Lexus ES300 (1997 year). Manual — part 415
N22481
Theft Deterrent ECU
DSWD
CTY
DSWP
Door Courtesy
Switch Front LH
1
1
Door Courtesy
Switch Rear LH
1
Door Courtesy
Switch Rear RH
1
Door Courtesy
Switch Front RH
R–G
T4
T4
T4
R–G
R–G
R–G
R–G
R–G
R–G
R–W
R–W
R–W
R–B
J11
J10
E
E
E
D
D
D
J34
J34
J34
J35
J/C
2
3
1
J34
J34
J35
E
E
D
7
IP1
IP1
R–W 1
2
Diode
J/C
9
4
1S
1G
12
1S
1G
1
7
J/C
Instrument Panel J/B
Instrument Panel J/B
R–W
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
DI–437
589
1997 LEXUS ES300 (RM511U)
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
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 cir-
cuit.
DI02A–01
DI–438
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
590
1997 LEXUS ES300 (RM511U)
OK
2
Check for open in harness and connector between theft deterrent ECU and door
courtesy switch (See page
).
NG
Repair or replace harness or connector.
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
N22073
Theft Deterrent ECU
DSWH
T4
4
B
IJ1
1
B
3
B
1
Engine Hood
Courtesy Switch
2
W–B
EC
IM1
N14878
1 (+)
2 (–)
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
DI–439
591
1997 LEXUS ES300 (RM511U)
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
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 lock
Tester connection
Specified condition
LOCK
–
No continuity
UNLOCK
1 – 2
Continuity
NG
Replace engine hood courtesy switch.
OK
DI02B–01
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