2001 TOYOTA PRIUS Service Repair Manual

I15497
1 21013Body ECU
HCTY B8
IE1
A A
AJ7
J/C
R±W
W±B R±W
J1
J/C
IEE2
Engine Hood
Courtesy SW
W±B
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±725
2001 PRIUS (RM778U)
Engine Hood Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The engine hood courtesy switch is built into the engine hood lock assembly and goes ON when the engine
hood is opened and goes OFF when the engine hood is closed.
WIRING DIAGRAM
DI7NV±01

I00298
1 (+)
2 (±)
DI±726
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check engine hood courtesy switch.
PREPARATION:
(a) Remove engine hood lock assembly.
(b) Disconnect engine hood courtesy switch connector.
CHECK:
Check continuity between terminals 1 and 2 when engine hood
lock is locked and unlocked.
OK:
Engine hood lockTester connectionSpecified condition
LOCK±No continuity
UNLOCK1 ± 2Continuity
NG Replace engine hood courtesy switch.
OK
2 Check harness and connector between body ECU and switch, switch and body
ground (See page IN±41).
NG Repair or replace harness or connector.
OK
Check and replace body ECU (See page
IN±41).

I15491
Body ECU
1414 J/C
LCTY
B8
IF1
J30D D
J30
R±W R±W
R±W
L6
Luggage
Compartment
Light SW
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±727
2001 PRIUS (RM778U)
Luggage Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The luggage courtesy switch goes on when luggage compartment door is opened and goes off when lug-
gage compartment door is closed.
WIRING DIAGRAM
DI7NW±01

DI±728
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check luggage courtesy switch (See page BE±27).
NG Replace the luggage courtesy switch.
OK
2 Check wire harness and connector between luggage courtesy switch and body
ECU (See page IN±41).
NG Repair or replace wire harness or connector.
OK
Proceed to next circuit inspection shown on
problem symptoms table (See page
DI±683).

I15494
56
18Body ECU
YB8RX
IG1 P9
Power Window
Master SW
Y MPX1
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±729
2001 PRIUS (RM778U)
Power window master switch circuit
CIRCUIT DESCRIPTION
Power window master switch circuit can be checked using DTC check. (See page DI±765)
WIRING DIAGRAM
DI2BN±05

DI±730
± DIAGNOSTICSBODY CONTROL SYSTEM
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Check the power window master switch circuit using DTC check.
(See page DI±765)
OK Proceed to next circuit inspection shown on
problem symptom table
(See page DI±683).
OK
2 Check the power window master switch (See page BE±56).
NG Replace the power window master switch.
OK
3 Check wireharness and connector between power window master switch and
body ECU.
NG Repair or replace wireharness or connector.
OK
Proceed to next circuit inspection shown on
problem symptom table
(See page DI±683).

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