Lexus RX300 (MCU15). Service manual — part 123

BE1YG–01

I19235

2

1

4

500 –
800 Ω

–

BODY ELECTRICAL

HEADLIGHT BEAM LEVEL CONTROL SYSTEM

BE–39

LEXUS RX300 (RM785E)

INSPECTION

INSPECT HEADLIGHT BEAM LEVEL CONTROL SWITCH
(a)

Connect the positive (+) lead from the battery to terminal
1 and negative (–) lead to terminal 2.

(b)

Connect the positive (+) lead from the ammeter to battery
positive terminal and negative (–) lead to terminal 4.

(c)

Measure the ammpere terminal 4.

Switch position

Ammpere (A)

0

0.89

1

2.31

2

3.73

3

5.16

4

6.58

5

8.0

If current value is not as specified, replace the switch.

I19135

Front Fog Light

Combination Switch
D Fog Light Switch

Instrument Panel J/B
D FR FOG Fuse
D TAIL Fuse
D Taillight Control Relay
D Fog Light Relay

R/B No.1
D Rear Fog Light Relay

RHD:
Rear Fog Light

LHD:
Rear Fog Light

BE050–09

BE–40

–

BODY ELECTRICAL

FOG LIGHT SYSTEM

LEXUS RX300 (RM785E)

FOG LIGHT SYSTEM

LOCATION

BE1YH–01

I19120

11

Rr Fog

Fr Fog

10

16

N14863

1

2

3

5

5

2

1

3

–

BODY ELECTRICAL

FOG LIGHT SYSTEM

BE–41

LEXUS RX300 (RM785E)

INSPECTION

1.

INSPECT FOG LIGHT SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF

–

No continuity

Front fog

11 – 16

Continuity

Rear fog

10 – 16

Continuity

If continuity is not as specified, replace the switch.

2.

INSPECT FOG LIGHT RELAY CONTINUITY

Condition

Tester connection

Specified condition

Constant

1 – 2

Continuity

Apply B+ between

terminals 1 and 2.

3 – 5

Continuity

If continuity is not as specified, replace the relay.

3.

INSPECT FRONT AND REAR FOG LIGHT RELAY CIR-
CUIT

Remove the relay from the driver’s side relay block and inspect
the connector on relay block side.

Tester connection

Condition

Specified condition

3 – Ground

Constant

Continuity

1 – Ground

Light control switch HEAD

Battery voltage

5 – Ground

Constant

Battery voltage

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

BE052–09

I04498

A–bolt

BE–42

–

BODY ELECTRICAL

FOG LIGHT SYSTEM

LEXUS RX300 (RM785E)

ADJUSTMENT

ADJUST FRONT FOG LIGHT AIM
A–bolt: Vertical Direction