Lexus RX300 (MCU15). Service manual - part 159

BE0UQ–03

I07333

Antenna Cable

Auto Antenna

2.5 (25, 21.7 in.·lbf)

2.5 (25, 21.7 in.·lbf)

N·m (kgf·cm, ft·lbf) : Specified torque

–

BODY ELECTRICAL

ANTENNA

BE–183

LEXUS RX300   (RM785E)

COMPONENTS

BE0UR–03

I07343

I07344

Antenna Nut

BE–184

–

BODY ELECTRICAL

ANTENNA

LEXUS RX300   (RM785E)

REMOVAL

1.

REMOVE SIDE WINDOW INNER GARNISH
(See page BO–145)

2.

REMOVE 2 NUTS

3.

REMOVE ANTENNA NUT AND ORNAMENT

4.

DISCONNECT ANTENNA CODE AND WIRE HARNESS

BE0US–03

I07341

2

5

Up

6

4

3

I07342

2

5

Down

6

3

I08167

Wire Harness Side

–

BODY ELECTRICAL

ANTENNA

BE–185

LEXUS RX300   (RM785E)

INSPECTION

1.

INSPECT ANTENNA MOTOR

(a)

Connect the positive (+) lead from the battery to terminal
2, 3, 4 and 5 and the negative (–) lead to terminal 6.

(b)

Check that the motor turns (moves upward).

NOTICE:
These tests must be done quickly (within 3 – 5 seconds) to
prevent the coil from burning out.

(c)

Disconnect the positive (+) lead from the battery from the
terminal 4.

NOTICE:
These tests must be done quickly (within 3 – 5 seconds) to
prevent the coil from burning out.

2.

INSPECT ANTENNA MOTOR CONTROL RELAY CIR-
CUIT

Disconnect the connector from the relay and inspect the con-
nector on wire harness side, as shown in the chart below.

Tester connection

Condition

Specified  condition

6 – Ground

Constant

Continuity

2 – Ground

Ignition switch OFF

No voltage

2 – Ground

Ignition switch ACC or ON

Battery voltage

3 – Ground

Constant

Battery voltage

4 – Ground

Ignition switch ACC or ON,

and radio switch OFF

No voltage

4 – Ground

Ignition switch ACC or ON,

and radio switch ON

Battery voltage

5 – Ground

Ignition switch LOCK or ACC

No voltage

5 – Ground

Ignition switch ON

Battery voltage

BE0UT–03

BE4671

Antenna Nut

BE5781

BE5780

BE4674

Twist

BE–186

–

BODY ELECTRICAL

ANTENNA

LEXUS RX300   (RM785E)

REPLACEMENT

1.

Auto Antenna Models:
REMOVE ANTENNA ROD

HINT:
Do this operation with the battery negative (–) cable connected
to the battery terminal.
(a)

Turn the ignition switch to ”LOCK” position.

(b)

Remove the antenna nut.

(c)

Press the ”AM, FM” buttons on the radio receiver, and si-
multaneously turn the ignition switch to ”ACC” position.

HINT:

S

The rod will extend fully and be released form the motor
antenna.

S

After removing the antenna rod, leave the ignition switch
as ”ACC”.

NOTICE:
To prevent body damage when the antenna rod is released,
hold the rod while it comes out.
2.

Auto Antenna Models:
INSTALL ANTENNA ROD

(a)

Insert the cable of the rod until it reaches the bottom.

HINT:

S

When inserting the cable, the teeth on the cable must face
toward the rear of the vehicle.

S

Insert the antenna approx. 300 mm (11.8 in.).

(b)

Wind the cable to retract the rod by turning the ignition
switch to ”LOCK” position.

HINT:

S

If the ignition switch is already in ”LOCK” position, do step
1 (c) first, then turn the ignition switch to ”ACC” position.

S

In case the cable is not wound, twist it, as shown in the
illustration.

S

Even if the rod has not retracted fully, install the antenna
nut and inspect the antenna rod operation. It will finally re-
tract fully.

(c)

Inspect the antenna rod operation by pushing the radio
wave band select buttons.