TOYOTA PRIUS 2001 Service Repair Manual

I15495
3 5
26
17
53
2 2
1Y
GU
DSD SU
5
26
1 2
1Y
GU
DSD SU
5
26
1
2 1Y
GU
DSD SU
42
15
101 14 10
5 3
4B8 R±W
G±B
W
B±W
L±O
G±RR±W
G±B
W
B±W
L±O
G±R IN1
IN1
BB1
BA1B8
2J
5K
2L
2LFLU
FLD Body ECU P6
Power Window Control
SW Front RH
P8
Power Window Control
SW Rear RH
P7
Power Window Control
SW Rear LH P11
Power Window
Motor Front RH
P13
Power Window
Motor Rear RH
P12
Power Window
Motor Rear LH
Instrument Panel J/B BB1
BA1RRU
RRD
RLU
RLD
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±731
2001 PRIUS (RM778U)
Power window switch circuit
CIRCUIT DESCRIPTION
Power window switch circuit can be checked using DTC check. (Refer to DI±762)
WIRING DIAGRAM
DI7NX±01

DI±732
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check the power window switch (See page DI±726).
NG Replace the power window switch.
OK
2 Check wireharness and connector between power window switch and body ECU
(See page IN±41).
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

± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
DI±741
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check PWR1, AM1 and DOME fuse.
CHECK:
Check continuity of PWR1, AM1 and DOME fuse.
OK:
Continuity
NG Replace the failure fuse.
OK
2 Check voltage between terminals B, CPUB, IG and GND of driver door ECU con-
nector.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals IG, and GND.
OK:
Voltage: 10 ± 14V
PREPARATION:
(a) Turn ignition switch OFF.
(b) Disconnect the driver door ECU connector.
CHECK:
Measure voltage between terminals B, CPUB and GND.
OK:
Voltage: 10 ± 14V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±734).
NG

DI±742
± DIAGNOSTICSDRIVER DOOR CONTROL SYSTEM
2001 PRIUS (RM778U)
3 Check wireharness and connector between ECU and body ground.
NG Repair or replace wireharness or connector
OK
Check and repair wireharness and connector
between ECU and battery.

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