2001 TOYOTA PRIUS transmission oil

2001 PRIUS (EWD414U)
ENGINE CONTROL
This system utilizes an engine control module and maintains overall control of the engine, transmission and so on. An outline
of the engine control is explained here.
1. INPUT SIGNALS
(1) Engine coolant temp. signal circuit
The engine coolant temp. sensor detects the engine coolant temp. and has a built±in thermistor with a resistance which
varies according to the engine coolant temp. thus the engine coolant temp. is input in the form of a control signal into
TERMINAL THW of the engine control module.
(2) Intake air temp. signal circuit
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a
control signal into TERMINAL THA of the engine control module.
(3) Oxygen sensor signal circuit
The oxygen density in the exhaust gases is detected and input as a control signal into TERMINALS OX1A and OX1B of
the engine control module.
(4) RPM signal circuit
Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.
Camshaft position is input as a control signal to TERMINAL G2 of the engine control module, and engine RPM is input
into TERMINAL NE+.
(5) Throttle signal circuit
The throttle position sensor detects the throttle valve opening angle, which is input as a control signal into TERMINALS
VTA and VTA2 of the engine control module.
(6) Vehicle speed signal circuit
The vehicle speed signal from brake ECU, detects the vehicle speed and inputs a control signal into TERMINAL SPD of
the engine control module via the combination meter.
(7) Battery signal circuit
Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, the
voltage for engine control module start±up power supply is applied to TERMINAL +B of the engine control module via
EFI relay.
(8) Engine knock signal circuit
Engine knocking is detected by knock sensor and the signal is input into TERMINAL KNK1 of the engine control module
as a control signal.
2. CONTROL SYSTEM
*SFI system
The SFI system monitors the engine condition through the signals, which are input from each sensor to the engine
control module. The best fuel injection volume is decided based on this data and the program memorized by the engine
control module, and the control signal is output to TERMINALS #10, #20, #30 and #40 of the engine control module to
operate the injector. (Inject the fuel). The SFI system produces control of fuel injection operation by the engine control
module in response to the driving conditions.
*ESA system
The ESA system monitors the engine condition through the signals, which are input to the engine control module from
each sensor. The best ignition timing is detected according to this data and the memorized data in the engine control
module, and the control signal is output to TERMINALS IGT1, IGT2, IGT3 and IGT4. This signal controls the ignition coil
and igniter to provide the best ignition timing for the driving conditions.
*Fuel pump control system
The engine control module operation outputs to TERMINAL FC and controls the CIR OPN relay. Thus controls the fuel
pump drive speed in response to conditions.
3. DIAGNOSIS SYSTEM
With the diagnosis system, when there is a malfunctioning in the engine control module signal system, the malfunction
system is recorded in the memory. The malfunctioning system can then be found by reading the display (Code) of the
malfunction indicator lamp.
4. FAIL±SAFE SYSTEM
When a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control based
on the signals from that system, the fail±safe system either controls the system by using data (Standard values) recorded in
the engine control module memory or else stops the engine.
SYSTEM OUTLINE

CHASSIS ± P111 HYBRID TRANSAXLE
CHASSIS
182CH01
MG (Motor Generator) 2Power Splitting Device
MG (Motor Generator) 1
Transaxle Damper
Differential Oil Pump79
P111 HYBRID TRANSAXLE
DESCRIPTION
The P111 hybrid transaxle has been newly developed for the hybrid system application.
Containing a MG (Motor Generator) 2 for driving the vehicle and a MG (Motor Generator) 1 for generating
electrical power, the P111 hybrid transaxle uses a continuously variable transmission mechanism with power
splitting device that achieve smooth and quiet operation.

Specifications 
Pl t
The No. of Ring Gear Teeth78
Planetary
GearThe No. of Pinion Gear Teeth23Gear
The No. of Sun Gear Teeth30
Gear Ratio3.905
Number of Links74
ChainDrive Sprocket39
Driven Sprocket36
Counter GearDrive Gear30Counter GearDriven Gear44
Final GearDrive Gear26Final GearDriven Gear75
Fluid Capacity Liters (US qts, Imp.qts)4.6 (4.9, 4.0)
Fluid TypeATF Type T-IV or equivalent

PP3AM±01
± PREPARATIONHYBRID TRANSAXLE
PP±23
84 Author: Date:
2001 PRIUS (RM778U)
HYBRID TRANSAXLE
SST (Special Service Tools)
09308±00010Oil Seal Puller
09350±32014TOYOTA Automatic Transmission
Tool Set
(09351±32130)Handle
(09351±32150)Oil Seal Replacer
09388±40010Input Oil Seal Replacer
09527±10011Rear Axle Shaft Bearing Remover
09564±32011Differential Preload Adaptor
09608±06041Front Hub Inner Bearing Cone
Replacer
09612±30012Steering Worm Bearing Puller
09710±20011Front Suspension Bushing Tool
Set
(09710±06071)Replacer
09710±22021Front Suspension Bushing Tool
Set

± PREPARATIONHYBRID TRANSAXLE
PP±25
86 Author: Date:
2001 PRIUS (RM778U)
(09951±00460)Replacer 46
09950±60020Replacer Set No.2
(09951±00680)Replacer 68
09950±70010Handle Set
(09951±07100)Handle 100
09992±00095Automatic Transmission Oil
Pressure Gauge Set
(09992±00112)Adaptor A
(09992±00271)Gauge Assy

EM9891
± DIAGNOSTICSENGINE
DI±9
2001 PRIUS (RM778U)
3 Check air filter.
PREPARATION:
Remove the air filter.
CHECK:
Visual check that the air filter is not dirty or excessive oily.
HINT:
If necessary, clean the air filter with compressed air. First blow
from inside thoroughly, then blow from outside of the air filter.
NG Repair or replace.
OK
4 Check engine idle speed.
PREPARATION:
(a) Warm up engine to normal operating temperature.
(b) Switch off all accessories.
(c) Switch off A/C.
(d) Shift transmission into P position.
(e) Connect the TOYOTA hand±held tester or OBDII scan tool to DLC3 on the vehicle.
(f) Transit to inspection mode.
CHECK:
Use CURRENT DATA to check the idle speed.
OK:
Idle speed: 950 ± 1,050 rpm
NG Proceed to problem symptoms table on page
DI±22.
OK

A04438A13924A14466
TC
CG
A14060
DI±10
± DIAGNOSTICSENGINE
2001 PRIUS (RM778U)
5 Check ignition timing.
PREPARATION:
(a) Warm up engine to normal operating temperature.
(b) Shift transmission into P position.
(c) Keep the engine speed at idle.
(d) Using SST, connect terminals TE1 and E1 of DLC1.
SST 09843±18020
(e) Using a timing light, connect the tester to the ignition coil
connector wire (See page EM±11).
(f) Transit to inspection mode.
CHECK:
Check ignition timing.
OK:
Ignition timing: 7 ± 15° BTDC at idle
NG Proceed to page IG±1 and continue to trouble-
shoot.
OK
Proceed to problem symptoms table on page
DI±22.
6 Check fuel pressure.
PREPARATION:
(a) Be sure that enough fuel is in the tank.
(b) Connect the TOYOTA hand±held tester to the DLC3.
(c) Turn the ignition switch ON and push the TOYOTA hand±
held tester main switch ON.
(d) Use the ACTIVE TEST mode to operate the fuel pump.
(e) Please refer to the TOYOTA hand±held tester operator's
manual for further details.
(f) If you have no TOYOTA hand±held tester, connect the
positive (+) and negative (±) leads from the battery to the
fuel pump connector (See page SF±6).
CHECK:
Check for fuel pressure in the fuel inlet hose when it is pinched
off.
HINT:
At this time, you will hear a fuel flowing noise.

F12830
F12214
Matchmarks
A
B
± STEERINGTILT STEERING COLUMN
SR±7
2001 PRIUS (RM778U)
3. REMOVE LOWER INSTRUMENT FINISH PANEL
(a) Remove the 2 screws and disconnect hood lock release
lever.
(b) Remove the screw and bolt.
(c) Disconnect the connectors and DLC3, and remove the
lower instrument finish panel.
4. REMOVE UPPER AND LOWER COLUMN COVERS
(a) Remove the 3 screws and lower column cover.
(b) Remove the screw and upper column cover.
5. REMOVE COMBINATION SWITCH WITH SPIRAL
CABLE
(a) Disconnect the connectors.
(b) Disconnect the airbag connector.
(c) Remove the 3 screws and combination switch with spiral
cable.
6. REMOVE SPIRAL CABLE (See page BE±19)
NOTICE:
Do not disassemble the spiral cable or apply oil to it.
7. DISCONNECT TRANSMISSION CONTROL CABLE
8. REMOVE SHIFT LEVER ASSEMBLY
(See page HT±50)
9. DISCONNECT COLUMN HOLE COVER
Remove the 3 clips and disconnect the column hole cover.
10. REMOVE SHIFT LOCK COMPUTER SUB±ASSEMBLY
Remove the screw and shift lock computer sub±assembly.
11. DISCONNECT NO. 2 INTERMEDIATE SHAFT AS-
SEMBLY
(a) Place matchmarks on the No. 2 intermediate shaft as-
sembly and control valve shaft.
(b) Loosen the bolt ºAº and remove the bolt ºBº, then discon-
nect the No. 2 intermediate shaft assembly from the con-
trol valve shaft.
12. REMOVE INSTRUMENT FINISH PANEL
Remove the 3 screws and instrument finish panel.
13. REMOVE STEERING COLUMN ASSEMBLY
(a) Disconnect the connectors.
(b) Remove the 2 bolts, 2 nuts and steering column assem-
bly.
14. REMOVE NO. 2 INTERMEDIATE SHAFT ASSEMBLY
Remove the bolt and No. 2 intermediate shaft assembly from
the sliding yoke.
15. REMOVE SLIDING YOKE
Remove the bolt and sliding yoke from the main shaft assembly.
16. REMOVE COLUMN HOLE COVER