Lexus LS400 (2000 year). Manual — part 60
Z08889
OFF
ON
2
1
BE0BQ–01
BE5710
Wire Harness Side
1
2
BE–68
–
BODY ELECTRICAL
ILLUMINATION LIGHT SYSTEM
1931
INSPECTION
1.
INSPECT GLOVE BOX LIGHT SWITCH CONTINUITY
Switch position
Tester connection
Specified condition
OFF (Closed)
–
No Continuity
ON (Opened)
1 – 2
Continuity
If continuity is not as specified, replace the relay.
2.
INSPECT GLOVE BOX LIGHT SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side, as shown.
Tester connection
Condition
Specified condition
1 – Ground
Light control switch position OFF
No voltage
1 – Ground
Light control switch position TAIL or HEAD
Battery positive voltage
2 – Ground
Constant
Continuity
If the circuit is not as specified, inspect the circuits connected
to other parts.
BE0BR–01
I03264
Engine Room Junction Block
DOME Fuse
Body ECU
Ignition Switch
Key Unlock Warning Switch
Instrument Panel Junction Block
RAD No.2 Fuse
GAUGE Fuse
Door Lock Assembly
Door Courtesy Switch
Door Unlock Detection Switch
Stop Light
Rear Personal Light Assembly
Rear Room Light
Rear Room Light Switch
Rear Door Courtesy Light
Front Personal
Light
Front Passenger Door ECU
Vanity Light
Driver Door ECU
Luggage Compartment
Light
Courtesy Switch
(Luggage Compartment Door)
–
BODY ELECTRICAL
INTERIOR LIGHT SYSTEM
BE–69
1932
INTERIOR LIGHT SYSTEM
LOCATION
BE5671
Continuity
No continuity
ON
BE0BS–01
N13306
(c) Close
(b) Open
I03245
BE–70
–
BODY ELECTRICAL
INTERIOR LIGHT SYSTEM
1933
INSPECTION
1.
INSPECT DOOR OUTSIDE HANDLE SWITCH CONTI-
NUITY
(a)
Check that there is continuity between terminals 1 and 2
when door outside handle is pulled.
(b)
Check that there is no continuity between terminals 1 and
2 when door outside handle is released.
If operation is not as specified, replace the switch.
2.
INSPECT COURTESY SWITCH CONTINUITY
(a)
Connect the connector to the driver door ECU.
(b)
Check that there is continuity between terminals 3 and 6
when door is opened.
(c)
Check that there is no continuity between terminals 3 and
6 when door is closed.
If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.
3.
Driver’s door:
INSPECT COURTESY SWITCH CIRCUIT
(See page
4.
Passenger ’s door:
INSPECT COURTESY SWITCH CIRCUIT
(See page
5.
Rear left door:
INSPECT COURTESY SWITCH CIRCUIT
(See page
6.
Rear right door:
INSPECT COURTESY SWITCH CIRCUIT
(See page
7.
INSPECT FRONT PERSONAL LIGHT SWITCH CONTI-
NUITY
Switch position
Tester connection
Specified condition
Interior Light Switch
OFF (Lever Switch)
–
No continuity
Interior Light Switch
DOOR (Lever Switch)
1 – 3
Continuity
Interior Light Switch
ON (Lever Switch)
1 – 2
Continuity
Personal Light OFF
(Push Switch)
–
No continuity
* Personal Light ON
(Push Switch)
1 – 2
Continuity
* Set to the interior light switch to OFF or DOOR
If continuity is not as specified, replace the light assembly or
bulb.
I03432
Wire Harness Side
Z14891
Rear Room Light
ON
Z14892
Rear Door Courtesy Light
–
BODY ELECTRICAL
INTERIOR LIGHT SYSTEM
BE–71
1934
8.
INSPECT FRONT PERSONAL LIGHT SWITCH CIR-
CUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side, as shown.
If circuit is not as specified, inspect the power source or wire
harness.
Tester connection
Condition
Specified condition
2 – Ground
Constant
Continuity
5 – Ground
Constant
Continuity
1 – Ground
Constant
Battery positive voltage
4 – Ground
Constant
Battery positive voltage
9.
INSPECT REAR PERSONAL LIGHT ASSEMBLY CON-
TINUITY
Rear room light:
Switch position
Tester connection
Specified condition
Room light switch off
and door close
–
No continuity
Room light switch on
and door close
1 – 2
Continuity
Room light switch off
or ON and door open
1 – 3
Continuity
If continuity is not as specified, replace bulb or rear personal
light assembly.
10.
INSPECT REAR PERSONAL LIGHT ASSEMBLY CON-
TINUITY
Rear door courtesy light:
Using the ohmmeter, check that there is continuity between ter-
minals.
If continuity is not as specified, replace the bulb or rear personal
light assembly.
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