2001 TOYOTA PRIUS Service Repair Manual

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Page 161 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
T6 TENSION REDUCER SOLENOID
1±GROUND : Approx. 12 volts with the ignition SW at ON position
B20 TENSION REDUCER LH
1±2 : Closed with drivers seat belt in use
: PARTS LOCATION

Page 162 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
EMPS
50A
EMPS
37. 5A
ECU±B FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2G 65A
ECU±IG
2I 2
52 3133
33A D
B E
D 5
D 2C1D7
IA2 7IM11IP13B 1B2 7 13 14
22
M2 M1 WL PIG RLYGR±G
P±B
W
W

Page 163 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
A 1A4A2A3 C 2
IO1 5
IGA AB ABAD 4D10 D 1D3D9 ID13
ID12
ID11
I 7B C E
2134
AA23 15WRL WRR TRQG TRQ2 TRQ1 TRQV PGND GR±G
P±B
WGR ±G
P±B
W
W± B
W±B W±BB G
R W
B
WGR±GP±B W±

Page 164 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
EMPS
In this system, the controller determines the direction and the amount of the assistant force based on the signals from the
vehicle speed sensor and the torque sensor that is

Page 165 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following precautionary
instructions and the procedure and precautions in the Repair

2001 PRIUS (EWD414U)
SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following precautionary
instructions and the procedure and precautions in the Repair Manual for the applicable model year.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of information
when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started after 90 seconds from when the ignition switch is turned to the ºLOCKº position and the
negative (±) terminal cable is disconnected from the battery.
(The SRS is equipped with a back±up power source so that if work is started within 90 seconds from
disconnecting the negative (±) terminal cable of the battery, the SRS may be deployed.)
When the negative (±) terminal cable is disconnected from the battery, the memory of the clock and audio system will be
canceled. So before starting work, make a record of the contents memorized in the audio memory system. When work is
finished, reset the audio systems as they were before and adjust the clock. To avoid erasing the memory in each
memory system, never use a back±up power supply from outside the vehicle.
Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during repairs.
Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner,
airbag sensor assembly or side airbag sensor directly to hot air or flames.
Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger airbag
assembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly and side airbag sensor assembly
should be inspected.
Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.
Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt
pretensioner, airbag sensor assembly or side airbag sensor assembly in order to reuse it.
If the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensor
assembly or side airbag sensor assembly has been dropped, or if there are cracks, dents or other defects in the case,
bracket or connector, replace them with new ones.
Use a volt/ohmmeter with high impedance (10 kW/V minimum) for troubleshooting the system's electrical circuits.
Information labels are attached to the periphery of the SRS components. Follow the instructions on the notices.
After work on the SRS is completed, perform the SRS warning light check.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair
Manual.

Page 166 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
SRS
C 1
D 11B 215A
AM2 1J 976AM2 AM1ACC
IG1
IG2
ST2
1 2 2 1 2 1 12
SPIRAL
CABLE B 14 B13 B10 B11 A6A5C2C1 10A
SRS ACC FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2E 4
2B 5
2E 2
B 5B6B

Page 167 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
B 20 B 9 B 26 B 1510A
ACC FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2D 2
2A 9 2B 4
2E 1
B 3
21216 13 7
FRONT AIRBAG SENSOR
RH F 2
FRONT AIRBAG SENSOR
LH F 1DATA LINK
CONNECTOR 3 D 2

Page 168 of 1943

TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
SRS
The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.
When the ignition SW is turned to ACC or ON, current from the SRS AC

2001 PRIUS (EWD414U)
SRS
The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.
When the ignition SW is turned to ACC or ON, current from the SRS ACC fuse flows to TERMINAL (B) 6 of the airbag sensor
assembly. Only when the ignition SW is on does the current flow TERMINAL (B) 5 of the airbag sensor assembly.
If an accident occurs while driving, when the frontal impact exceeds a set level, current flows to TERMINALS (B) 14, (B) 10,
(A) 2 and (C) 5 of the airbag sensor assembly to TERMINAL 1 of the airbag squibs and the pretensioners to TERMINAL 2 to
TERMINALS (B) 13, (B) 11, (A) 1 and (C) 6 of the airbag sensor assembly to TERMINAL (B) 27, (B) 28 or BODY GROUND
to GROUND, so that current flows to the front airbag squibs and the pretensioners and causes them to operate.
When the side impact also exceeds a set level, current from the ignition SW (IG2) or SRS ACC fuse flows to TERMINALS
(A) 5, (C) 2, (A) 2 and (C) 5 of the airbag sensor assembly to TERMINAL 1 of the side airbag squibs and the pretensioners to
TERMINAL 2 to TERMINALS (A) 6, (C) 1, (A) 1 and (C) 6 of the airbag sensor assembly to TERMINAL (B) 27, (B) 28 or
BODY GROUND to GROUND, causing side airbag squibs and the pretensioners to operate.
The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.
The airbag stored inside the passenger's instrument panel is instantaneously expanded to soften the shock to the front
passenger.
Side airbags are instantaneously expanded to soften the shock of side to the driver and front passenger (w/ side airbags).
The pretensioners make sure of the seat belt restrainability.
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A17A36F134J25B37
A18B36F234J2637
A19C36F12C34J27A37
A2036F13D34J28B37
A2136F1838J2937
B936H1337P1439
B2038I1537P1539
B2138J1137S439
C10A36J22A37S539
C11B36J23B37S639
D236J24A37S739
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)1J27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2A
2B
2C30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)
2D
()
2E
2G31Engine Room Main Wire and Instrument Panel J/B (Cowl Side Panel LH)
2K31Cowl Wire and Instrument Panel J/B (Cowl Side Panel LH)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IJ144Floor No.3 Wire and Instrument Panel Wire (Under the Instrument Panel Center)
IL144Instrument Panel Wire and Engine Room Main Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
ID42Cowl Side Panel LH
IH42Right Kick Panel
SYSTEM OUTLINE

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