2001 TOYOTA PRIUS Service Repair Manual

I15496
613Body ECU
A
B9
IND C7
Center Cluster SW
(Center Cluster Module Control)
LG±BLG±B J27
J/C
A
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±709
2001 PRIUS (RM778U)
Indicator Light Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is preparing to set, this circuit lights up the indicator light. When the system
has been set, it continuously turns the indicator light on for 0.2 secs. and turns it off for 1.8 secs., thus blinking
the indicator light.
WIRING DIAGRAM
DI7NY±01

DI±710
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check indicator light. (center cluster module control)
NG Replace center cluster module control.
OK
2 Check harness and connector between body ECU and indicator light, indicator
light and body ground (See page IN±41).
NG Repair or replace harness or connector.
OK
Check and replace body ECU.*1
*1: When there is a malfunction that the theft deterrent system
cannot be set, proceed to the next numbered circuit inspection
shown on problem symptom table (See page DI±683).

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