Lexus GS300/400 (2000 year). Manual — part 49

N13471

1

2

I04152

Wire Harness Side

–

BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

BE–159

2460

HINT:

When the temperature of the battery is low, the judge can
not be made correctly.
When the outcome of the test is less than 2.1 V, conduct
the test again after leaving the battery in the place at 18

°

C for more than 30 minutes.

By auto power off function, the voltage becomes no load
voltage (more than 2.5 V) condition 0.8 seconds after the
switch was pressed.
Make sure to read the voltage before of it.

High voltage might be shown 1 to 2 times after leaving the
battery, judge should be made with the voltage shown at
the 3rd time or later.

(g)

Disconnect the lead.

(h)

Set the battery (lithium battery) in the transmitter.

(i)

Install the cover, so that the O–ring is not distorted or
slipped off.

(j)

Using a screwdriver, tighten the screws.

3.

INSPECT WIRELESS DOOR LOCK BUZZER OPERA-
TION

Connect the positive (+) lead from the ohmmeter to terminal 1
and the negative (–) lead to terminal 2, and measure resistance
of approx. 1 k

Ω

.

If resistance is not as specified, replace the buzzer.
4.

INSPECT WIRELESS DOOR LOCK BUZZER CIRCUIT
(See page

DI–800

)

5.

INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
(See page

DI–788

)

Connector disconnected:

Disconnect the connector from the receiver and inspect the
connector on the wire harness side, as shown.

Tester connection

Condition

Specified condition

1 – Ground

Constant

Continuity

7 – Ground

Constant

Battery positive voltage

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

I04153

From Back Side

BE–160

–

BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

2461

6.

INSPECT WIRELESS DOOR LOCK CONTROL RE-
CEIVER CIRCUIT
Connector connected:

Connect the wire harness side connector to the receiver and in-
spect the wire harness side connector from the back side, as
shown.

Tester connection

Condition

Specified condition

3 – Ground

Ignition switch position OFF

Key removed

Transmitter OFF

→

ON

4.5 – 5.5 V

→

below 1 V

3 – Ground

Ignition switch position OFF

Key removed

Transmitter OFF

→

ON

4.5 – 5.5 V

→

below 1 V

4 – Ground

Ignition switch position OFF

Key removed

Transmitter ON

10 –14 V

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

BE0H5–06

I01348

Engine Room No.1
Junction Block

Engine Room No.2
Relay Block

Driver Side Junction Block

Engine Room No.3
Relay Block

Passenger Side Junction Block

BE–16

–

BODY ELECTRICAL

POWER SOURCE

2317

POWER SOURCE

LOCATION

The vehicle shown in this illustration is ”GS400”.

All components of ”GS300” other than the ones used for engine are same as ”GS400”.

I04026

Engine Room No.1 Junction Block

Fuses

Relays

1. MAIN H–Fuse
2. FL ABS NO.1 H–Fuse
3. ALT H–Fuse
4. ABS NO.2 H–Fuse
5. H–LP CLN H–Fuse
6. RAD NO.1 Fuse
7. ALT–S Fuse
8. EFI Fuse
9. TURN HAZ Fuse
10. TEL Fuse
11. AM2 Fuse

13. HORN Fuse

12. ETCS Fuse

14. MPX–B Fuse
15. ECU–B1 Fuse
16. HTR Fuse

B. Starter Relay

A. Headlight Control Relay

C. EFI Relay

17. FAN MAIN H–Fuse
18. CDS FAN H–Fuse

20. H–LP R LWR Fuse

19. RAD FAN H–Fuse

21. H–LP L LWR Fuse
22. H–LP R UPR Fuse
23. H–LP L UPR Fuse

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

18

17

19

20

21

22

23

A

B

C

–

BODY ELECTRICAL

POWER SOURCE

BE–17

2318