This highly specialized 63-page PDF file is the official Denso Common Rail System (CRS) Service Manual specifically covering the fuel injection architecture used on the Mazda CX-5’s SKYACTIV-D (EURO 6) diesel engine. Unlike a general vehicle workshop manual, this document focuses exclusively on the incredibly precise, high-pressure fuel delivery system designed by Denso. The SKYACTIV-D engine utilizes an exceptionally low compression ratio (14:1) for a diesel, which requires sophisticated fuel injection control and variable valve lift to ensure stable combustion, particularly during cold starts. This manual is an absolutely vital resource for professional diesel mechanics, advanced diagnosticians, and specialized injection shops tasked with servicing this complex powerplant.
This technical manual covers the following key engineering and diagnostic topics in detail:
- System Overview and Operations: A detailed explanation of the overall Denso CRS architecture tailored for the SKYACTIV-D engine. It breaks down the mechanical and electronic control logic required to meet stringent EURO 6 emissions standards while maintaining performance.
- Component Breakdowns: In-depth technical specifications and operational parameters for every major fuel system component. This includes detailed sections on the high-pressure supply pump, the fuel rail assembly, and the sophisticated piezoelectric fuel injectors capable of multiple, ultra-fast injection events per combustion cycle.
- Sensors and Engine Control (ECU): Comprehensive diagrams and operational logic for the various sensors that inform the Engine Control Unit. It details how the ECU monitors parameters like fuel pressure, engine speed, and exhaust gas temperatures to continuously adjust injection timing and volume.
- Diagnostic Trouble Codes (DTC) and Connector Diagrams: A crucial section for troubleshooting. It provides a comprehensive list of Diagnostic Trouble Codes (DTCs) specifically related to the Denso CRS system, paired with detailed wiring and connector diagrams to facilitate precise electrical testing and fault tracing.
Whether you are a master diesel technician diagnosing a low rail pressure code, an automotive engineer studying low-compression diesel combustion strategies, or a specialized mechanic overhauling the fuel supply system, this Denso service manual provides the exact specifications and operational logic required to service the Mazda CX-5 SKYACTIV-D engine.
CONTENTS
- 1. Introduction
- 1.1 SKYACTIV
- 1.2 SKYACTIV-D Features
- 2. Applicable Vehicles and Parts Information
- 2.1 Outline
- 2.2 Applicable Vehicles
- 2.3 List of Primary Parts
- 2.4 System Configuration
- 3. Supply Pump
- 3.1 Outline
- 3.2 Suction Control Valve (SCV)
- 4. Rail
- 4.1 Outline
- 5. Injectors
- 5.1 Outline
- 5.2 Operation
- 5.3 Injector Return Back Pressure System
- 6. Control System Parts
- 6.1 Engine ECU
- 6.2 Sensors
- 7. Fuel Injection Control
- 7.1 Injection Pattern
- 7.2 Microinjection Quantity Correction Control
- 7.3 Injector Temperature Characteristic Correction Control
- 7.4 Interval Dependence Correction
- 7.5 Exhaust Gas Recirculation (EGR) Control
- 7.6 i-stop Control
- 8. Other Controls
- 8.1 Jet Pump (4WD Only)
- 9. Exhaust Gas Treatment System
- 9.1 Diesel Particulate Filter (DPF) System
- 10. Diagnostic Trouble Codes (DTC)
- 10.1 DTC List
- 11. Wiring Diagrams
- 11.1 Engine ECU External Wiring Diagrams
- 11.2 Connector Diagrams
Language: English
Format: PDF
Pages: 63
