engine TOYOTA PRIUS 2001 Service Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: PRIUS, Model: TOYOTA PRIUS 2001Pages: 1943, PDF Size: 18.26 MB
Page 618 of 1943
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.
Page 619 of 1943
± DIAGNOSTICSENGINE
DI±11
2001 PRIUS (RM778U)
NG Proceed to page SF±6 and continue to trouble-
shoot.
OK
7 Check for spark.
PREPARATION:
(a) Remove the ignition coil (See page IG±5).
(b) Remove the spark plug.
(c) Install the spark plug to ignition coil and connect the ignition coil connector to ignition coil.
(d) Disconnect the injector connector.
(e) Be sure to ground the screw of the spark plug securely.
CHECK:
Check if spark occurs while engine is being cranked.
NOTICE:
Do not crash the electrode gap.
To prevent excess fuel being injected from the injectors during this test, don't crank the engine
for more than 5 ± 10 seconds at a time.
NG Proceed to page IG±1 and continue to trouble-
shoot.
OK
Proceed to problem symptoms table on page
DI±22.
Page 620 of 1943
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
Page 621 of 1943
± 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.
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 623 of 1943
± 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
Page 624 of 1943
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
Page 625 of 1943
± 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
Page 626 of 1943
DI±18
± DIAGNOSTICSENGINE
2001 PRIUS (RM778U)P1455
(DI±140)
Vapor Reducing Fuel Tank Sys-
tem Leak Detected (Small Leak)
Hose and pipe
Heated oxygen sensor
Fuel system
VVT system
Ignition system
Mass air flow meter
ECM
P1525
(DI±141)Resolver Circuit
MalfunctionHV ECU
Engine ECU±
P1600
(DI±143)ECM BATT MalfunctionOpen in back up power source circuit
ECM
P1633
(DI±145)ECU Malfunction (ETCS Circuit)ECM
P1636
(DI±146)HV ECU MalfunctionHV ECU
Engine ECU
P1637
(DI±148)EGSTP Signal MalfunctionHV ECU
Engine ECU±
P1656
(DI±150)OCV Circuit Malfunction (for
VVT±i)Open or short in OCV circuit
OCV
ECM
P3190
(DI±153)Poor Engine Power
Air induction system
Throttle body
Fuel pressure
Engine
Mass air flow meter
P3191
(DI±153)Engine dose not start
Mass air flow meter
Out of fuel
Engine coolant temp. sensor
Crankshaft position sensor
Camshaft position sensor
ECM
*1: MIL lights up
Page 627 of 1943
DI7SS±01
F02094
E7 E8 E9 E10
DI±20
± DIAGNOSTICSENGINE
2001 PRIUS (RM778U)
TERMINALS OF ECM
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
BATT (E8 ± 3) ± E1 (E8 ± 17)R±W eBRAlways9 ± 14
+B (E8 ± 4) ± E1 (E8 ± 17)B e BRIG switch ON9 ± 14
+BM (E7 ± 6) ± E1 (E8 ± 17)GR e BRAlways9 ± 14
IGSW(E10 ± 9) ± E1(E8 ± 17)B±W e BRIG switch ON9 ± 14
MREL (E9 ± 25)
± E1(E8 ± 17)G±R e BRIG switch ON9 ± 14
VC (E8 ± 2) ± E2 (E8 ± 18)Y±R e BRIG switch ON4.5 ± 5.5
VTA (E8 23) E2 (E8 18)PBR
IG switch ON
Throttle valve fully closed0.4 ± 1.0
VTA (E8 ± 23) ± E2 (E8 ± 18)Pe BRIG switch ON
Throttle valve fully open3.2 ± 4.8
VTA2 (E8 21) E2 (E8 18)LBR
IG switch ON
Accelerator pedal released2.0 ± 2.9
VTA2 (E8 ± 21) ± E2 (E8 ± 18)Le BRIG switch ON
Accelerator pedal depressed4.6 ± 5.1
VG (E8 ± 10) ± EVG (E8 ± 19)G eRIdling, A/C switch OFF, Shift position in N or P position0.5 ± 3.0
THA (E8 ± 22) ± E2 (E8 ± 18)R±B eBRIdling, Intake air temp. 20°C (68°F)0.5 ± 3.4
THW (E8 ± 14) ± E2 (E8 ± 18)W eBRIdling, Engine coolant temp. 80°C (176°F) 0.2 ± 1.0
IG switch ON9 ± 14
#10 (E8 ± 5) ± E01 (E7 ± 21)Y eW±BIdlingPulse generation
(See page DI±65)
IG switch ON9 ± 14
#20 (E8 ± 6) ± E01 (E7 ± 21)B±R eW±BIdlingPulse generation
(See page DI±65)
IG switch ON9 ± 14
#30 (E7 ± 1) ± E01 (E7 ± 21)L±W eW±BIdlingPulse generation
(See page DI±65)
IG switch ON9 ± 14
#40 (E7 ± 2) ± E01 (E7 ± 21)R±W eW±BIdlingPulse generation
(See page DI±65)
IGT1 (E7 ± 11) ± E1 (E8 ± 17)Y±G eBRIdlingPulse generation
(See page DI±115)
IGT2 (E7 ± 12) ± E1 (E8 ± 17)W eBRIdlingPulse generation
(See page DI±115)
IGT3 (E7 ± 13) ± E1 (E8 ± 17)G eBRIdlingPulse generation
(See page DI±115)