2001 TOYOTA PRIUS Door key lock

I15472
KUL D13
Door Key Lock and
Unlock Switch
5 615
3 W±B
AIG1 J242P9 Power Window
Master SW
W±B
A J24
Instrument Panel J/BJ11
J/C
ID 8
2D W±BW±B A 8
2KKL
6 L±B
G±Y UNLOCK
LOCK J/C
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±745
2001 PRIUS (RM778U)
Door key lock and unlock switch circuit
CIRCUIT DESCRIPTION
The door key lock and unlock switch is built in the door key cylinder. When the key is turned to the lock side,
terminal 3 of the switch is grounded and when the key is turned to the unlock side, terminal 2 of the switch
is grounded.
Door key lock and unlock switch can be checked using DTC check. (Refer to DI±765)
WIRING DIAGRAM
DI2BQ±08

DI±746
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check the door key lock and unlock switch using DTC check
(See page DI±765).
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±683).
NG
2 Check the door key lock and unlock switch (See page BE±62).
NG Replace the door key lock and unlock switch.
NG
3 Check wireharness and connector between door key lock and unlock switch and
driver door ECU.
NG Repair or replace wireharness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table
(See page DI±734).

BE16S±02
BE±2
± BODY ELECTRICALTROUBLESHOOTING
1669 Author: Date:
2001 PRIUS (RM778U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
IGNITION SWITCH:
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
Ignition switch is not set to each position.3. Ignition switch
4. Power source circuitBE±17
±
KEY UNLOCK WARNING SWITCH:
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
Key unlock warning system does not operate.
(The buzzer sounds when the ignition key is ACC or ON)
1. Ignition Switch
2. Key Unlock Warning Switch
3. Wire Harness
4. Body ECU
5. Combination MeterBE±17
BE±17
±
±
±
HEADLIGHT AND TAILLIGHT SYSTEM:
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
Auto turn±off system does not operate when the driver's door is
opened.1. Drivers Door Courtesy Switch
2. Body ECUBE±27
DI±678
Auto turn±off system:
Headlight and taillight do not come on.1. Body ECU
2. Wire HarnessDI±678
±
Auto turn±off system:
Headlight and taillight stay on.1. Body ECU
2. Wire HarnessDI±678
±
w/o Daytime Running Light System:
SymptomSuspect AreaSee page
Only one headlight comes on.1. Bulb
2. Wire Harness±
±
ºLO±Beamº does not light (All).1. Headlight Control Relay
2. Wire HarnessBE±20
±
ºLO±Beamº does not light (One side).
1. Bulb
2. HEAD LH Fuse
3. HEAD RH Fuse
4. Wire Harness±
BE±12
BE±12
±
ºHI±Beamº does not light (All).1. Headlight Dimmer Switch
2. Wire HarnessBE±20
±
ºHI±Beamº does not light (One side).
1. Bulb
2. HEAD LH Fuse
3. HEAD RH Fuse
4. Wire Harness±
BE±12
BE±12
±
ºFlashº does not light.
1. HEAD LH Fuse
2. HEAD RH Fuse
3. Headlight Dimmer Switch
4. Wire HarnessBE±12
BE±12
BE±20
±
ºFlashº does not light.1. Bulb
2. Wire Harness±
±

± BODY ELECTRICALTROUBLESHOOTING
BE±9
1676 Author: Date:
2001 PRIUS (RM778U)
POWER DOOR LOCK CONTROL SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
All the doors cannot be locked or unlocked.
(Power Window Control System is normal.)1. Door Lock Control Switch
2. Body ECU
3. Wire HarnessBE±62
DI±678
±
Only one side door lock control does not operate.1. Door Lock Motor
2. Wire HarnessBE±62
±
Door key related function does not operate.
1. Door Key Lock and Unlock Switch
2. Body ECU
3. Wire HarnessBE±62
DI±678
±
Key confinement prevention function does not operate.
1. Key Unlock Warning Switch
2. Door Courtesy Switch
3. Body ECU
4. Wire HarnessBE±17
BE±27
DI±678
±
THEFT DETERRENT SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
HINT:
Troubleshooting of the theft deterrent system is based on the premise that the door lock control system is
operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that
the door lock control system is operating normally.
SymptomSuspect AreaSee page
The theft deterrent system cannot be set
1. Indicator light circuit
2. ECU power source circuit
3. Key unlock warning switch circuit
4. Door key lock and unlock switch circuit
5. Door courtesy switch circuit
6. Door unlock detection switch circuit
7. Engine hood courtesy switch circuitDI±704
DI±685
DI±695
DI±724
DI±714
DI±710
DI±720
The indicator light does not blink when system is set.Indicator light circuitDI±704
When the system is set
(The system does not operate when the rear door is unlocked).Door unlock detection switch circuitDI±710
When the system is set
(The system does not operate when the luggage compartment
door is opened by a method other than the key).
Luggage compartment door courtesy switch circuitDI±722
When the system is set
(The system does not operate when the engine hood is lifted).Engine hood courtesy switch circuitDI±720
While the system is in warning operation
(Horns do not sound).Horn relay circuitDI±697
While the system is in warning operation
(Headlights do not flash).Headlight control relay circuitDI±693
While the system is in warning operation
(Taillights do not flash).Taillight control relay circuitDI±691
While the system is in warning operation
(The door lock is not locked).Door unlock detection switch circuitDI±710
System is still set even when a rear door is openDoor courtesy switch circuitDI±714
Even when the system is not set
(Horns sound).Horn relay circuitDI±697

BE1W7±01
I03147
I11689
LOCK
UNLOCK
I11690
LOCK
UNLOCK
I11689UNLOCKLOCK
I11690UNLOCK LOCK BE±62
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION
1. INSPECT DOOR LOCK CONTROL SWITCH CONTINU-
ITY
Switch positionTester connectionSpecified condition
LOCK3 ± 6Continuity
OFF±No continuity
UNLOCK3 ± 5Continuity
If continuity is not as specified, replace the switch.
2. Driver 's door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
LOCK3 ± 5Continuity
OFF±No continuity
UNLOCK3 ± 6Continuity
If continuity is not as specified, replace the switch.
3. Passenger 's door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
LOCK2 ± 4Continuity
OFF±No continuity
UNLOCK1 ± 4Continuity
If continuity is not as specified, replace the switch.
4. Driver 's door:
INSPECT DOOR UNLOCK DETECTION SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
OFF (Door Lock set to
LOCK)±No continuity
ON (Door Lock set to
UNLOCK)3 ± 4Continuity
If continuity is not as specified, replace the switch.
5. Passenger 's door:
INSPECT DOOR UNLOCK DETECTION SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
OFF (Door Lock set to
LOCK)±No continuity
ON (Door Lock set to
UNLOCK)3 ± 4Continuity
If continuity is not as specified, replace the switch.

DI7T9±01
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±67
2001 PRIUS (RM778U)
PRE±CHECK
1. OUT LINE OF THEFT DETERRENT SYSTEM
When the theft deterrent system detects any theft, it informs
people around with flashing lights and sound.
This system is designed to be upgraded by featuring an option-
al glass break sensor.
All initial setting are performed in active mode. It can be
switched to passive mode by specified operation. (See step 3.
CHANGING METHOD OF PASSIVE MODE)
HINT:
There are 4 conditions in this system which are disarmed state,
arming preparation, armed state and alarm sounding.
(1) Disarmed state
When the alarming function does not oper-
ate.
When theft deterrent function is not per-
formed.
(2) Arming preparation
Time until transferring to armed state.
Theft deterrent function is not performed.
(3) Armed state
When theft deterrent function is possible.
(4) Alarm sounding:
In this condition, once theft is detected, it is in-
formed using light and sound to people around the
vehicle.
Refer to the table for alarming method or time.
Horn
Security horn
Al i th dHeadlightAlarming methodTaillight
Hazard
Interior light
Alarming time60 seconds
Alarming outputContinuous 0.4 secs. (ON)
0.4 secs. (OFF)
HINT:
Alarming output for hazard is same as the one for the hazard
on the vehicle.
In the arming condition when either of doors is unlocked with
key not in the key cylinder, force lock signal is output.

Disarmed state
Perform any of the following and the system will go no to ºArming preparationº:

With all the doors, engine hood and luggage compartment door closed, lock all doors with the key.

With all the doors, engine hood and luggage compartment door closed, lock all doors with the
wireless remote.

With all the doors, engine hood and luggage compartment door closed, open and close any of doors,
engine hood or luggage compartment door, then close and lock all doors, engine hood and luggage
compartment door.
Arming preparation
Perform the following and the system will
go on to ºArmed stateº:

Let 30 seconds elapse with all the doors,
engine hood and luggage compartment door
closed and locked.
Perform any of the following and the system
will return to ºDisarmed stateº:

Open any of the doors, engine hood or luggage
compartment door.

Unlock any of the doors.

Put the key in the ignition.

Reconnect the battery.
Armed state
Perform any of the following and the system
will return to ºDisarmed stateº:

Unlock any of the doors or open the luggage
compartment door with the wireless remote.

Unlock the doors with the wireless remote.

Put the key in the ignition and turn it to ON.
Perform any of the following and the system
will go on to ºAlarm soundingº:

Open any of the doors.

Unlock any of the doors in any way other than
with a key or the wireless remote.

Open the luggage compartment door in any way
other than with a key.

Open the engine hood.

Reconnect the battery.

When input from optional glass break sensor is
detected (Dealer option)(Key not inserted in ignition.)
Alarm sounding
The vehicle's horn and security horn will sound,
and the hazard, interior, tail and head lights flash
for 60 seconds.
After the alarm has ended, the system will
return to ºArmed stateº. Perform any of the following and the system
will return to ºDisarmed stateº:

Unlock any of the doors or open the luggage
compartment door with the wireless remote.

Unlock the doors with the wireless remote.

Put the key in the ignition and turn it to ON.
BE±68
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
2001 PRIUS (RM778U)
2. ACTIVE ARMING MODE

Perform any of the following and the system will go to Disarmed state (B):

Remove the key from the ignition, close the driver's door, then the ignition OFF.
Disarmed state (A)
Perform any of the following and the system
will return to Disarmed state (A):

Push the unlock switch on the wireless
remote.

Put the key in the lock on the driver's or the
passenger door and turn it towards unlock.

Put the key in the ignition.

Reconnect the battery.

Turn the ignition from OFF to ON.Disarmed state (B)Perform any of the following and the system
will go to Arming preparation:

Close all the doors, hood and
luggage compartment door.
Perform any of the following
and the system
will return to Disarmed state
(B):

Open any of the doors, the
hood or the
luggage compartment door.
Arming preparation
Perform any of the following
and the system
will go to Armed state:

Allow 30 seconds to elapse
with all the doors,
hood and luggage compart-
ment door closed.
Perform any of the following and
the system
will return to Disarmed state (A):

Push the unlock switch on the
wireless
remote.

Put the key in the lock on the
driver's or the
passenger door and turn it to-
wards unlock.

Put the key in the ignition.

Reconnect the battery.

Turn the ignition from OFF to
ON.
BE±70
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
2001 PRIUS (RM778U)
3. PASSIVE ARMING MODE
This mode can be switched according to the specified op-
eration.
All initially set modes (when shipped from factory) are ac-
tive mode. (No passive mode)