Performance
• B1D98 — Power Liftgate Latch Circuit Fault

ADAS Codes

• C2502 — Forward Camera Calibration Required
• C2540 — Radar Sensor Alignment Required
• C2200 — Anti-Lock Brake Module Internal Fault

Plus many other codes included in the manual.

Fuse Box Diagram

• Power Distribution Center layout
• Interior fuse panel layout
• Rear power distribution module
• Relay locations
• Fuse identification charts
• Fuse amperage specifications
• Power distribution diagrams

Wiring Diagrams

• Engine management system
• Fuel injection system
• MDS control system
• Variable Valve Timing system
• Automatic transmission
• Quadra-Trac and Quadra-Drive systems
• Quadra-Lift air suspension
• ABS/ESC system
• Air conditioning system
• SRS airbag system
• Digital instrument cluster
• Uconnect 5 infotainment system
• Passive Entry system
• Lighting system
• CAN FD communication network
• Trailer electrical system

Serpentine Belt and Timing System Information

• Accessory drive belt routing
• Serpentine belt inspection procedures
• Serpentine belt replacement procedures
• Timing chain inspection
• Timing chain replacement procedures
• Timing chain alignment specifications

Torque Specifications

• Engine fastener torque values
• Cylinder head torque specifications
• Main bearing torque values
• Connecting rod torque values
• Transmission torque specifications
• Transfer case torque specifications
• Differential torque specifications
• Suspension torque specifications
• Steering component torque values
• Brake system torque values
• Wheel nut torque specifications

Maintenance and Service Information

• Factory scheduled maintenance intervals
• Engine oil and filter replacement
• Automatic transmission fluid servicing
• Transfer case fluid replacement
• Differential oil replacement
• Engine coolant replacement
• Brake fluid replacement
• Spark plug replacement
• Engine air filter replacement
• Cabin air filter replacement
• Drive belt inspection
• Timing chain inspection
• Tyre rotation procedures
• Wheel alignment checks

Who Is This Manual For?

• New Zealand automotive workshops
• Independent repair garages
• Automotive technicians
• 4WD specialists
• Auto electricians
• Diagnostic specialists
• Fleet maintenance teams
• DIY owners
• Automotive training institutions