TOYOTA PRIUS 2001 Service Repair Manual

I12020
I12021
BE±84
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2001 PRIUS (RM778U)
2. CHECK BATTERY CAPACITY
HINT:

Make sure to use the TOYOTA electrical tester.

With the battery unloaded, judge can not be made wheth-
er the battery is available or not on the test.

When the transmitter is faulty, the energy amount left in
the battery might not be checked correctly.

On the lithium battery used for the transmitter, the voltage
more than 2.5 V with the battery unloaded is shown on the
tester until the energy is completely consumed.
Accordingly when inspecting the energy amount left in the
battery, it is necessary to measure the voltage when the
battery is loaded. (1.2 kW).
(a) Remove the cover using a (±) driver.
(b) Remove the battery (lithium battery) from the transmitter.
(c) Connect the lead to the (±) terminal of the transmitter and
install the battery.
(d) Connect the (+) tester to the (+) battery (lithium battery),
and (±) tester to the lead respectively.
(e) Press one of the transmitting switches on the transmitter
for approx. 1 second.
(f) Press the transmitting switch on the transmitter again to
check the voltage.
Standard: 2.1 V or more

I12038
Wire harness side:
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±85
2001 PRIUS (RM778U)
HINT:

When the temperature of the battery is low, the judge can
not be made correctly.
When the outcome of the test is less than 2.1 V, conduct
the test again after leaving the battery in the place at 18
°C for more than 30 minutes.

By auto power off function, the voltage becomes no load
voltage (more than 2.5 V) condition after 20 seconds from
the switch was pressed.
Make sure to read the voltage before of it.

High voltage might be shown 1 to 2 times after leaving the
battery, judge should be made with the voltage shown at
the 3rd time or later.
(g) Disconnect the lead.
(h) Set the battery (lithium battery) in the transmitter.
(i) Install the cover, so that the rubber cover is not distorted
or slipped off.
3. INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
(a) Disconnect the connector from the receiver and inspect
the connector on the wire harness side, as shown below.
Tester connectionConditionSpecified condition
1 ± GroundConstantContinuity
5 ± GroundConstantBattery voltage
If the circuit is not as specified, inspect the circuit connected to
other parts.

I12073
From back side: BE±86
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2001 PRIUS (RM778U)
(b) Connect the wire harness side connector to the receiver
and inspect the wire harness side connector from the
back side, as shown below.
Tester connectionConditionSpecified condition
3 ± GroundNormal mode10 ± 14 V
2 ± Ground
Ignition switch position OFF
Key removed
Transmitter ON
About 6 ± 7 V
If circuit is as specified, replace the receiver.
If the circuit is not as specified, inspect the circuit connected to
other parts.

BE1D9±02
N30017
N13468
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±87
2001 PRIUS (RM778U)
REPLACEMENT
1. REPLACE TRANSMITTER (LITHIUM) BATTERY
NOTICE:
Special caution should be taken for handling each compo-
nent as they are precision electronic components.
(a) Using a screwdriver, remove the cover.
NOTICE:
Do not pry out the cover forcibly.
HINT:
Push the cover with a finger as shown in the illustration, so that
there becomes clearance, then pry out the cover from that
clearance.
(b) Remove the transmitter.
(c) Remove the battery (lithium battery).
NOTICE:
Do not push the terminals with a finger.
If prying up the battery (lithium battery) forcibly to re-
move, the terminals are deformed.
(d) Install a battery (lithium battery) as shown in the illustra-
tion.
NOTICE:
Face the battery upward. Take care not to deform the termi-
nals.
(e) Check that the rubber is not distorted or slipped off, and
install the cover.

BE±88
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2001 PRIUS (RM778U)
2. REPLACE DOOR CONTROL RECEIVER AND TRANS-
MITTER
NOTICE:
When replacing the door control receiver and transmitter,
registration of recognition code is necessary because they
are provided as single components.
(a) Select which operation mode should be performed from
the following modes.
Add mode
Rewrite mode
Prohibition mode
Confirmation mode
HINT:
The add mode is used to retain codes already registered
while you register new recognition codes. This mode is
used when adding a transmitter. However, if the number
of registered codes exceeds 4 codes, previously regis-
tered codes are correspondingly erased in order, starting
from the first registered code.
The rewrite mode is used to erase all previously regis-
tered codes and register only new recognition codes.
The prohibition mode is used to erase all registered codes
and cancels the wireless door lock function. Use this
mode when the transmitter is lost.
The confirmation mode is for confirming how many recog-
nition codes are already registered before you register
additional recognition codes.
(b) Follow the chart on the following pages to register the
transmitter recognition code at the wireless door lock con-
trol receiver.
HINT:
When procedure is out of the specified, the operation re-
turns to normal operation.
Maximum 4 recognition codes can be registered.

± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±89
2001 PRIUS (RM778U)
Start registration of recognition code
The vehicle should be in the following conditions.

The key is not inserted in the ignition key cylinder.

Driver's door is OPEN. (Other doors are CLOSED)

Driver's door is UNLOCKED.
Insert the key into the ignition key cylinder, then pull it out. (Rerform this twice within 5 seconds)
Close and open the door (manual operation) 2 times.
1st time 2nd time
OPEN CLOSE
Close the all door and insert the key into the ignition key cylinder.
Within
40 secs.
Within
40 secs.
Insert the key into the ignition key cylinder, then pull it out.
1st time 2nd time
OPEN CLOSE
Again close and open the door (manual operation) 2 times.

BE±90
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2001 PRIUS (RM778U)
Within
3 secs.
Turn the ignition switch from ON to LOCK at approx. 1 sec. interval 1 to 5 times to select the mode.
Pull out the key from the ignition key cylinder.
When add mode or rewrite mode
is selected.When confirmation
mode is selected.
ON
ONON
LOCK
LOCKLOCK
Approx.
1 sec.Approx.
1 sec. Approx. 1 sec.Approx.
1 sec.Approx.
1 sec.
Add mode
Rewrite modeConfirmation mode
ON ± LOCK change occurs 1 time
ON ± LOCK change occurs 2 timesON ± LOCK change occurs 3 times
Door control relay automatically performs
the LOCK±UNLOCK operation once
or twice at 1 sec. interval to inform the
operator that either the add mode or
rewrite mode has been selected.
LOCK±UNLOCK occurs once
LOCK±UNLOCK occurs twice
Indicates that add mode has been selected.
Indicates that rewrite mode has been
selected.
1 sec.
LOCK
1 sec.1 sec.
LOCK
UNLOCK
UNLOCK
LOCK
2 secs.2 secs.
UNLOCK Door control relay automatically performs
the LOCK±UNLOCK operation 1 to 4 times
at 2 sec. interval to inform the operator of
the number of the registered codes.
HINT:
When the number of the registered code
is 0, the operation is automatically
performed 5 times.
Example:
When the operation is performed twice, it
directs that 2 types of recognition code
have been registered.
1st time 2nd time
Registration of recognition code (Confirmation
mode and prohibition mode) is completed.
ON
LOCK
Approx.
1 sec.Approx.
1 sec.
Prohibition mode
ON ± LOCK change occurs 5 times
When prohibition
mode is selected.

± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±91
2001 PRIUS (RM778U)
Door control relay performs LOCK±UNLOCK operation 5 times at a 1 sec.
interval to inform the operator that prohibition mode has been selected.
Press one of 3 switches on the transmitter.
Door control relay automatically performs LOCK±UNLOCK operation once or
twice at a 1 sec. interval to inform the operator that the receiver has received the
signal from the transmitter.
LOCK±UNLOCK occurs once
LOCK±UNLOCK occurs twice Registration of recognition code is completed
Registration of recognition code has not been completed.

Recognition code received first time and second time did not match.

When selecting add mode, a registered recognition code was received.
Proceed to continue registration
If even one of the following conditions is satisfied, registration of recognition
codes is completed.

40 secs. elapses since the door control relay response.

The driver's door is opened.

The key plate is inserted in the ignition key cylinder.

4 type recognition codes are registration at one time.
Registration of recognition codes (add mode or rewrite mode) is completed.
Within
3 secs. Within
40 secs.
LOCK
Approx.
1 sec.Approx.
1 sec.
When prohibition
mode is selected.
Press the lock and unlock switches on the transmitter switch simultaneously for
more than between 1 sec. or more and 1.5 sec. below.
If LOCK±UNLOCK operation can not be performed at all, the mode returns to the
normal mode, then start with ºStart registration of recognition codeº.
Proceed to finish registration
Within 40 secs.
Within
3 secs.
UNLOCK

I11900
LEFT SIDE RIGHT SIDE
UP
LEFTRIGHT OFF
DOWN
BE1UW±01
N21376
12345678910
Wire Harness Side
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
BE±93
2001 PRIUS (RM778U)
INSPECTION
1. INSPECT LEFT SIDE MIRROR SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
OFF±No continuity
UP4 ± 8
6 ± 7Continuity
DOWN4 ± 7
6 ± 8Continuity
LEFT5 ± 8
6 ± 7Continuity
RIGHT5 ± 7
6 ± 8Continuity
2. INSPECT RIGHT SIDE MIRROR SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
OFF±No continuity
UP3 ± 8
6 ± 7Continuity
DOWN3 ± 7
6 ± 8Continuity
LEFT5 ± 8
6 ± 7Continuity
RIGHT2 ± 7
6 ± 8Continuity
If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.
3. INSPECT MIRROR SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.
Tester connectionConditionSpecified condition
7 ± GroundConstantContinuity
8 ± GroundIgnition switch position LOCKNo voltage
8 ± GroundIgnition switch position ACC or ONBattery voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.

I01811
1
3
I01812
3 1
I01813
5 3
I01814
5
3
BE±94
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
2001 PRIUS (RM778U)
4. INSPECT MIRROR MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to terminal 1, and check that
the mirror turns right side.
(b) Reverse the polarity, and check that the mirror turns left
side.
(c) Connect the positive (+) lead from the battery to terminal
3 and the negative (±) lead to terminal 5, and check that
the mirror turns to the downward.
(d) Reverse the polarity, and check that the mirror turns to the
upward.
If operation is not as specified, replace the mirror assembly.