battery LEXUS GS400 2000 Service Manual PDF

I03487
GARAGE DOOR
OPENER SWITCH
LEARN MODE
LED
OPERATION
ORIGINAL
TRANSMITTERPRESSED
ENTER
EXIT
ON
OFF20 sec
LED flashes
at a rate of 1 Hz
LED flashes at a
rate of 5.6 Hz PRESSED
ON
OFF
± BODY ELECTRICALGARAGE DOOR OPENER SYSTEM
BE±231
2532 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
New code registration timing chart.
If a code can not be registered, observe the following condi-
tions.
HINT:

If the battery of original transmitter is consumed.

Press the switch of the transmitter repeatedly in registra-
tion mode, as some transmitters stop transmitting for 1 to
2 seconds.

This system is not applicable to the garage door opener
which had been made before 1982.
2. CODE DELETION
(a) Press the switches at both ends of garage door opener
simultaneously for 20 seconds.
HINT:
When transferring to deletion mode, LED (red) blinks in 6 Hz
cycle.
(b) When releasing the switch within 10 seconds after trans-
ferring to deletion mode, all the registered codes will be
erased.
HINT:
Press the switch until blinking in 6 Hz cycle stops, so that the
default code for check is set.

I04194
Wire Harness Side BE±236
± BODY ELECTRICALGARAGE DOOR OPENER SYSTEM
2537 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. INSPECT GARAGE DOOR OPENER SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
1 ± GroundConstantContinuity
2 ± GroundConstantBattery positive voltage
If the circuit is not as specified, inspect the power source or wire
harness.

I04311
I04312
BE±240
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
2541 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
2. KEY REGISTRATION PROCEDURE WHEN KEY OR KEY CYLINDER HAS BEEN REPLACED.
HINT:
Key registration procedure of new master key and new sub±key on this vehicle when new ignition cylinder
and key set, and new lock cylinder set including ignition key cylinder are installed is described below.
(a) Removing wire±less and immobiliser module from origi-
nal master key.
(b) Making new master key.
After replacing and installing new ignition cylinder, install
the removed original modules into new 2 key housings as
supply parts.
(c) Registration of supplied new sub±key and /or master key
Register supplied new sub±key and /or master key by us-
ing new master key.
(See step 3 and 4)
NOTICE:
In case of replacing ignition cylinder and key set, door
locks cannot be opened with new ignition keys. Therefore,
to avoid any trouble caused by empty battery of transmitter
of new ignition key, please bring the original key while driv-
ing.

BE0FZ±08
I04195
I04196
6
I04197
BE±250
± BODY ELECTRICALHORN SYSTEM
2551 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT HORN SWITCH
(a) Disconnect the negative (±) terminal from the battery.
(b) Remove the left and right covers from the steering wheel.
(c) Using a torx socket wrench, loosen the 2 bolts.
(d) Pull up the horn pad and place it on the steering column,
as shown.
HINT:
Do not disconnect the connector from the horn pad.
(e) Disconnect the connector from the slip ring.
(f) Check that no continuity exists between terminal 6 of the
connector and body ground.
(g) Check that continuity exists between terminal 6 of the
connector and body ground when the horn contact plate
is pressed against the steering spoke assembly.
If continuity is not as specified, repair or replace the steering
wheel or wire harness as necessary.
(h) Install the horn pad in place and using a torx socket
wrench, torque the 2 bolts.
Torque:
7.1 N´m (72 kgf´cm, 62 in.´lbf)
(i) Install the left and right covers.
(j) Connect the negative (±) terminal to the battery.
2. INSPECT HORN OPERATION
Connect the positive (+) lead from the battery to the terminal
and negative (±) lead to the horn body and check that the horn
blows.
If operation is not as specified, replace the horn.
3. INSPECT HORN SWITCH CIRCUIT
(See page DI±806)

BE0H4±04
I01256
1 2 3 4
5 6 7 8 LOCKACC
ON
START
I04031
From Back Side
± BODY ELECTRICALIGNITION SWITCH AND KEY UNLOCK WARNING
SWITCHBE±31
2332 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT IGNITION SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
LOCK±No continuity
ACC2 ± 3Continuity
ON2 ± 3 ± 4
6 ± 7Continuity
START1 ± 2 ± 4
6 ± 7 ± 8Continuity
If continuity is not as specified, replace the switch.
2. INSPECT IGNITION SWITCH CIRCUIT
Connect the switch connector and inspect the connector on
wire harness side from the back side, as shown.
Tester connectionConditionSpecified condition
2 ± GroundConstantBattery positive voltage
3 ± GroundIgnition switch ACC or ONBattery positive voltage
4 ± GroundIgnition switch ONBattery positive voltage
6 ± GroundIgnition switch ON or STARTBattery positive voltage
7 ± GroundConstantBattery positive voltage
8 ± GroundIgnition switch STARTBattery positive voltage
If circuit is not as specified, inspect the circuits connected to oth-
er parts.

I04265
I01663
1 2 OFF
ON
3 4
I04032
Wire Harness Side BE±32
± BODY ELECTRICALIGNITION SWITCH AND KEY UNLOCK WARNING
SWITCH
2333 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. INSPECT IGNITION KEY ILLUMINATION OPERATION
Connect the positive (+) lead from the battery to terminal 1 and
the negative (±) lead to terminal 2, and check that the indicator
light lights up.
If operation is not as specified, replace the switch.
4. INSPECT IGNITION KEY ILLUMINATION CIRCUIT
(See page DI±843)
5. INSPECT KEY UNLOCK WARNING SWITCH CONTI-
NUITY
Switch positionTester connectionSpecified condition
OFF (Key removed)±No continuity
ON (Key set)1 ± 2Continuity
If continuity is not as specified, replace the switch.
6. INSPECT KEY UNLOCK WARNING SWITCH CIRCUIT
(See page DI±828)
Connect the switch connector and inspect the connector on
wire harness side from the back side, as shown.
Tester connectionConditionSpecified condition
1 ± GroundConstantContinuity
If circuit is not as specified, inspect the circuits connected to oth-
er parts.

I04034
Wire Harness Side
16
I04034
Wire Harness Side
179
I04035
From Back Side
14 13 15
BE±38
± BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
2339 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
4. INSPECT LIGHT CONTROL SWITCH CIRCUIT
Connector disconnected:
(See page DI±832)
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
16 ± GroundConstantContinuity
If circuit is not as specified, inspect the wire harness.
5. INSPECT HEADLIGHT DIMMER SWITCH CIRCUIT
Connector disconnected:
(See page DI±832)
Disconnect the connector from the switch and inspect the con-
nector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
17 ± GroundConstantContinuity
9 ± GroundLight control switch HEADBattery positive voltage
If circuit is not as specified, inspect the wire harness.
6. INSPECT LIGHT CONTROL SWITCH CIRCUIT
Connector connected:
Connect the wire harness side connector to the light control and
dimmer switch and inspect the connector from the back side, as
shown.

I04035
From Back Side
8 18
± BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE±39
2340 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)Tester connection
ConditionSpecified condition
13 ± GroundLight control switch OFF, TAIL or HEADNo voltage
13 ± GroundLight control switch AUTOBattery positive voltage
14 ± GroundLight control switch OFF or TAILNo voltage
14 ± GroundLight control switch HEADBattery positive voltage
15 ± GroundLight control switch OFFNo voltage
15 ± GroundLight control switch TAIL or HEADBattery positive voltage
If circuit is not as specified, inspect the wire harness.
7. INSPECT HEADLIGHT DIMMER SWITCH CIRCUIT
Connector connected:
Connect the wire harness side connector to the light control and
dimmer switch and inspect the connector from the back side, as
shown.
Tester connectionConditionSpecified condition
8 ± Ground
Headlight dimmer switch FLASH
Light control switch HEAD and dimmer switch
HIGH
No voltage
8 ± GroundLight control switch HEAD and
dimmer switch LOWBattery positive voltage
18 ± GroundLight control switch HEAD and
dimmer switch LOW and fog light switch ONNo voltage
18 ± Ground
Light control switch HEAD and
dimmer switch HIGH or FLASH and fog light
switch ON
Battery positive voltage
If circuit is not as specified, inspect the wire harness.

I04036
1 2
3 41 2 3
4 5 6 Connector ºBº Connector ºAº
A2 B3 B1
A3
A5 A1 B4 B2
I01259
21
3 4
2
41
3
BE±40
± BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
2341 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
8. INSPECT DAYTIME RUNNING LIGHT NO.3 AND NO.4
RELAY CONTINUITY
Tester connectionConditionSpecified condition
A1 ± B3ConstantContinuity
A3 ± A5ConstantContinuity
B3 ± B4ConstantContinuity
A2 ± A5Apply battery positive voltage between
terminals A1 and B3.Continuity
B1 ± B2Apply battery positive voltage between
terminals B3 and B4.Continuity
If continuity is not as specified, replace the relay.
9. INSPECT HEADLIGHT CONTROL RELAY CONTINU-
ITY
ConditionTester connectionSpecified condition
Constant1 ± 2Continuity
Apply B+ between
terminals 1 and 2.3 ± 4Continuity
If continuity is not as specified, replace the relay.
10. INSPECT HEADLIGHT CONTROL RELAY CIRCUIT
(See page DI±847 and BE±21)

I04038
I04039
BE±42
± BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
2343 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)8 ± Ground
Headlight dimmer switch HIGH beam or FLASHContinuity
1 ± GroundIgnition switch LOCK or ACCNo voltage
1 ± GroundIgnition switch ON or STARTBattery positive voltage
5 ± GroundEngine StopNo voltage
5 ± GroundEngine RunningBattery positive voltage
7 ± GroundConstantBattery positive voltage
9 ± GroundConstantBattery positive voltage
If circuit is specified, try replacing the relay with a new one.
If circuit is not as specified, inspect the circuits connected to oth-
er parts.
16. INSPECT AUTOMATIC LIGHT CONTROL
AUTO ON:
(a) Turn the ignition switch ON.
(b) Turn the light control switch to AUTO.
(c) Gradually cover the top of the sensor.
(d) Check the accessory lights and the headlights should turn
ON.
17. INSPECT AUTOMATIC LIGHT CONTROL
AUTO OFF:
(a) Gradually expose the sensor.
(b) Check the headlights and the accessory lights should turn
OFF.
18. INSPECT LIGHT±OFF CONDITION
(a) Turn the ignition switch ON.
(b) Gradually cover the top of the sensor.
Lights auto ON:
(c) Check that the lights go off under the following conditions.
(1) Light control switch is OFF.
(2) The area surrounding the sensor gets bright.
(3) The driver's door is opened with the ignition switch
OFF.