2001 TOYOTA PRIUS door lock

DI±718
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check door lock motor (See page BE±62).
NG Replace the door lock motor.
OK
2 Check wireharness and connector between door lock motor and body ECU.
NG Repair or replace wireharness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table
(See page DI±683).

I15498
23 5
7
8 9Body ECU
S B9
B8PRG
RDA R±G
B±R
LB8 +B
PRG
RDAR±GFFJ27
J/C W5
Wireless Door
Control Receiver
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±733
2001 PRIUS (RM778U)
Wireless door lock tuner circuit
CIRCUIT DESCRIPTION
The signal from the transmitter will be input to the body ECU through RDA line. RDA line is diagnosed by
the body ECU, so check DTC also in case of the failure of the wireless function.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check that DTC 42 is not output
NG Check the RDA line.
OK
DI7O0±01

DI±734
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
2 Check wireharness
PREPARATION:
Disconnect connectors of wireless door lock tuner and of body ECU.
CHECK:
Check continuity between terminals RCO of wireless door lock tuner and RCO of body ECU.
OK:
Continuity
NG Repair or replace wireharness
OK
3 Check the wireless door lock tuner
CHECK:
Replace the wireless door lock tuner and check if it recovers normally.
OK:
Must be recovered normally.
NG Proceed to next circuit inspection shown on
problem symptoms table.(See page DI±683)
NG
Failure of the original wireless door lock tun-
er.

DI2BM±11
I15588
P9 Power Window
Master SW
Instrument Panel J/B
J20
J/C5
1
IG CPUB
B L±Y 1
IG1
C4 W±R
R±L 3
IC1
8
IC1 L±Y L±YC
J25 B
J24 4
2D 2
2G
W±R
R±L
C
R±L 20A PWR1
5A AM1
I15 Ignition SwitchIG1 Relay
IG1 AM1
B±Y W±G11
2J
1
2H
3
2B
24
L±Y
6
2D12 3
510A GAUGE
10
2K
W
15A DOME
7
1J8
2K
Engine Room J/B
2
1BBFL Block No. 1
1
F11100A DC/DC
B±G
F18 FL Block No. 2
120A MAIN 1
F121
F13
1
Battery
ID IGA J11 J/C
W±B
J17 J/CW±B1
IC1
W±B9
E Instrument Panel J/B
AJ/C DI±740
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
2001 PRIUS (RM778U)
CIRCUIT INSPECTION
Power source circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the driver door ECU.
WIRING DIAGRAM

I15471
LSWD D13
Door Unlock Detection
Switch Front LH
4
W
10 3 W±B
AIG1 J242P9 Power Window
Master SW
W±B
A J24
Instrument
Panel J/B J11
J/C
ID 8
2D W±BW±B
A 8
2K J/C
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±743
2001 PRIUS (RM778U)
Door unlock detection switch circuit
CIRCUIT DESCRIPTION
The door unlock detection switch is built in the door lock motor assembly. This switch is ON when the door
lock knob is in the unlock position and OFF when the lock knob is in the lock position. The ECU detects the
door lock knob conditions is this circuit. It is used as one of the operating conditions for the key confinement
prevention function.
WIRING DIAGRAM
DI2BP±08

DI±744
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check door unlock detection switch (See page BE±62).
NG Replace the door lock motor.
OK
2 Check wireharness and connector between door unlock detection 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).

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).