TOYOTA PRIUS 2001 Service Repair Manual

I15481
1
2
3
5 614
15
6 D10
Door Lock Control
SW Front RH
IG J17
J/CBody ECU
UL1 L1
B9 B9
G±B
R±B G±B
R±BIN1
IQ1
IN1
UNLOCKLOCK
W±B
W±B
W±BW±BA
A A A
J18 J19
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±711
2001 PRIUS (RM778U)
Door lock control switch circuit
CIRCUIT DESCRIPTION
Door lock control switch circuit can be checked using DTC check. (Refer to DI±765)
WIRING DIAGRAM
DI2EY±04

DI±712
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check the door lock control switch (See page BE±62).
NG Replace the door lock control switch.
OK
2 Check wireharness and connector between door lock control switch 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).

I15482
16
11
12 1
2 4 7
7UL2
L2
B9 B9
IN1
BB1
J19 J18J17
J/C
A A
A
IGL±B
G L±B
G UNLOCK
LOCK W±B W±B
W±BBody ECU
D14
Door Key Lock and Unlock Switch
IN1
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±713
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.
WIRING DIAGRAM
DI6R6±04

DI±714
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check the door key lock and unlock switch (See page DI±708).
NG Replace the door key lock and unlock switch.
NG
2 Check wireharness and connector between door key lock and unlock 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).

I15480
17 2
3 4 7
1
1
1
347
1
18 12
7
2W A
IGA
A
A
B
B
BLSWP B8
IN1 BB1 J19 J18
BB1ID2
J22
J22
B8 J23
IF1 BA1
BA1
BIBB1Body ECU
W±B
W±LW
W±B
W±B
W±B
W±B W±L W±L
W±L
W±L W±L
W±B
W±B
W±LLSR J17
J/CD12
Door Unlock Detection Switch
Rear RH
D11
Door Unlock Detection Switch
Rear LHD14
Door Unlock
Detection Switch
Front RH
J/C
J/C
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±715
2001 PRIUS (RM778U)
Door unlock detection switch
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
DI7NT±01

DI±716
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check door unlock detection switch (See page DI±710).
NG Replace the door lock motor.
OK
2 Check wireharness and connector between door unlock detection switch 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).

I15483
10
9
16 4 7
5 1
2
6
5
4
3
2
16 2 6 2 6 5
8
9ACTD B9Body ECU
R
G
G R
GG
G G
GG RR
RR
RRG
R2I
2J J14
J14 J14
J15
J15
J15
J15 IG1
IC1
IQ1
BB1
BA1A
B
BAB C C
2L
2L D13
Door Lock Motor Front LH
D14
Door Lock Motor Front RH
D12
Door Lock Motor Rear RH
D11
Door Lock Motor Rear LH
Instrument Panel J/B IQ1
BB1
BA11ACT+
ACT±
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±717
2001 PRIUS (RM778U)
Door lock motor circuit
WIRING DIAGRAM
DI7NS±01

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).

I15490
PCTY 12 13
3 3
1A A
1
6
63Body ECU
B8
ID2
J12 J13
IB12K
2L
2K R±W
R±G
R R±W
R±W
R±W
R±WR±W F D J16
J/CInstrument
Panel J/B
D7
Door
Courtesy
SW
Front RHD6
Door
Courtesy
SW
Front LHD8
Door
Courtesy
SW
Rear LHD9
Door
Courtesy
SW
Rear RHDCTY
RCTY
1
1 1J/C
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±719
2001 PRIUS (RM778U)
Door Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The door courtesy switch goes on when the door is opened and goes off when door is closed.
WIRING DIAGRAM
DI7NU±01

DI±720
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check courtesy switch (See page BE±27).
NG Replace the courtesy switch.
OK
2 Check that there is a grounding malfunction caused by looseness of the tighten
screw.
NG Install screw.
OK
3 Check wireharness and connector between courtesy 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).