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 781 of 1943

ACC TENT TRBLR
ABNML COM BR±HV
ILK OPERATION
FUEL SHORTAGEYes / No
Yes / No
Yes / No
Yes / No TEMP TRBLE FACT
ENG WARM UP RQT
AIRCON REQUEST
ENG STP INHIBIT
HCAC ABSRT RQST
HV BATT CH RQST
IDLING REQUEST
ENG STOP RQSTYes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No ENG INDPDENT RQ
OUTPUT V OVER
INPUT V LOW
INPUT V OVER
OVR HEAT PRTECT
DC/DC CONV STOP
DC/DC V UNSTLE
OUTPUT STOP
DC/DC STOP FACTYes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No DC/DC CONV STP DI±184
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
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 783 of 1943

Engine ECU
TROUBLE CODE
CALC LOAD
ENGINE SPD
COOLANT TEMP
INTAKE AIR
VEHICLE SPD
SHORT FT #1
LOND FT #1
FUEL SYS #1
FUEL SYS #2
ENG RUN TIME
BATTERY
INJECTOR
INJ VOL FB
FEL FB COEF
A/F LEARN
PURGE LEARN
KCS FEEDBACK
REQ ENQ TORQ
RAM MONITOR
ENG RUN SIG
ACC RACING SIG
ENG WARM UP SIG
ENG RUN PERM
FC STATUS
ENG STP LIMIT%
rpm
%
%
V
ms
%
%
degree
KW
ON / OFF
ON / OFF
ON / OFF
EMPS ECU
TROUBLE CODE
TRQ1
TRQ2
WRR
WRL
MOTOR ACTUAL
COMMAND VALUE
STR ANGL VEL
THERMISTOR TEMP
PIG SUPPLY
IG SUPPLY
TRQ1 ZERO VAL
TRQ2 ZERO VALV
V
V V V A
A
deg/s
ON / OFF°F ( °C)
°F ( °C)
mph ( km/h)
mph ( km/h)
mph ( km/h)
°F ( °C) DI±186
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
Page 784 of 1943

F12396
TOYOTA hand±held tester
DLC3
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±187
2001 PRIUS (RM778U)
(d) Clear the DTC after completion of repair.
(1) Connect the TOYOTA hand±held tester to the
DLC3.
Before clearing, check that DTCs and freeze frame
data of the HV ECU and the ECU related to the op-
eration history data are reccorded.
(2) Operate the TOYOTA hand±held tester to erase the
DTC (See the hand±held tester operator's manu-
al.).
4. FAIL±SAFE CHART
If any the following codes is recorded, the HV ECU enters the fail safe mode.
DTC codeINF. codeTrouble areaDriving condition
B2799101Immobilizeer MalfunctionImpossible to drive
C2692102Regenerative Brake Check±
C2693103Regenerative Brake Check±
104Limited driving
105Limited driving
106Limited driving
107Limited driving
108Limited driving
P1120109Accelerator Pedal Position
Sensor Circuit MalfunctionLimited drivingP1120
11 0Sensor Circuit MalfunctionLimited driving
111Limited driving
11 2Limited driving
11 3Limited driving (Creep vehicle speed)
11 4Limited driving (Creep vehicle speed)
P152011 5Stop Light Switch MalfunctionCruise control driving impossible
P156611 6Cruise Control System Mal-
functionCruise control driving impossible
P160011 7BATT MalfunctionNormal driving
11 8Impossible to drive/Normal driving when shift position is fixed
P178011 9Park/Neutral Positiont SwitchImpossible to drive/Normal driving when shift position is fixedP1780120
Park/Neutral Positiont Switch
System MalfunctionImpossible to drive
121
y
Impossible to drive/Normal driving when shift position is fixed
123Limited driving
P3000125HV B tt M lf tiLimited drivingP3000388HV Battery MalfunctionLimited driving
389Limited driving
P3001129HV Battery ECU MalfunctionLimited driving
130Limited driving
P3004131PCblMlftiImpossible to driveP3004132Power Cable MalfunctionNormal driving
133Limited driving
Page 785 of 1943

DI±188
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
127Limited driving
128Limited driving
134Impossible to drive
135Impossible to drive
136Normal driving
137Normal driving
138Limited driving
139Normal driving
140Impossible to drive
141Impossible to drive
142Impossible to drive
143Impossible to drive
144Impossible to drive
145Impossible to drive
147Impossible to drive
148Normal driving
149Normal driving
150Impossible to drive
151Impossible to drive
152Impossible to drive
153Impossible to drive
154Impossible to drive
P3100155HV ECU M lf tiImpossible to driveP3100156HV ECU MalfunctionImpossible to drive
157Impossible to drive
158Impossible to drive
159Impossible to drive
160Impossible to drive
161Impossible to drive
162Impossible to drive
163Impossible to drive
164Impossible to drive
165Limited driving
166Normal driving
167Limited driving
168Limited driving
169Limited driving
170Limited driving
171Impossible to drive
172Impossible to drive
173Impossible to drive
174Normal driving
175Normal driving
176Normal driving
177Impossible to drive
178Impossible to drive
Page 786 of 1943

± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±189
2001 PRIUS (RM778U)
179Impossible to drive
180Impossible to drive
181Impossible to drive
182Impossible to drive
183Impossible to drive
184Impossible to drive
185Impossible to drive
186Impossible to drive
187Impossible to drive
188Limited driving
189Limited driving
190Limited driving
191Limited driving
192Limited driving
P3100193HV ECU MalfunctionLimited drivingP3100
194
HV ECU Malfunction
Limited driving
195Limited driving
196Limited driving
197Limited driving
198Normal driving
199Limited driving
200Limited driving
201Limited driving
202Limited driving
203Limited driving
271Normal driving
310Limited driving
392Impossible to drive
393Impossible to drive
204Limited driving
P3101205Engine System MalfunctionLimited drivingP3101
238
Engine System Malfunction
Limited driving
206Limited driving
P3105207Battery ECU Communication
Circuit MalfunctionLimited drivingP3105
208Circuit MalfunctionLimited driving
209Limited driving
210Limited driving
P3106211ECM Communication Circuit
MalfunctionLimited drivingP3106
212MalfunctionLimited driving
394Limited driving
213Normal driving
P3107214Airbag ECU Communication
Circuit MalfunctionNormal drivingP3107
215Circuit MalfunctionNormal driving
P3108216A/C Amplifier CommunicationNormal drivingP3108217
A/C Am lifier Communication
Circuit MalfunctionNormal driving
Page 787 of 1943

DI±190
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)
218Regenerative brake ineffective
219Regenerative brake ineffective
P3109220Battery ECU Communication
Circuit MalfunctionRegenerative brake ineffectiveP3109
221Circuit MalfunctionRegenerative brake ineffective
222Regenerative brake ineffective
P3110223IGCT Relay MalfunctionNormal driving
224Normal driving
225Normal driving
226Impossible to drive
227Impossible to drive
P3115228System Main Relay Malfunc-
tionImpossible to driveP3115
229tionImpossible to drive
231Impossible to drive
232Limited driving
233Impossible to drive
234Regenerative brake ineffective
235Impossible to drive
236Normal driving
237Limited driving
239Limited driving
240Impossible to drive
241Normal driving
242Limited driving
243Limited driving
244Limited driving
245Limited driving
P3120246HV T l M lf tiLimited drivingP3120247HV Transaxle MalfunctionNormal driving
248Normal driving
249Normal driving
250Normal driving
253Limited driving
254Limited driving
255Limited driving
256Limited driving
257Normal driving
258Normal driving
259Normal driving
260Normal driving
Page 788 of 1943

± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±191
2001 PRIUS (RM778U)
263Normal driving
264Normal driving
265Normal driving
266Limited driving
267Limited driving
268Limited driving
269Limited driving
270Limited driving
272Normal driving
273Normal driving
274Normal driving
275Normal driving
276Normal driving
277Normal driving
278Limited driving
279Impossible to drive
280Limited driving
281Limited driving
282Limited driving
283Limited driving
284Impossible to drive
285Limited driving
P3125286Converter & Inverter Assem-
bly MalfunctionLimited drivingP3125
287bly MalfunctionLimited driving
288Limited driving
289Limited driving
290Limited driving
291Limited driving
292Limited driving
293Limited driving
294Limited driving
295Limited driving
296Limited driving
297Limited driving
298Limited driving
299Limited driving
300Limited driving
301Limited driving
302Limited driving
303Limited driving
304Limited driving
305Limited driving
306Limited driving
307Limited driving
308Impossible to drive
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 790 of 1943

± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±193
2001 PRIUS (RM778U)
5. CHECK FOR INTERMITTENT PROBLEMS
(a) Perform a simulation test (See page IN±41).
In the simulation test, reproduce the driving condition at the trouble occurrence according to the cus-
tomer 's comments and freeze frame data recorded with DTC, such as an opening angle of the acceler-
ator pedal, SOC, engine coolant temperature, engine rpm, and MG/1MG2 rpm and torque.
(b) Check the connector and terminal (See page IN±41).
(c) Handle the connector (See page IN±41).
6. TOYOTA HAND±HELD TESTER DISPLAY ITEMS
TOYOTA Hand±held tester displayMeasurement Item
1 BEF LATST ORNumber of operation of 1 trip before last
1 BEF LATST TRPNumber of trips before last
2 BEF LATST ORNumber of operation 2 trips before last
2 BEF LATST TRPNumber of trips 2 before last
ABNML CON BR±HVCommunication malfunction between HV ECU and brake
ACC SENSOR MAINMain accelerator sensor
ACC SENSOR SUBSub accelerator sensor
ACC TENT TRBLETentative trouble of accelerator
ACC THROTTLEAccelerator throttle
ACCEL MODEHistory of acceleration and reduction
AIR CON REQUESTAir conditioner request
AUX. BATT LOWAuxiliary battery becomes week
AUX. BATT VVoltage of auxiliary battery
BATT HIGH TEMPTemperature of the battery is too high
BATT HIGH VOLTVoltage of the battery is too high
BATT LOW BOLTVoltage of the battery is low
BATT OVER LOADBattery is overloaded
BATT SAVE RQSTRequest to save the main battery
BATTERY FULLBattery full
BRAKE TORQBrake torque
CELL TEMP±MAXHighest temperature of all battery cells
CELL TEMP±MINLowest temperature of all battery cells
CHG RESTRICTIONCharge restriction
COOLANT TEMPWater temperature
CRUISE CONTROLCondition of the cruise control
DC/DC CONV STOPDC/DC converter stop signal
DC/DC CONV STOPFactors causing DC/DC converter to stop
DC/DC STOP FACTDC/DC converter has stopped at least once
DC/DC V UNSETDC/DC voltage is unsettled
DCHG RQST SOCDischarge request to adjust SOC
DISCHAG INHIBITBattery is inhibited to discharge