Lexus SC300 / Lexus SC400. Manual — part 190
NG
OK
1
2
Proceed to next circuit inspection shown on
matrix chart (See page
)
Check luggage compartment door opener
main switch and opener switch.
Check harness and connectors between ECU
and main switch, opener switch and body
ground (See page
).
Repair or replace harness or
connector.
NG
OK
Replace luggage compartment door
opener main switch and/or opener
switch.
WIRING DIAGRAM
Luggage Compartment Door Opener Main Switch and
Opener Switch Circuit
CIRCUIT DESCRIPTION
The luggage compartment door opener main switch is off when it
is pushed in, and the luggage compartment door opener switch is
on when it is pulled.
The ECU energizes the luggage compartment door opener motor
only when the main switch and opener switch are on together.
DIAGNOSTIC CHART
DIAGNOSTIC CHART
BE–390
–
BODY ELECTRICAL SYSTEM
Door Lock Control System
OK
NG
OK
NG
INSPECTION PROCEDURE
1
Check luggage compartment door opener main switch and opener switch.
C
OK
P
OK
C
Disconnect the luggage compartment door opener
main switch and opener switch connector.
Check luggage compartment door opener main switch.
Check continuity between terminals of main switch con-
nector.
Check luggage compartment door opener switch.
Check continuity between terminals of main switch and
opener switch connector.
Replace luggage compartment door opener main switch
and or opener switch.
2
Check harness and connector between ECU and main switch, opener switch and body ground
(See page
Repair or replace harness or connector.
Proceed t next circuit inspection shown on matrix
chart (See page
–
BODY ELECTRICAL SYSTEM
Door Lock Control System
BE–391
1
2
NG
OK
Proceed to next circuit inspection shown on
matrix chart (See page
Check door open detection switch.
Check harness and connectors between ECU and
door open detection switch, door open detection
switch and body ground (See page
Repair or replace harness or
connector.
NG
OK
Replace door open detection
switch.
WIRING DIAGRAM
Door Open Detection Switch Circuit
CIRCUIT DESCRIPTION
The door open detection switch is built in the door lock assembly. It is on when the door is open and
off when the door is closed.
DIAGNOSTIC CHART
BE–392
–
BODY ELECTRICAL SYSTEM
Door Lock Control System
OK
NG
OK
NG
INSPECTION PROCEDURE
1
Check door open detection switch
C
OK
P
1.
Remove the door trim and service hole cover.
2.
Disconnect door open detection switch connector.
Check continuity between terminals 3 and 6 of door
open detection switch connector, when the front door is
opened and closed.
Replace door open detection switch.
2
Check harness and connectors between ECU and door open detection switch, door open
detection switch and body ground (See page
).
Repair or replace harness or connector.
Proceed to next circuit inspection shown on
).
–
BODY ELECTRICAL SYSTEM
Door Lock Control System
BE–393
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