cooling TOYOTA PRIUS 2001 Service Owner's Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: PRIUS, Model: TOYOTA PRIUS 2001Pages: 1943, PDF Size: 18.26 MB
Page 589 of 1943
SS176±03
SS±14
± SERVICE SPECIFICATIONSCOOLING
136 Author: Date:
2001 PRIUS (RM778U)
COOLING
SERVICE DATA
Drive beltTension (Reference) New belt
Used belt110 ± 11 lbf
67 ± 10 lbf
ThermostatValve opening temperature
at 90°C (199°F)80.0 ± 84.0°C (176 ± 183°F)
8.5 mm (0.345 in.) or more
Radiator capRelief valve opening pressure STD
Minimum74 ± 103 kPa (0.75 ± 1.05 kgf/cm2, 10.7 ± 14.9 psi)
79 kPa (0.8kgf/cm2, 11.5 psi)
Electric
cooling fanAmperage STD9.2 ± 11.0 A
Page 590 of 1943
SS177±02
± SERVICE SPECIFICATIONSCOOLING
SS±15
2001 PRIUS (RM778U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Drain plug12.71309
Water pump x Timing chain cover1111 08
Pump pulley x Water pump1515011
Water inlet x Cylinder block9.09080 in.´lbf
Electric cooling fan assembly x Radiator7.57666 in.´lbf
Fan motor x Fan shroud2.652723 in.´lbf
Fan x Fan motor6.46657 in.´lbf
Page 622 of 1943
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
Page 641 of 1943
DI±36
± DIAGNOSTICSENGINE
2001 PRIUS (RM778U)
DTC P0116 Engine Coolant Temp. Circuit Range/
Performance Problem
CIRCUIT DESCRIPTION
Refer to DTC P0115 on page DI±32.
DTC No.DTC Detecting ConditionTrouble Area
When the engine starts, the water temp. is ±7°C (20°F) or
less. And, 20 min. or more after the engine starts, the engine
temp. sensor value is 5°C (41°F) or less (2 trip detection logic)
When the engine starts, the water temp. is between ±7°C
(20°F) and 10°C (50°F). And, 5 min. or more after the engine
starts, the engine coolant temp. sensor value is 5°C (41°F) or
less. (2 trip detection logic)
P0116When the fluctuations in the engine coolant tempeerature are
within 3 °C (37 °F)before and afrer the follwing conditions are
met:
1. IDL OFF time 250 sec.
2. Vehicle speed change of 30 km/h (19 mph) or more occurs
10 times or more.
3. 35 °C (95 °F) Engine coolant temperature when the
ignition switch is turned ON < 60 °C (140 °F)
4. Intake air temperature after starting the engine ±6.7 °C
(20 °F)Engine coolant temp. sensor
Cooling system
INSPECTION PROCEDURE
HINT:
If DTC P0115 and P0116 are output simultaneously, engine coolant temp. sensor circuit may be open.
Perform troubleshooting of DTC P0115 first.
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame
records the engine conditions when the malfunction is detected, when troubleshooting it is useful for
determining whether the vehicle was running or stopped, the engine warmed up or not, the air±fuel
ratio lean or rich, etc. at the time of the malfunction.
1 Are there any other codes (besides DTC P0116) being output?
YES Go to relevant DTC chart.
NO
DI6UZ±03
Page 782 of 1943
Battery ECU
TROUBLE CODE
BATTERY SOC
WOUT
WIN
DELTA SOC
IB MAIN BATTERY
BATT TEMP 1
BATT TEMP 2
BATT TEMP 3
BATT TEMP 4
BATT INSIDE AIR
NORMAL STATUS
PRE ONBOARD CH
ONBOARD CHARGE
OFF AVE CHG ST
COOLING FAN LO
COOLING FAN MID
COOLING FAN HI
SBL FAN ST RQST
AUX. BATT V
EQTR CHARGE ST
EQCO DF RERAY
CCTL
BATT BLOCK V1
BATT BLOCK V2
BATT BLOCK V3
BATT BLOCK V4
BATT BLOCK V5
BATT BLOCK V6
BATT BLOCK V7
BATT BLOCK V8
BATT BLOCK V9
BATT BLOCK V10
BATT BLOCK V11
BATT BLOCK V12
BATT BLOCK V13
BATT BLOCK V14
BATT BLOCK V15
BATT BLOCK V16
BATT BLOCK V17
BATT BLOCK V18
BATT BLOCK V19%
KW
KW
%
A
°F ( °C)
YES / NO
YES / NO
YES / NO
YES / NO
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFF
ON / OFFV
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V °F ( °C)
°F ( °C)
°F ( °C)
°F ( °C)
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±185
2001 PRIUS (RM778U)
Page 789 of 1943
DI±192
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
309Limited driving
311Normal driving
312Normal driving
313Normal driving
314Normal driving
315Normal driving
316Limited driving
317Limited driving
318Limited driving
319Limited driving
320Limited driving
321Limited driving
322Limited driving
323Limited driving
324Limited driving
325Limited driving
326Limited driving
P3125327Converter & Inverter Assem-Limited drivingP3125328
Converter & Inverter Assem
bly MalfunctionLimited driving
329
y
Limited driving
330Limited driving
331Limited driving
332Limited driving
333Limited driving
334Limited driving
335Limited driving
336Limited driving
337Limited driving
338Limited driving
339Limited driving
340Limited driving
341Limited driving
342Limited driving
343Limited driving
344Limited driving
345Limited driving
P3130346Inverter Cooling System Mal-Normal drivingP3130347
Inverter Cooling System Mal
functionNormal driving
P3135348Circuit Breaker Sensor Mal-Normal drivingP3135349
Circuit Breaker Sensor Mal
functionNormal driving
P3140350It l kMlf tiNormal drivingP3140351Interlock MalfunctionNormal driving
P3145352Vehicle Speed Sensor Circuit
MalfunctionCruise control driving impossible
Page 794 of 1943
DI82L±02
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±197
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 instrument
or other factors.
If a malfunction code is displayed during the DTC check in the check mode, check the circuit for that code
listed in the table below. For the details of each code, turn to the page referred to under the ''See page'' for
the respective ''DTC No.'' in the DTC chart.
DTC No.
(See page)Detection ItemTrouble Area
Hybrid
System
Warning
Light*
Memory
B2799
(DI±210)Immobilizer MalfunctionWire Harness
Immobilizer System
C2692
(DI±212)Regenerative Brake Check±
C2693
(DI±212)Regenerative Brake Check±X
P1120
(DI±213)Accelerator Pedal Position
Sensor Circuit MalfunctionAccelerator Pedal Position Sensor
Wire Harness
P1520
(DI±215)Stop Light Switch (Cruise Con-
trol System) MalfunctionStop Light Switch
Wire Harness
Brake ECU
X
P1566
(DI±217)Cruise Control System Malfunc-
tionStop Light Switch
Brake ECU
Wire Harness
X
P1600
(DI±219)BATT MalfunctionHV Fuse
Wire Harness
P1780
(DI±221)Park/Neutral Position Switch
System MalfunctionPark/Neutral Position Switch
Wire Harness
P3000
(DI±223)HV Battery Malfunction
HV Battery System
High Voltage Fuse
Power Cable
HV Battery Cooling System
/X
P3001
(DI±224)HV Battery ECU MalfunctionBattery ECU
P3004
(DI±225)Power Cable Malfunction
Power Cable
HV Battery System
Service Plug
System Main Relay
Converter & Inverter Assembly
/X
P3100
(DI±229)HV ECU Malfunction
Wire Harness
HV ECU
ECM
Crankshaft Position Sensor
Camshaft Position Sensor
Ignition Switch
P3101
(DI±237)Engine System MalfunctionEngine
HV Transaxle
P3105
(DI±238)Battery ECU Communication Cir-
cuit MalfunctionWire Harness
Battery ECU
P3106
(DI±240)ECM Communication Circuit
MalfunctionWire Harness
ECM/X
Page 795 of 1943
DI±198
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)P3107
(DI±242)
Airbag ECU Communication Cir-
cuit MalfunctionWire Harness
Airbag Sensor Assembly
P3108
(DI±244)A/C Amplifier Communication
Circuit MalfunctionWire Harness
A/C AmplifierX
P3109
(DI±245)Brake ECU Communication Cir-
cuit MalfunctionWire Harness
Brake ECU
P3110
(DI±247)IGCT Relay MalfunctionWire Harness
IGCT Relay
P3115
(DI±249)System Main Relay Malfunction
Wire Harness
System Main Relay
HV ECU
P3120
(DI±252)HV Transaxle Malfunction
HV Transaxle
Wire Harness
System Main Relay
P3125
(DI±266)Converter & Inverter Assembly
MalfunctionConverter & Inverter Assembly
Wire Harness
P3130
(DI±302)Inverter Cooling System Mal-
function
Inverter Water Pump
Wire Harness
IG2 Relay
Electric Cooling Fan System
P3135
(DI±305)Circuit Breaker Sensor Malfunc-
tionCircuit Breaker Sensor
Wire Harness
P3140
(DI±307)Interlock Malfunction
Interlock Switch
Inverter Terminal Cover
Converter & Inverter Assembly
Wire Harness
P3145
(DI±310)Vehicle Speed Sensor Circuit
MalfunctionWire HarnessX
*: : Hybrid system warning light lights up. X: Hybrid system warning light does not light up.
Page 802 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±205
2001 PRIUS (RM778U)DTC NO.
INF. CodeDetection ItemDetecting Condition
326Generator inverter current sensor malfunction (V phase sub sensor)
327Open in generator inverter current sensor (V phase sub sensor)
328Generator inverter current sensor malfunction (V phase main sensor)
329(when there is a history that the state of malfunction continued during in-
verter fail safe mode)
330Open in generator inverter current sensor (V phase main sensor)
331(when there is a history that the state of malfunction continued during in-
verter fail safe mode)
332Generator inverter current sensor V phase performance problem
333Generator Inverter Current
(when there is a history that the state of malfunction continued during in-
verter fail safe mode)
334
Generator Inverter Current
Sensor MalfunctionGenerator inverter current sensor malfunction (W phase sub sensor)
335Open in generator inverter current sensor (W phase sub sensor)
P3125336Generator inverter current sensor malfunction (W phase main sensor)P3125
337(when there is a history that the state of malfunction continued during in-
verter fail safe mode)
338Open in generator inverter current sensor (W phase main sensor)
339(when there is a history that the state of malfunction continued during in-
verter fail safe mode)
340Generator inverter current sensor W phase performance problem
341(when there is a history that the state of malfunction continued during in-
verter fail safe mode)
342Motor Gate Shutdown Signal+B short in generator gate shutdown signal circuit
343
Motor Gate Shutdown Signal
Line ConnectionOpen or GND short in generator gate shutdown signal circuit
344Failure in Monitoring Genera-
tor Torque PerformanceFailure in monitoring generator torque performance
345Abnormal Current Value of
GeneratorAbnormal current value of generator
P3130346Inverter Cooling System Mal-Water pump system malfunctionP3130347
Inverter Cooling System Mal
functionElectric cooling fan system malfunction
P3135348Circuit Breaker Sensor Mal-GND short in circuit breaker sensorP3135349
Circuit Breaker Sensor Mal
functionOpen or +B short in circuit breaker sensor
P3140350It l kMlf tiSafety devices operating with vehicle is stopped (ILK signal ON)P3140351Interlock MalfunctionOpen circuit in interlock signal circuit while vehicle is running
P3145352Vehicle Speed Sensor Circuit
MalfunctionNo input of vehicle speed signal during cruise control driving
Page 893 of 1943
A14736
BatteryMAINB±G 1
1
F18 1 1
5
1
F132 3 2
2Engine Room J/B
W±B IK1 2
14
5
AM2 B±WB±W
B±W I15
Ignition SW W±R
6 711
IG2 AM2
Instrument Panel J/B
2C
1K 1A 2G9
1J
1B
B
F12IG2 Relay
Fusible Link
Block No. 1
Fusible Link
Block No. 2 1J
2G
2BW±R
13 3
IE AA AB±W
2
W±B W±B
W±BW3
Water
Pump
Motor
J1
J/C J7
J/C W±B DI±302
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
DTC P3130 Inverter Cooling System Malfunction
CIRCUIT DESCRIPTION
The HV ECU checks the operation of the inverter water pump and detects malfunction.
HINT:
When using an OBD scan tool other than TOYOTA hand±held tester, check all the steps.
When using TOYOTA hand±held tester, confirm the information code and check it.
DTC P3130 ± Information code 346
INF. code.Detecting ConditionTrouble Area
346Water pump system malfunction
Inverter water pump
IG2 relay
Wire harness
WIRING DIAGRAM
DI839±02