2001 TOYOTA PRIUS battery

B04762
IN±14
± INTRODUCTIONFOR ALL OF VEHICLES
14 Author: Date:
2001 PRIUS (RM778U)
(b) Actions to be taken when HV battery is depleted
NOTICE:
Leaving a vehicle alone for 2 ± 3 months may cause electric
discharge from HV battery.
When this happens, replace the HV battery.
4. INSPECTION MODE
HINT:

The PRIUS automatically stops the engine while the ve-
hicle is stopped with the engine warmed up and battery
well charged if the A/C compressor operation is not re-
quired. Therefore, even if the vehicle stops for any reason
such as a check of ignition timing, the inspection mode
should be activated when continuous operation of the en-
gine is required.

The PRIUS has a skid control as traction control function.
When the wheel speed of the front wheels exceeds that
of the rear wheels, this function restrains the wheel speed
of the front wheels. It is necessary to activate the inspec-
tion mode and reset the skid control when turning only the
front wheels using a speedometer tester.
Activation inspection mode (Without using a hand±held tester)
(1) Perform the following (2) through (6) within 60 sec.
(2) Turn the ignition switch ON from OFF.
(3) With the shift lever in P position, fully depress the
accelerator pedal 2 times.
(4) With the shift lever in N position, fully depress the
accelerator pedal 2 times.
(5) With the shift lever in P position, fully depress the
accelerator pedal 2 times.
(6) Activate the inspecting mode and check that the hy-
brid system error warning light on the multi±center
display flashes.
(7) Turning the ignition switch to START starts the en-
gine's continuous operation.
NOTICE:

The idling speed in the inspection mode is approx.
1,000 rpm. The number of revolutions will increase up
to 1,500 rpm if the accelerator pedal is depressed to
a degree of less than 60%, and up to 2,250 rpm in a
case of 60% or more.

If a diagnosis code is recorded when entering the in-
spection mode, the master warning light and the error
warning light on the multi±center display is lit.

IN±16
± INTRODUCTIONFOR ALL OF VEHICLES
16 Author: Date:
2001 PRIUS (RM778U)
6. ACTIONS TO BE TAKEN FOR VEHICLE DAMAGED BY
IMPACT
(a) Items to be prepared (For operation at the site of acci-
dent)

Protective clothing (Insulated gloves, rubber
gloves, goggles, and safety shoes)

Saturated boric acid solution 20 L (Procure 800 g of
boric acid powder, put it into a container, and dis-
solve it in water.)

Red litmus paper

ABC fire extinguisher (Applicable to both oil flames
and electrical flames)

Waste rags or old towels (For wiping off the electro-
lyte)

Vinyl tape (For insulating cable)

Electrical tester
(b) Actions to be taken at the place of accident
(1) Wear insulated or rubber gloves, goggles and safe-
ty shoes.
(2) Do not touch a bare cable that could be a high±volt-
age cable. If you need to touch it, or if you have a
danger of making an accidental contact, wear insu-
lated gloves, measure the voltage between the
cable and body ground using an electrical tester,
and insulate the cable using vinyl tape.
(3) If the vehicle catches fire, use a ABC fire extinguish-
er to extinguish the fire. Trying to extinguish the fire
using only a small amount of water can be more
dangerous than effective: either use a greater
amount of water from a fire hydrant or wait for the
fire fighters.
(4) If the vehicle is partially submerged in water, do not
touch the service plug or any of the high±voltage
components and cables because of the danger of
electrocution. If you need to touch them, do so only
after pulling the vehicle completely out of water.
(5) Check the HV battery and nearby area for any leak-
age of the electrolyte. Do not touch any leaking liq-
uid because it could be the highly alkaline electro-
lyte. If you need to wipe it off (using rags etc.), do so
only after completing the following procedure: wear
the rubber gloves and goggles, neutralize the elec-
trolyte with saturated boric acid solution, and finally
apply a red litmus paper to make sure that it does
not turn blue.

B04751
High±voltage Part and Wiring
Inverter and ConverterHV Battery
Power Cable
Hybrid Transaxle
± INTRODUCTIONFOR ALL OF VEHICLES
IN±17
17 Author: Date:
2001 PRIUS (RM778U)
(6) If a damage to any of the high±voltage components
and cables is suspected, cut the high±voltage cir-
cuit using the procedure below.

Move the shift lever to the P position and en-
gage the parking brake.

Remove the ignition key. Then disconnect the
cable from the negative (±) terminal of the
auxiliary battery.

B04757
B04752
HV Fuse
IGCT Relay Engine Room J/B
Engine Room R/B No. 2
B04760
IN±18
± INTRODUCTIONFOR ALL OF VEHICLES
18 Author: Date:
2001 PRIUS (RM778U)

Remove the service plug with the insulated
gloves on.
If the service plug cannot be removed due to damage to the rear
portion of the vehicle, remove the HV fuse or IGCT relay
instead.
(c) Moving the damaged vehicle
HINT:
If any of the following applies, tow the vehicle away using a tow
truck lorry.

One or more of the high±voltage components and cables
is damaged.

The driving, traction, or fuel system is damaged.

The READY light is not lit when you turn ignition key to the
ON position.
NOTICE:

Before towing the vehicle away using a break down
lorry, disconnect the cable from the negative (±) ter-
minal of the auxiliary battery and remove the service
plug.
Only if none of the above applies and you see no prob-
lems that might affect the driving operation, you are
allowed to drive the vehicle away from the place of ac-
cident.

Preform the procedure below if the READY light goes
off or you detect an abnormal noise, abnormal smell,
or strong vibration while traveling:
(1) Park the vehicle in a safe place.
(2) Move the shift lever to the P position and engage
the parking brake.
(3) Disconnect the cable from the negative (±) terminal
of the auxiliary battery.
(4) Remove the service plug with insulated gloves on.

± INTRODUCTIONFOR ALL OF VEHICLES
IN±19
19 Author: Date:
2001 PRIUS (RM778U)
(d) Actions required after moving the damaged vehicle
If you see any liquid on the road surface, it could be the leakage
of the highly alkaline electrolyte.
Wearing rubber gloves and goggles, apply a red litmus paper
to the liquid. If the litmus paper turns blue, neutralize the liquid
using the saturated boric acid solution and reapply a red litmus
paper to make sure that it does not turn blue. Then wipe the liq-
uid off from the road surface using waste rags, etc.
(e) Items to be prepared (When repairing damaged vehicles)

Protective clothing (Insulated gloves, rubber
gloves, goggles, and safety shoes)

Saturated boric acid solution 20 L (Procure 800 g of
boric acid powder, put it into a container, and dis-
solve it in water.)

Red litmus paper

Waste rags or old towels (For wiping off the electro-
lyte)

Vinyl tape (For insulating cable)

Electrical tester
(f) Precautions to be observed when servicing the damaged
vehicle:
(1) Wear insulated or rubber gloves, goggles, and safe-
ty shoes.
(2) Do not touch a bare cable that could be a high±volt-
age cable. If you need to touch it, or if you have a
danger of making an accidental contact, wear insu-
lated gloves, measure the voltage between the
cable and the body ground using an electrical tes-
ter, and insulate the cable using a vinyl tape.
(3) Check the HV battery and nearby area for leakage.
If you find any liquid, it could be the leakage of the
highly alkaline electrolyte. Wear rubber gloves and
goggles, and then apply a red litmus paper to the
leak. If the litmus paper turns blue, neutralize the liq-
uid using the saturated boric acid solution and reap-
ply a red litmus paper to make sure that it does not
turn blue. Then wipe the liquid off using waste rags
etc.
(4) If the electrolyte adheres to your skin, wash the skin
immediately using the saturated boric acid solution
or large amounts of water. If the electrolyte adheres
to an article of clothing, take it off immediately.
(5) If the electrolyte comes into contact with your eyes,
call out loudly for help. Do not rub your eyes but
wash them with the saturated boric acid solution or
large amounts of water and seek medical care.

B04758
IN±20
± INTRODUCTIONFOR ALL OF VEHICLES
20 Author: Date:
2001 PRIUS (RM778U)
(6) If a damage to any of the high±voltage components
and cables is suspected, cut the high±voltage cir-
cuit using the procedure below:

Move the shift lever to the P position and en-
gage the parking brake.

Remove the ignition key. Then disconnect the
cable from the negative (±) terminal of the
auxiliary battery.

Wear insulated gloves, and then remove the
service plug.

If you cannot remove the service plug due to
damage to the rear portion of the vehicle, re-
move the HV fuse or IGCT relay instead.
(g) Precautions to be taken when disposing of the vehicle
When scrapping the vehicle, remove the HV battery from
the vehicle and return it through the route specified by the
manufacturer. The same applies to any damaged HV bat-
tery.
(h) Precautions to be observed when towing
Tow the damaged vehicle with its front wheels or its front
and rear wheels lifted off the ground.
NOTICE:
Towing the damaged vehicle with its front wheels on the
ground may cause the motor to generate electricity. This
electricity could, depending on the nature of the damage,
leak and cause a fire.
(i) Towing with 4 wheels on the ground
NOTICE:

If you have to tow the damaged vehicle using a rope,
do it at a speed below 30 km/h. Such towing operation
is allowed only to cover very short distance, such as
the distance to a tow truck lorry, for example.

Set the ignition switch to the ACC position and shift
lever to the N position.

If you detect any abnormality in the damaged vehicle
during the towing operation, stop the towing opera-
tion immediately.
(j) Towing eyelet
(1) Install the hook.
(2) Hook a rope onto the illustrated point for towing.

BO4111
Negative Cable
± INTRODUCTIONFOR ALL OF VEHICLES
IN±21
21 Author: Date:
2001 PRIUS (RM778U)
7. FOR VEHICLES EQUIPPED WITH SRS AIRBAG AND
SEAT BELT PRETENSIONER
(a) The PRIUS is equipped with an SRS (Supplemental Re-
straint System), such as the driver airbag, front passen-
ger airbag assembly, side airbag assembly and seat belt
pretensioner.
Failure to carry out service operations in the correct se-
quence could cause the supplemental restraint system to
unexpectedly deploy during servicing, possibly leading to
a serious accident.
Further, if a mistake is made in servicing the supplemental
restraint system, it is possible the SRS may fail to operate
when required. Before servicing (including removal or
installation of parts, inspection or replacement), be sure
to read the following items carefully, then follow the cor-
rect procedure described in this manual.
(b) GENERAL NOTICE
(1) Malfunction symptoms of the supplemental re-
straint system are difficult to confirm, so the diag-
nostic trouble codes become the most important
source of information when troubleshooting. When
troubleshooting the supplemental restraint system,
always inspect the diagnostic trouble codes before
disconnecting the battery (See page DI±497).
(2) Work must be started after 90 seconds from the
time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (±) terminal cable is discon-
nected from the battery.
(The supplemental restraint system is equipped
with a back±up power source so that if work is
started within 90 seconds of disconnecting the neg-
ative (±) terminal cable from the battery, the SRS
may deploy.)
When the negative (±) terminal cable is discon-
nected from the battery, memory of the clock and
audio systems will be cancelled. So before starting
work, make a record of the contents memorized by
the each memory system. Then when work is fin-
ished, reset the clock and audio systems as before.
To avoid erasing the memory of each memory sys-
tem, never use a back±up power supply from anoth-
er battery.

± INTRODUCTIONFOR ALL OF VEHICLES
IN±27
27 Author: Date:
2001 PRIUS (RM778U)
(h) AIRBAG SENSOR ASSEMBLY
(1) Never reuse the airbag sensor assembly involved
in a collision when the SRS has deployed.
(2) The connectors to the airbag sensor assembly
should be connected or disconnected with the sen-
sor mounted on the floor. If the connectors are con-
nected or disconnected while the airbag sensor as-
sembly is not mounted to the floor, it could cause
undesired ignition of the supplemental restraint sys-
tem.
(3) Work must be started after 90 seconds from the
time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (±) terminal cable is discon-
nected from the battery, even if only loosing the set
bolts of the airbag sensor assembly.
(i) WIRE HARNESS AND CONNECTOR
The SRS wire harness is integrated with the instrument
panel wire harness assembly. All the connectors in the
system are a standard yellow color. If the SRS wire har-
ness becomes disconnected or the connector becomes
broken due to an accident, etc., repair or replace it as
shown on page RS±66.