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Make/Model Information:

  • Brand:   Denso
  • Models included:
    • Denso Common Rail for Toyota Avensis ADT251, Engine 2AD-FHV
    • Denso Common Rail for Toyota Avensis ADT251, Engine 2AD-FTV

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   166
  • File size:  ∼ 7.50 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ENDE-0008

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Diesel Injection Pump
Common Rail System for TOYOTA AVEN-
SIS 2AD-FTV/FHV Engine
OPERATION
May, 2005
00400522E
SERVICE MANUAL
Table of Contents
Table of Contens
Operation Section
1. PRODUCT APPLICATION INFORMATION
1.1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 System Components Parts Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2. OUTLINE OF SYSTEM
2.1 Outline of Composition and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3. SUPPLY PUMP
3.1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3.2 SCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
4. RAIL
4.1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4.2 Pressure limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
5. INJECTOR
5.1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
5.2 Operation (Piezo Injector for 2AD-FHV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
6. DESCRIPTION OF CONTOROL SYSTEM COMPONENTS
6.1 ECU Connector Terminal Layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
6.2 EDU (Electronic Driving Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
7. FUEL INJECTION TIMING CONTROL
7.1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
7.2 Injection Pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
7.3 Control Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
8. DIAGNOSTIC TROUBLE CODES (DTC)
8.1 About the Codes Shown in the Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
8.2 Diagnosis Trouble Code Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
9. EXTERNAL WIRING DIAGRAM
9.1 ECU External wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Operation Section 11
1. PRODUCT APPLICATION INFORMATION
1.1 Outline
zThe common rail system installed on the TOYOTA Avensis now employs the 2AD-FHV or 2AD-FTV model engines.
For information on the basic CRS system, refer to "New Common Rail System with DPNR for TOYOTA Avensis" issued in October
2003 (Service Bulletin ECD 0302E.) Changes to old models are explained in each section.
The piezo injector newly employed in the 2AD-FHV
1.2 Application
zThe new 2AD-FHV and 2AD-FTV are employed in place of the discontinued 1CD-FTV.
zThe Avensis exhaust volume has changed from 2.0L to 2.2L.
1.3 System Components Parts Number
zBelow is a list of CRS related parts. Whether a particular part has changed or not is recorded in the "Remarks" column.
Vehicle Name Vehicle Model Engine Model Exhaust Volume Start of Production
Avensis ADT251
2AD-FHV
2.2L April, 2005
2AD-FTV
Parts Name
Parts Number
Manufacturer
Parts Number
Engine Model Remarks
Supply Pump HU294000-0301 22100-0R020-A
2AD-FHV Only
(For DPNR system)
Changed
Injector (Piezo Injector) 295900-0011 23670-26011-A New Design
Rail HU095440-0620 23810-0R020-C Replaced with
DENSO part
Discharge Valve 294290-0051 23990-30020 Changed
Engine ECU MB175800-7372 89661-05A20-0
EDU 131000-1370 89871-20070
Pc Sensor 499000-6080 89458-60010
Exhaust Fuel Addition Injector 297700-0030 23710-26010
DPNR Element 253600-0020 A9945-22013
A/F Sensor
211200-0400 89467-20060
211200-0410 89467-20070
Exhaust Gas Temperature Sensor
265600-0871 89425-20360
265600-0882 89425-20370
Differential Pressure Sensor 104990-1000 89480-20020 No Change
Operation Section 12
Supply Pump HU294000-0311 22100-0R010-A
2AD-FTV Only
Changed
Injector HU095000-5611 23670-0R010-B
Rail HU095440-0630 23810-0R010-C Replaced with
DENSO part
Pressure Limiter HU095420-0300 23280-0R010 Newly Added
Engine ECU MB175800-7382 89661-05820-0 Changed
EDU 131000-1331 89871-71010-A
Pc Sensor 499000-6120 89458-71010-A
Accelerator Position Sensor (RH) 198300-3031 89281-52011
2AD-FHV, -FTV
Accelerator Position Sensor (LH) 198300-3041 89281-52021
Coolant Temperature Sensor 179700-0451 89422-33030
Crankshaft Position Sensor 029600-1420 90919-05064
Cylinder Recognition Sensor 029600-0740 90919-05029
Turbo Pressure Sensor 079800-7800 89421-20200 Newly Added
Air Mass Flow Sensor 197400-3070 22204-0N010
EGR Valve
135000-7140 25620-0R010 Changed
135000-7160 25620-26090
Parts Name
Parts Number
Manufacturer
Parts Number
Engine Model Remarks
Diesel Injection Pump
COMMON RAIL SYSTEM (CRS)
OPERATION
September, 2007
00400534E
SERVICE MANUAL
Table of Contents
Table of Contents
Operation Section
1. GENERAL DESCRIPTION
1.1 Changes In Environment Surrounding The Diesel Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Demands On Fuel Injection System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3 Types Of And Transitions In ECD (ELECTRONICALLY CONTROLLED DIESEL) Systems . . . . . . . . . . . . . . 1-3
1.4 Common Rail System Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.5 Common Rail System And Supply Pump Transitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.6 Injector Transitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.7 Common Rail System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2. COMMON RAIL SYSTEM OUTLINE
2.1 Layout of Main Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3. SUPPLY PUMP DESCRIPTION
3.1 HP0 Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
3.2 HP2 Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
3.3 HP3 Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
3.4 HP4 Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41
4. RAIL DESCCRIPTION
4.1 Rail Functions and Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46
4.2 Component Part Construction and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46
5. INJECTOR DESCRIPTION
5.1 General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50
5.2 Injector Construction and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-51
5.3 Injector Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
5.4 Injector Actuation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
5.5 Other Injector Component Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-56
6. DESCRIPTION OF CONTROL SYSTEM COMPONENTS
6.1 Engine Control System Diagram (Reference) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-59
6.2 Engine ECU (Electronic Control Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60
6.3 EDU (Electronic Driving Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-60
6.4 Various Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-61
7. CONTROL SYSTEM
7.1 Fuel Injection Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-66
7.2 E-EGR System (Electric-Exhaust Gas Recirculation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76
7.3 Electronically Controlled Throttle (Not Made By DENSO). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-78
7.4 Exhaust Gas Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-79
7.5 DPF System (Diesel Particulate Filter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-80
7.6 DPNR SYSTEM (DIESEL PARTICULATE NOx REDUCTION). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-82
Table of Contents
8. DIAGNOSIS
8.1 Outline Of The Diagnostic Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-83
8.2 Diagnosis Inspection Using DST-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-83
8.3 Diagnosis Inspection Using The MIL (Malfunction Indicator Light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-84
8.4 Throttle Body Function Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-86
9. END OF VOLUME MATERIALS
9.1 Particulate Matter (PM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-87
9.2 Common Rail Type Fuel Injection System Development History And The World’s Manufacturers. . . . . . . . . 1-87
9.3 Higher Injection Pressure, Optimized Injection Rates, Higher Injection Timing Control Precision, Higher Injection
Quantity Control Precision. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-88
9.4 Image Of Combustion Chamber Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-90
Repair Section
1. DIESEL ENGINE MALFUNCTIONS AND DIAGNOSTIC METHODS (BASIC KNOWL-
1.1 Combustion State and Malfunction Cause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-91
1.2 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-92
2. DIAGNOSIS OVERVIEW
2.1 Diagnostic Work Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-93
2.2 Inquiries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-94
2.3 Non-Reoccurring Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-96
3. DTC READING (FOR TOYOTA VEHICLES)
3.1 DST-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-98
3.2 DTC Check (Code Reading via the DST-2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-98
3.3 DTC Memory Erasure (via the DST-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-98
4. TROUBLESHOOTING BY SYSTEM
4.1 Intake System Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-99
4.2 Fuel System Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-99
4.3 Basics of Electrical/Electronic Circuit Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-102
5. TROUBLESHOOTING
5.1 Troubleshooting According to Malfunction Symptom (for TOYOTA Vehicles). . . . . . . . . . . . . . . . . . . . . . . . 2-107
5.2 Other Malfunction Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-122
6. DIAGNOSIS CODES (DTC)
6.1 DTC Chart (Example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-124
Operation Section 114
(3) Supply Pump Component Part Functions
Feed Pump
The feed pump, which is integrated in the supply pump, draws fuel from the fuel tank and feeds it to the pump chamber
via the fuel filter. There are two types of feed pumps, the trochoid type and the vane type.
Trochoid Type
- The camshaft actuates the outer/inner rotors of the feed pump, causing them to start rotating. In accordance with
the space produced by the movement of the outer/inner rotors, the feed pump draws fuel into the suction port and
pumps fuel out the discharge port.
Vane Type
- The camshaft actuates the feed pump rotor and the vanes slide along the inner circumference of the eccentric ring.
Along with the rotation of the rotor, the pump draws fuel from the fuel tank, and discharges it to the SCV and the
pumping mechanism.
Component Parts Functions
Feed Pump Draws fuel from the fuel tank and feeds it to the pumping mechanism.
Overflow Valve Regulates the pressure of the fuel in the supply pump.
PCV (Pump Control Valve) Controls the quantity of fuel delivered to the rail.
Pumping
Mechanism
Cam Actuates the tappet.
Tappet Transmits reciprocating motion to the plunger.
Plunger Moves reciprocally to draw and compress fuel.
Delivery Valve Stops the reverse flow of fuel pumped to the rail.
Cylinder Recognition Sensor {TDC (G)
Sensor}
Identifies the engine cylinders.
To Pump Chamber
From Fuel Tank
Outer Rotor
Inner Rotor
Suction Port Discharge Port
Q000770E
Suction Port
Discharge Port
Rotor Eccentric Ring
Q000771E


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