2001 TOYOTA PRIUS O2 sensor

SS04X±12
± SERVICE SPECIFICATIONSSUSPENSION AND AXLE
SS±27
2001 PRIUS (RM778U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
FRONT AXLE
Hub nut1031,05076
Tie rod end lock nut7475055
Steering knuckle x Shock absorber1531,56011 3
Steering knuckle x Brake caliper1071,09079
Steering knuckle x Tie rod end4950036
Axle hub x Drive shaft2162,200159
Lower ball joint x Lower suspension arm1421,450105
Lower ball joint x Steering knuckle1031,05076
Steering knuckle x Dust cover8.38574 in.´lbf
ABS speed sensor set bolt8.08271 in.´lbf
FRONT SUSPENSION
Suspension support x Body3940029
Suspension support x Piston rod4747534
Flexible hose x Shock absorber2930022
ABS speed sensor wire harness x Shock absorber5.45548 in.´lbf
Lower suspension arm set bolt1371,397101
Suspension member set bolt Front side
Rear side11 3
1571,152
1,60083
11 6
Torque rod x Suspension member1001,03074
Stabilizer bar bracket x Suspension member1919414
Stabilizer bar link set nut7475555
REAR AXLE
Hub nut1031,05076
Axle hub set bolt5252538
REAR SUSPENSION
Shock absorber x Axle Beam8081659
ABS speed sensor wire harness x Axle Beam5.45548 in.´lbf
Spring bracket x Body8081659
Shock absorber center nut5657141
Parking brake cable set bolt5.45548 in.´lbf
Toe control link x Body9091866
Toe control link x Axle beam9091866
Stabilizer bar set bolt1491,51911 0

SS0LN±06
± SERVICE SPECIFICATIONSBRAKE
SS±29
2001 PRIUS (RM778U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
BRAKE PEDAL
Pedal bracket x Reinforcement1414310
Brake pedal x Pedal bracket3737527
PARKING BRAKE PEDAL
Pedal bracket x Reinforcement1414310
Pedal bracket x Body131309
Brake pedal x Pedal bracket3232724
BRAKE MASTER CYLINDER
Master cylinder x Pedal bracket131309
Master cylinder clevis lock nut2626519
HYDRAULIC BRAKE BOOSTER
Hydraulic brake booster assembly x Body1919414
Sub±bracket x Body1919414
Reservoir bracket x Body1818413
Reservoir x Bracket7.57766 in.´lbf
Accumulator x Booster pump5455036
Pressure switch assembly x Brake power supply bracket7.88069 in.´lbf
Booster pump x Brake booster pump bracket No. 27.88069 in.´lbf
Pressure switch assembly x Brake booster pump bracket No. 17.88069 in.´lbf
Connector bracket x Pressure switch assembly7.88069 in.´lbf
Pressure switch assembly x Brake booster pump bracket No. 27.88069 in.´lbf
FRONT BRAKE
Front disc brake caliper installation bolt3435025
Bleeder plug8.38574 in.´lbf
Front disc brake caliper x Flexible hose3031022
Front disc brake torque plate x Steering knuckle1071,09079
REAR BRAKE
Bleeder plug8.58775 in.´lbf
Rear drum brake wheel cylinder x Backing plate101007
BRAKE ACTUATOR
Brake actuator assembly x Body1919514
Brake actuator x Actuator bracket111208
SPEED SENSOR
Front speed sensor installation bolt8.08271 in.´lbf
Front speed sensor harness clamp bolt5.55649 in.´lbf
Rear speed sensor harness clamp bolt5.55649 in.´lbf
BRAKE LINE
Brake line union nut1515511

DI±12
± DIAGNOSTICSENGINE
2001 PRIUS (RM778U)
7. ENGINE OPERATING CONDITION
NOTICE:
The values given below for ºNormal Conditionº are representative values, so a vehicle may still be
normal even if its value varies from those listed here. So do not decide whether a part is faulty or
not solely according to the ºNormal Conditionº here.
(a) CARB mandated signals.
TOYOTA hand±held tester displayMeasurement ItemNormal Condition*
FUEL SYS #1
Fuel System Bank 1
OPEN: Air±fuel ratio feedback stopped
CLOSED: Air±fuel ratio feedback operating
Idling after warming up: CLOSED
CALC LOAD
Calculator Load:
Current intake air volume as a proportion of max.
intake air volumeIdling: 5.4 ± 19.2 %
Racing without load (2,250rpm): 6.9 ± 16.2 %
COOLANT TEMP.Engine Coolant Temp. Sensor ValueAfter warming up: 80 ± 95°C (176 ± 203°F)
SHORT FT #1Short±term Fuel Trim Bank 10 ± 20%
LONG FT #1Long±term Fuel Trim Bank 10 ± 20%
ENGINE SPDEngine SpeedIdling: 1,000 rpm
VEHICLE SPDVehicle SpeedVehicle Stopped: 0 km/h (0 mph)
IGN ADVANCEIgnition Advance:
Ignition Timing of Cylinder No. 1Idling: BTDC 7 ± 15°
INTAKE AIRIntake Air Temp. Sensor ValueEquivalent to Ambient Temp.
MAF/AFMAir Flow Rate Through Mass Flow Meter
Idling: 1.11 ± 4.38 gm/sec.
Racing without load (2,250 rpm):
3.38 ± 7.88 gm/sec.
THROTTLE POS
Voltage Output of Throttle Position Sensor
Calculated as a percentage:
0 V "0%, 5 V "100%Throttle Fully Closed: 0 ± 5 %
Throttle Fully Open: 90 ± 100 %
O2S B1, S1Voltage Output of Heated Oxygen Sensor Bank
1, Sensor 1Idling: 0.1 ± 0.9 V
O2FT B1, S1Heated Oxygen Sensor Fuel Trim Bank 1, Sen-
sor 1 (Same as SHORT FT #1)0 ± 20 %
O2S B1, S2Voltage Output of Heated Oxygen Sensor Bank
1, Sensor 2Driving at 50 km/h (31 mph): 0.1 ± 0.9 V
*: If no conditions are specifically stated for ºldlingº, it means the shift lever is at P position, the A/C switch
is OFF and all accessory switches are OFF.
(b) TOYOTA Enhanced Signals.
TOYOTA hand±held tester displayMeasurement ItemNormal Condition*
MISFIRE RPMEngine RPM for first misfire rangeMisfire 0: 0 rpm
MISFIRE LOADEngine load for first misfire rangeMisfire 0: 0 g/r
INJECTORFuel injection time for cylinder No.1Idling: 1.0 ± 3.0 ms
CYL#1, CYL#2, CYL#3, CYL#4Abnormal revolution variation for each cylinder0 %
IGNITIONTotal number of ignition for every 1,000 revolu-
tions0 ± 2,000
FUEL PUMPFuel Pump SignalIdling: ON
EVAP (PURGE) VSVEVAP VSV SignalVSV operating: ON
VAPOR PRESS VSVVapor Pressure VSV SignalVSV operating: ON
TOTAL FT B1Total Fuel Trim Bank 1: Average value for fuel
trim system of bank 1Idling: 0.8 ± 1.2 V

± DIAGNOSTICSENGINE
DI±13
2001 PRIUS (RM778U)O2 LR B1, S1 *
Heated Oxygen Sensor Lean Rich Bank 1, Sen-
sor 1 Response time for oxygen sensor output to
switch from lean to rich
Idling after warmed up: 0 ± 1,000 msec.
O2 RL B1, S1 *
Heated Oxygen Sensor Rich Lean Bank 1, Sen-
sor 1 Response time for oxygen sensor output to
switch from rich to lean
Idling after warmed up: 0 ± 1,000 msec.
*: If no conditions are specifically stated for ºldlingº, it means the shift lever is at P position, the A/C switch
is OFF and all accessory switches are OFF.

DI6UT±02
DI±14
± DIAGNOSTICSENGINE
2001 PRIUS (RM778U)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to the type of instru-
ment or other factors.
If a malfunction code is displayed during the DTC check in check mode, check the circuit for that code
listed in the table below. For details of each code, turn to the page referred to under the ''See page
'' for the respective ''DTC No.'' in the DTC chart.
When the ignition switch is ON and ºREADYº indicator light is OFF, the bulb check of the ºMILº is per-
formed (ºMILº is ON).
When ºMILº is ON, but the DTC of the engine is not memorized, it may be because of HV control system
abnormality, so check HV control system beforehand.
SAE CONTROLLED:
DTC No.Detection ItemTrouble AreaMIL*1Memory
P0100
(DI±23)Mass Air Flow Circuit Malfunc-
tionOpen or short in mass air flow meter circuit
Mass air flow meter
ECM

P0101
(DI±27)Mass Air Flow Circuit Range/
Performance ProblemMass air flow meter
P0110
(DI±28)Intake Air Temp. Circuit Malfunc-
tionOpen or short in intake air temp. sensor circuit
Intake air temp. sensor (built into mass air flow meter)
ECM

P0115
(DI±32)Engine Coolant Temp. Circuit
MalfunctionOpen or short in engine coolant temp. sensor circuit
Engine coolant temp. sensor
ECM

P0116
(DI±36)Engine Coolant Temp. Circuit
Range/Performance ProblemCooling system
Engine coolant temp. sensor
P0120
(DI±38)Throttle/Pedal Position Sensor/
Switch ºAº Circuit MalfunctionOpen or short in throttle position sensor circuit
Throttle position sensor
ECM

P0121
(DI±43)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance ProblemThrottle position sensor
ECM
P0125
(DI±44)Insufficient Coolant Temp. for
Closed Loop Fuel Control
Open or short in heated oxygen sensor (bank 1 sensor 1)
circuit
Heated oxygen sensor (bank 1 sensor 1)
Air induction system
Fuel pressure
Injector
Gas leakage on exhaust system
ECM

P0128
(DI±49)Thermostat Malfunction
Thermostat
Cooling system
Water temperature
ECM

P0130
(DI±50)Heated Oxygen Sensor Circuit
Malfunction (Bank 1 Sensor 1)
(Except Calif.)
Open or short in heated oxygen sensor circuit
Heated oxygen sensor
Air induction system
EGR system
Fuel pressure
Injector
ECM


± DIAGNOSTICSENGINE
DI±15
2001 PRIUS (RM778U)P0133
(DI±54)
Oxygen Sensor Circuit Slow Re-
sponse (Bank 1 Sensor 1)
Open or short in heated oxygen sensor circuit
Heated oxygen sensor
Air induction system
EGR system
Fuel pressure
Injector
ECM

P0135
(DI±57)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 1)Open or short in heater circuit of heated oxygen sensor
Heated oxygen sensor heater
ECM

P0136
(DI±59)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)Open or short in heated oxygen sensor circuit
Heated oxygen sensor
P0141
(DI±57)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 2)Same as DTC No. P0135
P0171
(DI±61)System too Lean (Fuel Trim)
Air induction system
Injector blockage
Mass air flow meter
Engine coolant temp. sensor
Fuel pressure
Gas leakage on exhaust system
Open or short in heated oxygen sensor (bank 1 sensor 1)
circuit
Heated oxygen sensor (bank 1 sensor 1)

P0172
(DI±61)System too Rich (Fuel Trim)
Injector leak, blockage
Mass air flow meter
Engine coolant temp. sensor
Ignition system
Fuel pressure
Gas leakage on exhaust system
Open or short in heated oxygen sensor (bank 1, 2 sensor 1)
circuit
Heated oxygen sensor (bank 1, 2 sensor 1)
ECM

P0300
(DI±65)Random/Multiple Cylinder Misfire
DetectedOpen or short in engine wire
Connector connection
Vac m hose connectionP0301
(DI±65)Cylinder 1 Misfire Detected
Vacuum hose connection
Ignition system
Injector
P0302
(DI±65)Cylinder 2 Misfire Detected
j
Fuel pressure
EGR system

Manifold absolutepressure sensor

P0303
(DI±65)Cylinder 3 Misfire Detected
Manifold absolute pressure sensor
Engine coolant temp. sensor
Compression pressure
Vl lP0304
(DI±65)Cylinder 4 Misfire Detected
Valve clearance
Valve timing
ECM
P0325
(DI±71)Knock Sensor 1 Circuit Malfunc-
tion (Bank 1)Open or short in knock sensor 1 circuit
Knock sensor 1 (looseness)
ECM

P0335
(DI±74)Crankshaft Position Sensor ºAº
Circuit Malfunction
Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Signal plate (Timing belt guide)
Crankshaft timing pulley
ECM


DI±16
± DIAGNOSTICSENGINE
2001 PRIUS (RM778U)P0340
(DI±76)
Camshaft Position Sensor Cir-
cuit Malfunction
Open or short in camshaft position sensor circuit
Camshaft position sensor
Camshaft timing pulley
ECM

P0420
(DI±78)Catalyst System Efficiency Be-
low Threshold (Bank 1)
Gas leakage on exhaust system
Open or short in heated oxygen sensor circuit
Heated oxygen sensor
Three±way catalytic converter

P0440
(DI±81)Evaporative Emission Control
System Malfunction
Hose or tube cracked, hole, damaged or loose seal
Fuel tank cap incorrectly installed
Fuel tank cap cracked or damaged
Vacuum hose cracked, hole, blocked,damaged or discon-
nected
Fuel tank cracked, hole or damaged
Charcoal canister cracked, hole or damaged
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
Fuel tank over fill check valve cracked or damaged
ECM

P0441
(DI±87)Evaporative Emission Control
System Incorrect Purge Flow
Vacuum hose cracked, hole, blocked damaged or discon-
nected
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
Open or short in VSV circuit for EVAP
VSV for EVAP
P0446
(DI±87)Evaporative Emission Control
System Vent Control Malfunction
VSV for EVAP
Open or short in VSV circuit for vapor pressure sensor
VSV for vapor pressure sensor
Charcoal canister cracked, hole or damaged
Fuel tank over fill check valve cracked or damaged
ECM
P0450
(DI±103)Evaporative Emission Control
System Pressure Sensor Mal-
function
Open or short in vapor pressure sensor circuit
V
P0451
(DI±103)Evaporative Emission Control
System Pressure Sensor Range/
PerformanceVapor pressure sensor
ECM
P0500
(DI±105)Vehicle Speed Sensor Malfunc-
tion
Combination meter
Open or short in vehicle speed sensor circuit
Vehicle speed sensor
ECM

P0505
(DI±107)Idle Control System MalfunctionErectric throttle control system
Air induction system
*1: 


MIL lights up

± DIAGNOSTICSENGINE
DI±17
2001 PRIUS (RM778U)
MANUFACTURER CONTROLLED:
DTC No.
(See Page)Detection ItemTrouble AreaMIL*1Memory
P1125
(DI±108)Throttle Control Motor Circuit
MalfunctionOpen or short in throttle control motor circuit
Throttle control motor
ECM

P1127
(DI±110)ETCS Actuator Power Source
Circuit MalfunctionOpen in ETCS power source circuit
ECM
P1128
(DI±112)Throttle Control Motor Lock Mal-
functionThrottle control motor
Throttle body
P1129
(DI±114)Electric Throttle Control System
MalfunctionElectric throttle control system
ECM
P1300
(DI±115)Igniter Circuit Malfunction (No.1)
Ignition system
Open or short in IGF1 and IGT1 circuit from No.1 ignition coil
with igniter to ECM
No.1 ignition coil with igniter
ECM

P1305
(DI±115)Igniter Circuit Malfunction (No.2)
Ignition system
Open or short in IGF2 and IGT2 circuit from No.2 ignition coil
with igniter to ECM
No.2 ignition coil with igniter
ECM

P1310
(DI±115)Igniter Circuit Malfunction (No.3)
Ignition system
Open or short in IGF2 and IGT3 circuit from No.3 ignition coil
with igniter to ECM
No.3 ignition coil with igniter
ECM

P1315
(DI±115)Igniter Circuit Malfunction (No.4)
Ignition system
Open or short in IGF1 and IGT4 circuit from No.4 ignition coil
with igniter to ECM
No.4 ignition coil with igniter
ECM

P1346
(DI±120)VVT Sensor/Camshaft Position
Sensor Circuit Range/Perfor-
mance Problem (Bank 1)Mechanical system (Jumping teeth of timing belt, belt
stretched)
ECM

P1349
(DI±121)VVT System Malfunction (Bank
1)
Valve timing
OCV
VVT controller assembly
ECM

P1430
(DI±127)Vacuum Sensor for Adsorber
and Catalyst System Circuit Mal-
functionOpen or short circuit in vacuum sensor circuit
Vacuum sensor for HC adsorber and catalyst system
ECM

P1431
(DI±131)Vacuum Sensor for Adsorber
and Catalyst System CIrcuit
Rangel Performance ProblemVacuum sensor for HC adsorber and catalyst system
Vacuum line
P1436
(DI±133)Variable Value Malfunction
Vacuum line
Actuator for HC adsorber and catalyst system
Front exhaust pipe

P1437
(DI±135)Vacuum Line Malfunction
Vacuum line
VSV for HC adsorber and catalyst system
Check valve