Toyota 50-4FD100 Manual page 34

1-6
SYSTEM BLOCK DIAGRAM
To each power supply of sensors
Accelerator signal 1, 2
Diagnosis switch
Neutral switch
Engine rpm sensor
Sub-engine rpm sensor
Engine lift sensor
Engine speed main sensor
Engine speed sub sensor
Boost pressure sensor
Common rail pressure sensor 1
Common rail pressure sensor 2
ACT Relay
O
U
I
T
N
P
P
U
U
T
T
Engine ECU
Water temperature sensor
P
Common rail
P
G
Engine
N
EGR valve 1 (linear solenoid)
Main Relay
Diagnosis tool
I/F
Check engine lamp
Preheat lamp
Glow relay
EGR valve 1 drive signal
Intake throttle valve drive signal
Injector drive signal
Supply pump control valve drive signal
Power supply to drive supply pump
Fuel temperature sensor (Supply pump)
Intake throttle valve
T
Intake throttle valve (Rotary solenoid)
Battery
S/P