2001 TOYOTA PRIUS battery

Verification Results of Warning Light
Engine
HV
INF. code
HV battery
Vehicle Verification Results
( ) ON ( ) OFF
( ) engine ( ) HV
( ) HV battery
( ) output control warning light
( ) brake ( ) ABS ( ) charge ( ) PS
( ) others
( )Verification Results of Diagnostic Code
Brake
PS
Vehicle Inspection Results (Verification items, reason to identify/presume the cause parts, etc.)
Replacement Parts
problem parts: No/Yes (Sending date: . . )Duplication Status
( ) always
( ) sometimes
( ) no reproduction
Confirmation Results
After Repair
( ) Normal
( ) reproduction
( ) others ( )
DI±176
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)

A04550
DLC3
912 3 4 56 78
16 15 14 13 12 11 10
DI±178
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
2001 PRIUS (RM778U)

Freeze frame data:
As the freeze frame data records the driving condi-
tion when a malfunction is detected, when trouble-
shooting, it is useful for determining whether the ve-
hicle was running, braked, stopped or reversed.
(b) Check the DLC3.
The HV control ECU conforms to ISO 14230 for commu-
nication.
The terminal arrangement of the DLC3 complies with
SAEJ1962 and matches the ISO 14230 format.
Terminal No.Connection/Voltage or ResistanceCondition
7Bus
Line/Pulse generationDuring transmission
4Chassis Ground e Body Ground/1 W or lessAlways
5Signal Ground e Body Ground/1 W or lessAlways
16Battery Positive e Body Ground/10 ± 15 VAlways
HINT:
If your display shows UNABLE TO CONNECT TO VEHICLE
when you have connected the cable of the TOYOTA hand±held
tester to the DLC3, turned the motor switch ON and operated
the tester, there is a problem in the vehicle or tool.

If communication is normal when the tool is connected to
another vehicle, inspect the DLC3 on the original vehicle.

If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department.
3. INSPECT DIAGNOSIS
(a) Check the auxiliary battery.
(1) Measure the voltage of the auxiliary battery.
Voltage: 10 ± 15 V
(2) Inspect the auxiliary battery, fuses, fusible links, wir-
ing harness, connectors and ground.

A14089
B12009
F12396
DLC3
TOYOTA Hand±held Tester
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±179
2001 PRIUS (RM778U)
(b) Check the master warning light.
(1) Turn the ignition switch ON and confirm that the
master warning light comes on.
HINT:
If the master warning light does not come on, suspect a burnt
fuse, burnt bulb, or open in wiring harness.
(2) When the ºREADYº light is ON, the master warning
light should go off.
If the lamp remains on, the diagnosis system has detected a
malfunction in the system or the meassage such as ºWhen you
park your care, make sure you shift to Park P.º and ºThe batter-
ies will not charge if the shifter is Nº appears on the multi±in-
formation display.
Since DTC may be stored even though the lamp is OFF, be sure
to check DTC.
(c) Check the DTC.
(1) Prepare a TOYOTA hand±held tester.
(2) Connect the TOYOTA hand±held tester to the
DLC3.
(3) Turn the ignition switch ON and push the TOYOTA
hand±held tester main switch ON.
(4) Use the TOYOTA hand±held tester to check the
DTC, information code and freeze frame data and
note them down. (For operating instructions, see
the TOYOTA hand±held tester operator's manual).
HINT:

For one DTC, the HV diagnosis system can memorize
more than one information code and freeze frame data
corresponding to them. Therefore, when troubleshooting,
check all of the information codes, record the freeze
frame data and then start inspection according to the pro-
cedures of ºCircuit Inspectionº.

The HV ECU is communicating with each ECU of the en-
gine brake, HV battery and EMPS. So, if a warning is out-
put from the HV control system, check and record DTCs
of all ECUs. (See tables on the following pages.)
(5) See a related page to confirm details of the DTC.

SHIFT POSITION
BRAKE TORQ
MG2 TORQ
MG1 TORQ
VEHICLE SPD
ACC THROTTLE
OCCURRENCE TRIP( km/h)
%
SHIFT POSITION
BRAKE TORQ
MG2 TORQ
MG1 TORQ
VEHICLE SPD
ACC THROTTLE
OCCURRENCE TRIP%
SHIFT POSITION
BRAKE TORQ
MG2 TORQ
MG1 TORQ
VEHICLE SPD
ACC THROTTLE
OCCURRENCE TRIP% ACCEL MODE 1
ACCEL MODE 2
ACCEL MODE 3
OVER VOLTAGE
OVER CURRENT
MG2 TEMP HIGH
MG1 TEMP HIGH
BATTERY FULL
CHG RESTRICTION
REGN BRK INFECTYes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No REGEN IH FACTOR
BATT LOW VOLT
DISCHAG INHIBIT
N RANG OVR TIME
BATT HIGH VOLT
BATT OVER LOAD
BATT HIGH TEMPYes / No
Yes / No
Yes / No
Yes / No
Yes / No
Yes / No
LOAT CONDITION
DRIVING PATTEN
DRIVING PATTEN
DRIVING PATTEN BATT SAVE RQST
DRIVING PATTERNN´m
N´m
N´m
N´m
N´m
N´m N´m
N´m
N´m
mph
( km/h) mph
( km/h) mph
± DIAGNOSTICSHYBRID VEHICLE CONTROL SYSTEM
DI±183
2001 PRIUS (RM778U)

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)

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)

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

± 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