O2 sensor 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 818 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±225
2001 PRIUS (RM778U)
DTC P3004 Power Cable Malfunction
CIRCUIT DESCRIPTION
If the inverter voltage is not decreased after discharge with the ignition switch OFF, the VM sensor in the
inverter is determined as defective.
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 P3004 ± Information code 130
INF. Code.Detecting ConditionTrouble Area
130When HV battery voltage becomes lower than inverter voltageConverter & inverter assembly
INSPECTION PROCEDURE
1 Are there any other codes of HV ECU being outputs?
YES Go to relevant DTC chart.
NO
Replace converter & inverter assembly.
DI82X±02
Page 820 of 1943
A15179
BA
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±227
2001 PRIUS (RM778U)
CIRCUIT DESCRIPTION
DTC P3004 ± Information code 132
INF. Code.Detecting ConditionTrouble Area
132When inverter voltage sensor is malfunctioning or limiter resis-
tance value increases.Converter & inverter assembly
Power cable
System main relay
INSPECTION PROCEDURE
1 Are other information codes recorded?
YES Check applicable information code (See page
DI±197).
NO
2 Check continuity of limiter resistance in system main relay.
PREPARATION:
Remove the system main relay.
CHECK:
(a) Apply battery voltage across terminals 1 and 3.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals A and B.
OK:
Continuity
NG Replace the system main relay.
OK
Check continuity and replace power cable.
Page 822 of 1943
A14150
H12Hybrid Vehicle
Control ECU
10 21
GO G 9
IA2 G
E9 GO ECM
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±229
2001 PRIUS (RM778U)
DTC P3100 HV ECU Malfunction
CIRCUIT DESCRIPTION
The HV ECU compares Ne signal with G signal that are sent from the ECM and checks whether the engine
rpm signal is correct or not.
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 P3100 ± Information code 136, 137
INF. Code.Detecting ConditionTrouble Area
136Open or short in GO signal circuitWire harness
ECM
137Engine speed sensor malfunction
ECM
Crankshaft position sensor
Camshaft position sensor
WIRING DIAGRAM
DI82Y±02
Page 823 of 1943
DI±230
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Is DTC of ECM being output (See page DI±1)?
Yes Check applicable DTC (See page DI±1).
NO
2 Check for open and short in wire harness between GO terminal of HV ECU and
GO terminal of ECM (See page IN±41).
NG Repair or replace wire harness.
OK
3 Check resistance of crankshaft position sensor and camshaft position sensor
(See page IG±1).
NG Replace the crankshaft position sensor or cam-
shaft position sensor.
OK
Replace ECM.
Page 834 of 1943
A14139
Hybrid Vehicle
Control ECU
3
H13ABFS L 23
A18 GSW2 Airbag Sensor
Assembly DI±242
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
DTC P3107 Airbag ECU Communication Circuit Mal-
function
CIRCUIT DESCRIPTION
The HV ECU detects the malfunction of the collision signal circuit from the airbag and gives warning to the
driver.
DTC P3107 ± Information code 213, 214, 215
INF. Code.Detecting ConditionTrouble Area
213
214When communication between airbag ECU and HV ECU is
abnormal 10 sec after ignition is turned ON
Wire harness
Airbag sensor assembly215abnormal 10 sec. after ignition is turned ONAirbag sensor assembly
WIRING DIAGRAM
DI832±02
Page 835 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±243
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check for open, short and +B short in wire harness between HV ECU ABFS ter-
minals and airbag ECU GSW 2 terminal (See page IN±41).
HINT:
Confirm that there is no open circuit in the wire harness. If the battery voltage is always applied to the HV
ECU ABFS terminal with the ignition ON, the airbag signal circuit has +B short.
NG Repair or replace wire harness.
OK
Replace airbag sensor assembly.
Page 844 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±253
2001 PRIUS (RM778U)
CIRCUIT DESCRIPTION
The HV ECU detects the malfunction of the transmission system. Judging from a malfunction symptom, it
records one of the four information codes.
DTC P3120 ± Information code 239, 240, 241, 242
INF. Code.Detecting ConditionTrouble Area
239Shaft damaged
240Generator lockedHV t l241Torque limiter slidingHV transaxle
242Planetary gear locked
INSPECTION PROCEDURE
When Information code 239 in stored, check that the connector of the crankshaft position sensor is properly
connected. If disconnected, the code 239 may be stored.
If any of these information codes is output, replace the defective part inside the HV transaxle.
Page 849 of 1943
A14121
Motor Generator No. 2Hybrid Vehicle
Control ECU
MMTG
MMT3
M4
1
M4R±W
MMTG
MMT GR9
H10
2
H10 DI±258
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
CIRCUIT DESCRIPTION
The HV ECU checks the motor temperature and controls the load limitation in order to prevent the motor from
overheating. Also, it detects the abnormality of the line connection of the motor temperature sensor and mal-
function of the sensor itself.
DTC P3120 ± Information code 247, 249
INF. Code.Detecting ConditionTrouble Area
247GND short in motor temperature sensorHV transaxle
249Open or +B short in motor temperature sensor
HV transaxle
Wire harness
WIRING DIAGRAM
Page 850 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±259
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check open, short and +B short in wire harness between HV transaxle motor
temperature sensor MMT and MMTG terminals and HV ECU MMT and MMTG ter-
minals (See page IN±41).
HINT:
Confirm that there is no open circuit in the wire harness. If the voltage of the HV ECU MMT terminal is always
more than 5V with the ignition ON, the motor temperature sensor circuit has +B short.
NG Repair or replace wire harness.
OK
Check for open in motor temperature sensor and then replace HV transaxle motor.
Check motor temperature sensor (See page HV±40).
CIRCUIT DESCRIPTION
DTC P3120 ± Information code 248, 250
INF. Code.Detecting ConditionTrouble Area
248Motor temperature sensor malfunctionHV t l t250Motor temperature sensor performance problemHV transaxle motor
INSPECTION PROCEDURE
If the information code 248 or 250 is output, replace the HV transaxle motor.
Page 855 of 1943
A14121
Motor Generator No. 1Hybrid Vehicle
Control ECU
4
M2
9
M2B±R
GMT
GMTG G±W1
H10
8
H10 GMT
GMTG DI±264
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
CIRCUIT DESCRIPTION
The HV ECU checks the generator temperature and controls the load limitation in order to prevent the gener-
ator from overheating. Also, it detects the abnormality of the line connection of the generator temperature
sensor and the malfunction of the sensor itself.
DTC P3120 ± Information code 257, 259
INF. Code.Detecting ConditionTrouble Area
257GND short in generator temperature sensorHV transaxle
259Open or +B short in generator temperature sensor
HV transaxle
Wire harness
WIRING DIAGRAM