1997 TOYOTA SUPRA lock

- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-637
865 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
1 Check operation of luggage room light.
CHECK:
Check that luggage room light goes off when luggage room light switch is pushed, and comes on when switch
is not pushed.
NG Check and repair luggage compartment door
courtesy light circuit (See page DI-636).
OK
2 Check for open in harness and connector between theft deterrent and door lock
ECU and luggage compartment door courtesy switch (See page IN-28).
NG Repair or replace harness or connectors.
OK
Check and replace theft deterrent 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 matrix chart (See page DI-615).

I02553
Door Lock Motor and Unlock
Detection Switch RHTheft Deterrent and
Door Lock ECU
Door Lock Motor and Unlock
Detection Switch LH W-B W-BL-Y
LSWD
L-W L-W
W-B
IH
IE
IL1
IJIDIL1
ID18
21
1
16
15 110 1642
3
2
412V
12V T13
3 W-BG-B
G-BLSWP DI-638
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
866 Author
: Date
:
1997 SUPRA (RM502U)
Door Unlock Detection Switch Circuit
CIRCUIT DESCRIPTION
The door unlock detection switch goes off when the door lock knob is operated to the lock position, and
comes on when the door lock knob is operated to the unlock position.
WIRING DIAGRAM
DI4XA-01

I02554
Disconnect
1
3
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-639
867 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
1 Check door unlock detection switch.
PREPARATION:
(a) Remove the door trim.
(b) Disconnect door lock motor and door unlock detection
switch connector.
CHECK:
Check continuity between terminals 1 and 3 of door unlock
detection switch connector, when door lock knob is operated to
the lock side and to the unlock side.
OK:
Switch conditionTerminal No. to continuity
Door unlock1 - 3
Door lock-
NG Replace door unlock detection switch.
OK
2 Check harness and connector between theft deterrent and door lock ECU and
door unlock detection switch, door unlock detection switch and body ground
(See page IN-28).
NG Repair or replace harness or connector.
OK
Check and replace theft deterrent and door
lock 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 matrix chart (See page DI-615).

I02555
Door Courtesy Switch LH
Door Courtesy
Switch RHTheft Deterrent and
Door Lock ECU
W-BR-B R-B R-B DSWD
DSWP R-L R-L
W-B233
3
247 15
19 IC2 IF2
IF312V
12V T13
BI
IG
DI-640
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
868 Author
: Date
:
1997 SUPRA (RM502U)
Door Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The door courtesy switch goes on when the door is opened and goes off when the door is closed.
WIRING DIAGRAM
DI4XB-01

- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-641
869 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
1 Check operation of open door warning light.
CHECK:
Check that open door warning light comes on when each door is opened, and goes off when all doors are
closed.
NG Check and repair open door warning light
circuit.
OK
2 Check for open in harness and connector between theft deterrent and door lock
ECU and door courtesy switch (See page IN-28).
OK Check and replace theft deterrent ECU. *1
NG
Repair or replace harness or connector.
*
1: When there is a malfunction that the theft deterrent system cannot be set, proceed to the next numbered
circuit inspection shown on matrix chart (See page DI-615).

I02556
Engine Hood Courtesy
SwitchTheft Deterrent and
Door Lock ECU
W-BGR
DSWH GR1412V
GR
EAIB6 IF3
2
14
9
T13
DI-642
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
870 Author
: Date
:
1997 SUPRA (RM502U)
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
DI4XC-01

I02557
1
2
Disconnect
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-643
871 Author
: Date
:
1997 SUPRA (RM502U)
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 lockTerminal No. to continuity
Lock-
Unlock1 - 2
NG Replace engine hood courtesy switch.
OK
2 Check harness and connector between theft deterrent and door lock ECU and
switch, switch and body ground (See page IN-28).
NG Repair or replace harness or connector.
OK
Check and replace theft deterrent and door
lock ECU (See page IN-28).

I02549
Luggage Compartment Door
Key Lock and Unlock SwichTheft Deterrent and Door Lock ECU
LUG
IE1
W-B
BJ
1L4
L
912V T13
2
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-633
861 Author
: Date
:
1997 SUPRA (RM502U)
Luggage Compartment Door Key Lock and Unlock Switch
Circuit
CIRCUIT DESCRIPTION
The luggage compartment door key lock and unlock switch goes on when the back door key cylinder is
turned to the unlock side with the key.
WIRING DIAGRAM
DI4X8-01