Lexus LS400 (2000 year). Manual — part 51
BE0BA–01
I03228
Driver Door ECU
Body ECU
Instrument Panel Junction Block
GAUGE Fuse
RADIO No.2 Fuse
Ignition Switch and Key Unlock
Warning Switch
Door Lock Assembly
Door Courtesy Switch
Door Lock Assembly
Door Courtesy Switch
BE–32
–
BODY ELECTRICAL
IGNITION SWITCH AND KEY UNLOCK WARNING
SWITCH
1895
IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH
LOCATION
BE0BB–01
N11771
1
2
3
4
8 7 6 5
N11771
1
2
3
4
8
7 6 5
Z14750
OFF
ON
–
BODY ELECTRICAL
IGNITION SWITCH AND KEY UNLOCK WARNING
SWITCH
BE–33
1896
INSPECTION
1.
INSPECT IGNITION SWITCH CONTINUITY
Switch position
Tester connection
Specified condition
LOCK
–
No continuity
ACC
2 – 3
Continuity
ON
2 – 3 – 4
6 – 7
Continuity
START
1 – 2 – 4
6 – 7 – 8
Continuity
If continuity is not as specified, replace the switch.
2.
INSPECT IGNITION SWITCH CIRCUIT
Connect the switch connector and inspect the connector on the
wire harness side from the back side, as shown.
If circuit is not as specified, inspect the switch and circuits con-
nected to other parts.
Tester connection
Condition
Specified condition
1– Ground
Ignition switch turned to START
Battery positive voltage
2 – Ground
Constant
Battery positive voltage
3 – Ground
Ignition switch turned to ACC or ON
Battery positive voltage
4 – Ground
Ignition switch turned to ON
Battery positive voltage
6 – Ground
Ignition switch turned to ON
Battery positive voltage
7 – Ground
Constant
Battery positive voltage
8– Ground
Ignition switch turned to START
Battery positive voltage
3.
INSPECT KEY UNLOCK WARNING SWITCH CONTI-
NUITY
Switch position
Tester connection
Specified condition
OFF
(Ignition key removed)
–
No continuity
ON
(Ignition key set)
1 – 2
Continuity
If continuity is not as specified, replace the switch.
Z14751
BE–34
–
BODY ELECTRICAL
IGNITION SWITCH AND KEY UNLOCK WARNING
SWITCH
1897
4.
INSPECT KEY UNLOCK WARNING SWITCH CIRCUIT
Connect the switch connector and inspect the connector on the
wire harness side from the back side, as shown.
Tester connection
Condition
Specified condition
2 – Ground
Ignition key removed
No continuity
2 – Ground
Ignition key set
Continuity
1 – Ground
Constant
Continuity
If circuit is not as specified, inspect the switch or wire harness.
BE0BC–03
I09285
Engine Room Junction Block
H–LP R LWR Fuse
H–LP L LWR Fuse
H–LP R UPR Fuse
H–LP L UPR Fuse
DRL Fuse
ECU–B Fuse
H–LP Relay
DIM Relay (USA)
Daytime Running Light No.2 Relay
Daytime Running Light
No.3 and No.4 Relay
Automatic Light
Control Sensor
Body ECU
Daytime Running Light
Main Relay
Driver Door ECU
Door Lock Assembly
Door Courtesy Switch
Rear Light Assembly
Rear Combination
Light
Combination Switch
Light Control Switch
Dimmer Switch
Instrument Panel Junction Block
TAIL Fuse
GAUGE Fuse
TAIL Relay
Headlight
–
BODY ELECTRICAL
HEADLIGHT AND TAILLIGHT SYSTEM
BE–35
1898
HEADLIGHT AND TAILLIGHT SYSTEM
LOCATION
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