TOYOTA PRIUS 2001 Service Repair Manual
Manufacturer: TOYOTA, Model Year: 2001, Model line: PRIUS, Model: TOYOTA PRIUS 2001Pages: 1943, PDF Size: 18.26 MB
Page 791 of 1943
DI±194
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
0: When engine is stopped
1: When stopping engine
2: When starting engine
DRIVE CONDITION3: When cranking engine or engine is operatingDRIVE CONDITION
4: While generating power or load driving
5: ±
6: While racing engine in P position
DRIVING PATTEN1History of driving pattern 1
DRIVING PATTEN2History of driving pattern 2
DRIVING PATTEN3History of driving pattern 3
DRIVING PATTERNHIstory of driving
ECU TYPEECU type
ENG INDPDET RQFactors causing engine to run independently
ENG STOP RQSTEngine stop request
ENG STP INHIBITEngine stop inhibition
ENG WARM UP RQTEngine warming up request
ENGINE FUEL CUTEngine fuel cut
ENGINE SPDEngine speed
EXCLUSIVE INFO1Exclusive information 1
EXCLUSIVE INFO2Exclusive information 2
EXCLUSIVE INFO3Exclusive information 3
EXCLUSIVE INFO4Exclusive information 4
EXCLUSIVE INFO5Exclusive information 5
EXCLUSIVE INFO6Exclusive information 6
FUEL SHORTAGELow fuel
HCAC ABSRT RQSTHCAC OBD request
HV BATT CH RQSTRequest from HV ECU to charge the battery
HV ECU INTERMITTENTHV ECU intermittent problems
IDLING REQUESTEngine idling request
IG OFF IN DRVINTurning IG OFF while driving the car
IG OFF TIMEIG OFF time
ILK OPERATIONInterlock operation
INFORMATION 1±5Information code
INPUT V LOWInput voltage is too low
INPUT V OVERInput voltage is too high
INTAKE AIRIntake air temperature
INVERT TEMP±MG1Temperature of inverter MG1
INVERT TEMP±MG2Temperature of inverter MG2
LATEST OPERLatest number of operation
LATEST TRIPLatest number of trips (IG ON±OFF)
LOAD CONDITIONIndicating which of MG1 or MG2 the vehicle uses more
MAIN BATT LOWSOC of main battery becomes low
MCYL CTRL POWERTorque for controlling oil pressure of master cylinder
MG1 TEMP HIGHTemperature MG1 is too high
MG2 TEMP HIGHTemperature MG2 is too high
MG1 CURRENT VElectric current of MG1 V phase
Page 792 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±195
2001 PRIUS (RM778U) MG1 CURRENT W
Electric current of MG1 W phase
MG1 INV TEMP HITemperature of inverter MG1 is high
MG1 REVMG1 revolution
MG1 TEMPMotor temperature of MG1
MG1 TEMP HIGHTemperature fo MG1 is too high
MG2 TEMP HIGHTemperature fo MG2 is too high
MG1 CURRENT VElectric cuurent of MG1 is V phase
MG1 CURRENT WElectric cuurent of MG1 is W phase
MG1 INV TEMP HITemperature of inverter MG1 is higt
MG1 REVMG1 revolution
MG1 TEMPMotor temperature of MG1
MG1 TEMP HIGHTemperature of MG1 is high
MG1 TORQMG1 torque
MG2 CURRENT VElectric cuurent of MG2 is V phase
MG2 CURRENT WElectric cuurent of MG2 is W phase
MG2 INV TEMP HITemperature of inverter MG2 is higt
MG2 REVMG2 revolution
MG2 TEMPMotor temperature of MG2
MG2 TEMP HIGHTemperature of MG2 is high
MG2 TORQMG2 torque
N RANGE OVR TIMELeaving shift gear into N position over a period of time
N RANGE CTRL1N position control due to incomplete shift gears
N RANGE CTRL2N position control due to rapid shift gear (D±R)
OCCURRENCE ORDROrder in which the trouble occurs
OCCURRNCE TRIPNumber of trips when this error occurred
OUTPUT STOPOutput stop
OUTPUT V OVEROutput voltage is too high
OVER CURRENTElectric current of the batytery is too high
OVER VOLTAGEVoltage of the battery is too high
OVR HEAT PRTECTOverheat protection
POWER RQSTPower output requested by HV ECU
PWR RESOURCE IBPower resource IB
PWR RESOURCE VMpower resource VM
RAPID SPD CHANGVehicle speed is changed too rapidly
REGEN EXEC TORQTorque volue of regenerative brake
REGEN IH FACTORInhibiting factor of regeneration
REGEN RQST TORQTorque valueof regenerative brake requested by HV ECU
REGN BRK INEFCTRegenerative brake is ineffective
RESIST OVR HEATRestriction resist is overheating
SG B IN REDUCINShifting gear into ºBº in reducing the speed
SG N IN REDUC/PShifting gear into ºNº reducing the speed
SHIFT BEF READYShifting gear before ºREADYº light turns on
SHIFT POSITIONShift position
SHIFT SENSOR1Shift sensor 1
SHIFT SENSOR2Shift sensor 2
SOCStated of charge
Page 793 of 1943
DI±196
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U) STEP ACC&BRAKE
Stepping both accelerator & brake at the same time
STEPP ACC IN NStepping accelerator in N position
STOP SW CONDCondition of stop switch
STP CIRCIT OPENSTP circuit short
STP IN CIR MLFSTP circuit malfunciton
TACHO METEREngine rpm
TARGET ENG SPDTarget engine speed
TEMP TRBLE FACTFactors causing temporay trouble
VEHICLE SPDVehicle speed
WIN CTRL POWERPower value of charge control
WOUT CTRL POWERPower value of discharge control
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 796 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±199
2001 PRIUS (RM778U)
INFORMATION CODE (TOYOTA Hand±held tester only)
DTC NO.INF. CodeDetection ItemDetecting Condition
B2799101Immobilizer MalfunctionNo input of signal from transponder key ECU
C2692102Regenerative Brake CheckRegenerative brake check
C2693103Regenerative Brake CheckRegenerative brake check
104Open or short in main accelerator sensor circuit
105+B short in main accelerator sensor circuit
106Main sensor internal error
107Open or short in sub accelerator sensor circuit
108+B short in sub accelerator sensor circuit
P1120109Accelerator Pedal Position
Sensor Circuit MalfunctionSub sensor internal errorP1120
11 0Sensor Circuit MalfunctionWhen difference between main sensor value and sub sensor value is large
111When sub sensor value changes while main sensor value does not
11 2When main sensor value changes while sub sensor value does not
11 3When any of the information code 104 ± 112 continues to appear
11 4Accelerator pedal not smoothly returning to original position
P152011 5
Stop Light Switch
(Cruise Control System)
Malfunction
Open or short in stop light switch circuit
P156611 6Cruise Control System
MalfunctionWhen STP signal of HV ECU is inconsistent with that of brake ECU, with
cruise control indicator ON
P160011 7BATT MalfunctionHV ECU back±up power source circuit malfunction
11 8When more than 2 main signals are ON
11 9P k/N t l P iti S it hWhen main signal is not turned ON even though sub signal has been input
P1780120Park/Neutral Position Switch
System MalfunctionOpen or short in sub sensor circuit
121
System Malfunction
When shift position detected by main signal is different from that detected
by sub signal
123HV B tt M lf tiInput of abnormal signal from battery ECU (HV battery system malfunction)
125HV Battery MalfunctionInput of abnormal signal from battery ECU (high voltage fuse blown out)
P3000388Discharge Inhibition Control
MalfunctionWhen charged battery is low due to leaving the vehicle in N position, gas
shortage or HV system malfunction
389Drop of High VoltageWhen main battery is dead or main battery is dead due to HV system mal-
function
P3001129HV Battery ECU MalfunctionBattery ECU malfunction
130HV Battery MalfunctionWhen HV battery voltage becomes lower than inverter voltage
P3004
131
PCblMlfti
When main fuse is blown out, service plug is disconnected or limiter resis-
tance is cut off
P3004
132
Power Cable MalfunctionWhen inverter voltage sensor is malfunctioning or limiter resistance value
increases
133HV Battery MalfunctionInput of abnormal signal from battery ECU
134HV ECU I t l EHV ECU Internal Error
135HV ECU Internal ErrorHV ECU Internal Error
P3100136GO Signal ErrorOpen or short in GO signal circuit
137Engine Speed Sensor
MalfunctionEngine speed sensor malfunction
Page 797 of 1943
DI±200
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)DTC NO.
INF. CodeDetection ItemDetecting Condition
127+B short in IB terminal circuit of HV ECU
128IB Circuit MalfunctionOpen or short in IB terminal circuit of HV ECU
138
IB Circuit MalfunctionWhen the difference between battery current of HV ECU and current of
battery is large
139IG Signal Circuit MalfunctionHV ECU internal error
140RAM BrakedHV ECU internal error
141ROM BrakedHV ECU internal error
142ST Signal Circuit MalfunctionWhen ST signal of HV ECU is ON, with ignition switch turned OFF
143Immobilizer MalfunctionHV ECU internal error
144HV ECU internal error
145P i Ch k M lf tiHV ECU internal error
146Primary Check MalfunctionHV ECU internal error
147HV ECU internal error
391Mt CPUMlf tiHV ECU internal error
392Motor CPU MalfunctionHV ECU internal error
393HV CPU Operation Malfunc-
tionHV ECU internal error
148HV CPU M lf tiHV ECU internal error
149HV CPU MalfunctionHV ECU internal error
150HV ECU internal error
151HV ECU internal errorP3100152HV ECU internal error
153Motor CPU MalfunctionHV ECU internal error
154
Motor CPU Malfunction
HV ECU internal error
155HV ECU internal error
156HV ECU internal error
157Mt CPUMlf tiHV ECU internal error
158Motor CPU MalfunctionHV ECU internal error
159Motor ECU CommunicationHV ECU internal error
160
Motor ECU Communication
Circuit MalfunctionHV ECU internal error
161HV ECU internal error
162HV ECU internal error
163Motor ECU Power Source
MalfunctionHV ECU internal error
164MalfunctionHV ECU internal error
165HV ECU internal error
271Motor PWN Line Connection
MalfunctionHV ECU internal error
166HV ECU internal error
167HV ECU internal error
168Motor R/D MalfunctionHV ECU internal error
169
Motor R/D Malfunction
HV ECU internal error
170HV ECU internal error
Page 798 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±201
2001 PRIUS (RM778U)DTC NO.
INF. CodeDetection ItemDetecting Condition
171HV ECU internal error
172Motor REF Signal MalfunctionHV ECU internal error
173
Motor REF Signal Malfunction
HV ECU internal error
174Motor Inverter Current Sen-HV ECU internal error
175
Motor Inverter Current Sen
sor MalfunctionHV ECU internal error
176Motor Gate Shutdown Signal
Line Connection MalfunctionHV ECU internal error
177HV ECU internal error
178Motor Main CPU MalfunctionHV ECU internal error
179
Motor Main CPU Malfunction
HV ECU internal error
180HV ECU internal error
181HV ECU internal error
182HV ECU internal error
183Rotation Angle Check CPU
MalfunctionHV ECU internal error
184MalfunctionHV ECU internal error
185HV ECU internal error
186HV ECU internal error
187Important RAM MalfunctionHV ECU internal error
188HV ECU internal error
P3100189HV ECU internal error
190HV ECU internal error
191HV ECU internal error
192Generator CPU MalfunctionHV ECU internal error
193
Generator CPU Malfunction
HV ECU internal error
194HV ECU internal error
195HV ECU internal error
196HV ECU internal error
310Generator PWN Line Con-
nection MalfunctionHV ECU internal error
197HV ECU internal error
198HV ECU internal error
199G t R/D M lf tiHV ECU internal error
200Generator R/D MalfunctionHV ECU internal error
201HV ECU internal error
202HV ECU internal error
203Generator Shutdown Signal
Line Connection MalfunctionHV ECU internal error
390Charge Inhibition Control Mal-
functionHV ECU internal error
204Ei St Mlf tiInput of abnormal signal from the ECM (abnormal engine output)
P3101205Engine System MalfunctionInput of abnormal signal from the ECM (engine unable to start)P3101
238Transaxle MalfunctionWhen engine does not start even though cranking it
206
P3105207Battery ECU Communication
Circuit Malfunction
When communication between battery ECU and HV ECU is abnormal 1
sec after ignition is turned ONP3105
208Circuit Malfunctionsec. after ignition is turned ON
Page 799 of 1943
DI±202
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)DTC NO.
INF. CodeDetection ItemDetecting Condition
209
210When communication between ECM and HV ECU is abnormal 1 sec. after
ignition is turned ON
P3106211ECM Communication Circuit
Malfunction
ignition is turned ON
P3106
212MalfunctionInput of abnormal signal from ECM
394When ECM does not operate
213
P3107214Airbag ECU Communication
Circuit Malfunction
When communication between airbag ECU and HV ECU is abnormal 10
sec after ignition is turned ONP3107
215Circuit Malfunctionsec. after ignition is turned ON
P3108216A/C Amplifier CommunicationWh i ti f A/C lifi t HV ECU i b lP3108217
A/C Am lifier Communication
Circuit MalfunctionWhen communication from A/C amplifier to HV ECU is abnormal
218
219When communication between brake ECU and HV ECU is abnormal 1.5
P3109220Brake ECU Communication
Circuit Malfunction
When communication between brake ECU and HV ECU is abnormal 1.5
sec. after ignition is turned ONP3109
221Circuit Malfunctiong
222When abnormal data is received from brake ECU
P3110223IGCT RelayWhen IGCT relay is always closed
224SMR C t1 M lf tiOpen or +B short in system main relay No. 1 circuit
225SMR Cont1 MalfunctionShort in system main relay No. 1 circuit
226SMR C t2 M lf tiOpen or +B short in system main relay No. 2 circuit
227SMR Cont2 MalfunctionShort in system main relay No. 2 circuit
P3115228SMR C t3 M lf tiOpen or +B short in system main relay No. 3 circuitP3115
229SMR Cont3 MalfunctionShort in system main relay No. 3 circuit
231System main relay + terminal deposited
232Deposit of SMRSystem main relay ± terminal deposited
233
De osit of SMR
System main relay + & ± terminal deposited
234Small reduction of motor magnetism
235E B l M lf tiLarge reduction of motor magnetism
236Energy Balance MalfunctionSmall reduction of generator magnetism
237Large reduction of generator magnetism
239Shaft damaged
240HV T l M lf tiGenerator locked
P3120241HV Transaxle MalfunctionTorque limiter slidingP3120242Planetary gear locked
243Motor resolver inter±phase short
244
Mt R l Mlf ti
Motor resolver inter±phase short (When there is a history that the state of
malfunction continued during inverter fail safe mode)
245Motor Resolver MalfunctionOpen or short in motor resolver circuit
246Open or short in motor resolver circuit (When there is a history that the
state of malfunction continued during inverter fail safe mode)
Page 800 of 1943
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±203
2001 PRIUS (RM778U)DTC NO.
INF. CodeDetection ItemDetecting Condition
247GND short in motor temperature sensor
248Motor Temperature SensorMotor temperature sensor malfunction
249
Motor Tem erature Sensor
MalfunctionOpen or +B short in motor temperature sensor
250Motor temperature sensor performance problem
253Generator resolver inter±phase short
P3120
254Generator Resolver Malfunc-
Generator resolver inter±phase short (When there is a history that the
state of malfunction continued during inverter fail safe mode)
P3120255
Generator Resolver Malfunc
tionOpen or short in generator resolver circuit
256Open or short in generator resolver circuit (When there is a history that the
state of malfunction continued during inverter fail safe mode)
257GND short in generator temperature sensor
258Generator Temperature Sen-Generator temperature sensor malfunction
259
Generator Tem erature Sen
sor MalfunctionOpen or +B short in generator temperature sensor
260Generator temperature sensor performance problem
263+B short in DCDC converter NODD wiring
264DCDC Converter MalfunctionDCDC converter malfunction
265
DCDC Converter Malfunction
Open or GND short in DCDC converter NODD wiring
266Open or GND short in inverter voltage signal circuit
267+B short in inverter voltage signal circuit
268Inverter voltage signal is inconsistent with battery voltage
269VM MalfunctionInverter voltage sensor malfunction
270
Abnormality of line connection of inverter voltage signal circuit (When there
is a history that the state of malfunction continued during inverter fail safe
mode)
272Motor PWN Line Connection
MalfunctionAbnormality of line connection of motor PWM (When there is a history that
the state of malfunction continued during inverter fail safe mode)
273Motor Inverter Gate Malfunc-
tionMotor inverter malfunction
P3125274Mt I t T tOpen or +B short in motor inverter temperature sensor
275Motor Inverter TemperatureGND short in motor inverter temperature sensor
276S M lf tiMotor inverter temperature sensor malfunction
277Sensor MalfunctionMotor inverter temperature sensor performance problem
278+B short in motor inverter stop signal circuit
279Over voltage of inverter
280Motor Inverter SinvOpen or GND short in motor inverter stop signal circuit
281
Motor Inverter Sinv
Voltage drop of inverter power source
282Inverter circuit broken
283+B short in motor inverter fail signal circuit
284Inverter overheating
285Motor Inverter FinvOpen or GND short in motor inverter fail signal circuit
286
Motor Inverter Finv
Inverter circuit broken
287Inverter internal short