Lexus ES300 (1997 year). Manual — part 412
N22068
Theft Deterrent ECU
LUG
9
G–W
C
C
J34
J/C
G–W
2
G–W
2
1
Luggage Compartment
Door Key Lock and
Unlock Switch
W–B
J34
T4
IF2
BP
AB0119
N20683
I00636
ON
1
(+)
(–)
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
DI–425
577
1997 LEXUS ES300 (RM511U)
Luggage Compartment Door Key Lock and Unlock Switch Circuit
CIRCUIT DESCRIPTION
The luggage compartment door key lock and unlock switch goes on when the luggage compartment door
key cylinder is turned to the unlock side with the key.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check voltage between terminal 1 of luggage compartment door key lock and
unlock switch connector and body ground.
PREPARATION:
(a)
Remove luggage compartment door trim.
(b)
Turn ignition switch ON.
CHECK:
Measure voltage between terminal 1 of luggage compartment
door key lock and unlock switch connector and body ground,
when the key is turned to the unlock side and not turned.
OK:
Key operation
Voltage
Turned to the unlock side
0 V
Not turned
Battery positive voltage
OK
Check and replace theft deterrent ECU.*1
DI024–01
N20682
2
1
DI–426
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
578
1997 LEXUS ES300 (RM511U)
NG
2
Check luggage compartment door key lock and unlock switch.
PREPARATION:
Disconnect luggage compartment door key lock and unlock
switch connector.
CHECK:
Check continuity between terminals 1 and 2, when the key is
turned to the unlock side and not turned.
OK:
Key operation
Tester connection
Specified condition
Turned to unlock
1 – 2
Continuity
Not turned
–
No continuity
NG
Repair or replace luggage compartment door
key lock and unlock switch.
OK
3
Check harness and connector between theft deterrent ECU and key lock and un-
lock switch, key lock and unlock switch and body ground (See page
).
NG
Repair or replace harness or connector.
OK
Check and replace theft deterrent ECU.
*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
N22069
Theft Deterrent ECU
DSWL
T4
5
R–Y
6
IF2
R–Y
2
Luggage Compartment
Door Courtesy Switch
1
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
DI–427
579
1997 LEXUS ES300 (RM511U)
Luggage compartment Door Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The luggage compartment door courtesy switch goes on when luggage compartment door is opened and
goes off when the luggage compartment door is closed.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check operation of luggage compartment door courtesy light.
CHECK:
Check that luggage compartment door courtesy light goes off when luggage compartment door courtesy
switch is pushed, and comes on when switch is not pushed.
NG
Check and repair luggage compartment door
courtesy light circuit (See page
OK
DI025–01
DI–428
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
580
1997 LEXUS ES300 (RM511U)
2
Check for open in harness and connector between theft deterrent ECU and lug-
gage compartment door courtesy switch (See page
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
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