Lexus ES300 (1997 year). Manual — part 111
Z19396
Stop Light Switch
Instrument Panel Junction Block
STOP Fuse
High–Mounted Stop Light
Light Failure Sensor
Stop Light
BE059–01
BE–50
–
BODY ELECTRICAL
STOP LIGHT SYSTEM
1434
1997 LEXUS ES300 (RM511U)
STOP LIGHT SYSTEM
LOCATION
BE05A–01
Z06565
1
2
3
4
4
2
1
3
Z06566
Wire Harness Side
1
2
3
4
eg–4–1
N21597
1
2
–
BODY ELECTRICAL
STOP LIGHT SYSTEM
BE–51
1435
1997 LEXUS ES300 (RM511U)
INSPECTION
1.
INSPECT STOP LIGHT SWITCH CONTINUITY
Switch position
Tester connection
Specified condition
Switch pin free
1 – 2
Continuity
Switch pin pushed in
3 – 4
Continuity
If continuity is not as specified, replace the switch.
2.
INSPECT STOP LIGHT SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.
Tester connection
Condition
Specified condition
2 – Ground
Constant
Battery positive voltage
If circuit is not as specified, inspect the power source or wire
harness.
3.
INSPECT HIGH–MOUNTED STOP LIGHT ASSEMBLY
CONTINUITY
Using the ohmmeter, check that continuity exists between ter-
minals.
If continuity is not as specified, replace the bulb or light assem-
bly.
N21598
Wire Harness Side
1
2
e–2–1–J
N20209
Wire Harness Side
1
2
3
4
5
6
7
8
9
10
11
12
e–12–2–B
BE–52
–
BODY ELECTRICAL
STOP LIGHT SYSTEM
1436
1997 LEXUS ES300 (RM511U)
4.
INSPECT HIGH–MOUNTED STOP LIGHT ASSEMBLY
CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.
Tester connection
Condition
Specified condition
1 – Ground
Constant
Battery positive voltage
If circuit is not as specified, inspect the power source or wire
harness.
5.
INSPECT LIGHT FAILURE SENSOR CIRCUIT
Disconnect the connector from the sensor and inspect the con-
nector on the wire harness side.
Tester connection
Condition
Specified condition
1 – Ground
Constant
Continuity*
2 – Ground
Constant
Continuity*
9 – Ground
Constant
Continuity*
11 – Ground
Constant
Continuity
3 – Ground
Light control switch OFF
No voltage
3 – Ground
Light control switch TAIL or HEAD
Battery positive voltage
4 – Ground
Ignition switch LOCK or ACC
No voltage
4 – Ground
Ignition switch ON
Battery positive voltage
7 – Ground
Stop light switch OFF
No voltage
7 – Ground
Stop light switch ON
Battery positive voltage
8 – Ground
Ignition switch LOCK or ACC
No voltage
8 – Ground
Ignition switch ON
Battery positive voltage
*: There is resistance because this circuit is grounded through
the bulb.
If the circuit is as specified, replace the sensor.
If the circuit is not as specified, inspect the circuits connected
to other parts.
Z19354
Wiper Motor
Washer Motor
Combination Switch
Wiper and Washer
Switch
Ignition Switch
Instrument Panel Junction Block
WIPER Fuse
BE05B–01
–
BODY ELECTRICAL
WIPER AND WASHER SYSTEM
BE–53
1437
1997 LEXUS ES300 (RM511U)
WIPER AND WASHER SYSTEM
LOCATION
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