Injection Volume Outline of SPV
There are two types of SPV (Spill Control Valve) that control the injection volume.
Conventional type SPV
(used in axial plunger type pump)
Direct-acting type SPV
(used Read more Types of SPV (Spill Control Valve) for Diesel Engine Control System
In the conventional EFI-diesel, control of injection timing and volume is performed electronically. The device that generates the fuel pressure is the same pump used in an ordinary diesel engine.
When the malfunction code is not confirmed the DTC check and problem still can not be confirmed in the basic inspection,then proceed to this step and perform troubleshooting according to the numbered order Read more Problem Symptoms Table (for Common-rail EFI-diesel)
When the malfunction code is not confirmed by the DTC check and the problem still can not be confirmed in the basic inspection, perform troubleshooting according to the numbered order given in the table Read more Problem Symptoms Table (for Conventional EFI-diesel)
System configuration of common-rail EFI-diesel
1. Sensors
2. Actuator
3. ECU and other parts
Layout of components (1CD-FTV E/G)
1. Sensor
(1) Air flow meter
Detects the intake air volume.
(2) Read more System Configuration of Common-rail EFI-diesel
System configuration of conventional
1. Sensors
2. Actuator
3. ECU and Others
Layout of Components (1HD-FTE E/G)
1. Sensors
(1) Accelerator pedal position sensor
Detects the accelerator opening Read more System Configuration of Conventional EFI-diesel
The ECU detects the operating conditions of the engine based on the signals from various sensors. Based on this information, the ECU electrically controls the fuel injection volume and injection Read more What is EFI-diesel?
Back-up Function
The back-up function switches over to fixed signal control by the back-up IC to permit driving in cases when a malfunction occurs in the microcomputer inside the engine ECU. The back-up Read more Fail-safe and Back-up Function 2 of 2
Fail-safe Function
Purpose of the fail-safe function
If the ECU detects a malfunction in any of the input signal systems, the fail-safe function controls the engine using standard values contained in Read more Fail-safe and Back-up Function 1 of 2
DTCs are output as either 5-digit or 2-digit codes. In the Repair Manual, the detection item, detecting condition and trouble area are included for each DTC, so refer to the Repair Manual when troubleshooting.
1. Read more DTC (Diagnostic Trouble Codes) DTC Output