Lexus ES300 (1997 year). Service manual - part 177

BE056–01

N21592

1

3

5

N21593

1

2

5

7

N21594

  7       6

Z08889

OFF

ON

2

1

–

BODY ELECTRICAL

ILLUMINATION LIGHT SYSTEM

BE–43

1427

1997 LEXUS ES300   (RM511U)

INSPECTION

1.

Combination Meter Adjustment:
INSPECT RHEOSTAT LIGHT CONTROL VOLUME

(a)

Connect the positive (+) lead from the battery to terminal
5 and the negative (–) lead to terminal 1.

(b)

Connect the positive (+) lead from the voltmeter to termi-
nal 5 and negative (–) lead to terminal 3.

(c)

Turn the rheostat knob and check that the voltage
changes.

2.

Illumination Adjustment:
INSPECT RHEOSTAT LIGHT CONTROL VOLUME

(a)

Connect the positive (+) lead from the battery to terminal
5 and 7 and negative (–) lead to terminal 1.

(b)

Connect the positive (+) lead from the voltmeter to termi-
nal 7 and negative (–) lead to terminal 2.

(c)

Turn the rheostat knob and check that the voltage
changes.

3.

Tail Cancel:
INSPECT RHEOSTAT LIGHT CONTROL VOLUME

(a)

Connect the ohmmeter to terminals 6 and 7.

(b)

Turn the rheostat knob fully clockwise and check that cur-
rent flow stops.

If switch is not as specified, replace the volume.

4.

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.

BE5710

Wire Harness Side

1

2

BE–44

–

BODY ELECTRICAL

ILLUMINATION LIGHT SYSTEM

1428

1997 LEXUS ES300   (RM511U)

5.

INSPECT GLOVE BOX LIGHT SWITCH CIRCUIT

Disconnect the connector fromt the switch and inspect the con-
nector on the wire harness side.

Tester connection

Condition

Specified condition

2 – Ground

Constant

Continuity

1 – Ground

Light control switch position OFF

No voltage

1 – Ground

Light control switch position TAIL or HEAD

Battery positive voltage

If the circuit is not as specified, inspect the circuits connected
to other parts.

Z19395

E/G Room Junction Block

 DOME Fuse

Door Courtesy Switch

Instrument Panel
Junction Block

 Integration Relay

Personal Light

Vanity Light

Vanity Light

Door Courtesy Switch

Courtesy Light

Courtesy Light

Luggage Compartment
Light

Luggage Compartment
Door Courtesy Switch
and Opener Motor

BE057–01

–

BODY ELECTRICAL

INTERIOR LIGHT SYSTEM

BE–45

1429

1997 LEXUS ES300   (RM511U)

INTERIOR LIGHT SYSTEM

LOCATION

BE058–03

N21585

2              1

N21586

Wire Harness Side

1

2

Z05874

1

2

Z05672

Wire Harness Side

1

2

GA–2–1–B

BE–46

–

BODY ELECTRICAL

INTERIOR LIGHT SYSTEM

1430

1997 LEXUS ES300   (RM511U)

INSPECTION

1.

INSPECT PERSONAL LIGHT SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF

–

No continuity

ON

1 – 2

Continuity

If continuity is not as specified, replace the light assembly or
bulb.

2.

INSPECT PERSONAL 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

Continuity

1 – Ground

Constant

Battery positive voltage

If the circuit is as specified, inspect power source or wire har-
ness.

3.

INSPECT INTERIOR LIGHT SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

DOOR

2 – Switch body

Continuity

OFF

–

No continuity

ON

1 – 2

Continuity

If continuity is not as specified, replace the light assembly or
bulb.

4.

INSPECT INTERIOR LIGHT SWITCH CIRCUIT

Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.