brake LEXUS GS400 2000 Service Repair Manual

AT061±01
D01925
ACC
EP1KLS+
SLS+
Z16909
4 (+)
3 (±)
Z16910
4 (+)
3 (±)
AT±12
± AUTOMATIC TRANSMISSIONSHIFT LOCK SYSTEM
1960 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT SHIFT LOCK CONTROL ECU
Using a voltmeter, measure the voltage at each terminal.
HINT:
Do not disconnect the ECU connector.
TerminalMeasuring ConditionSpecified Condition
(1) IG SW ACC and shift lever P position0 V
1 ± 10 (KLS ± E)(2) IG SW ACC and shift lever except P position7.5 ± 11V (about I second)
after 6 ± 9 V
4 10 (ACC E)(1) IG SW ON10 ± 14 V4 ± 10 (ACC ± E)(2) IG SW ACC10 ± 14 V
7 10 (P1 E)(1) Shift lever P position0 V7 ± 10 (P1 ± E)(2) Shift lever except P position10 ± 14 V
(1) IG SW ON and shift lever P position0 V
8 10 (SLSE)(2) IG SW ON and depress brake pedal or shift lever N position3 ± 6 V8 ± 10 (SLS ± E)(3) IG SW ON and release brake pedal or shift lever except P position0 V
(4) IG SW ACC and shift lever except P position3 ± 6 V
10 ± Ground (E ± Ground)ConstantContinuity
2. INSPECT KEY INTERLOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals 3 and 4.
Standard resistance: 12 ± 17 W
If the resistance value is not as specified, replace the solenoid.
(c) Touch the solenoid with your finger and check that the so-
lenoid operation can be felt when battery voltage is ap-
plied intermittently to terminals 3 and 4.
If the operation is not as specified, replace the solenoid.

AT05W±01
D01264
O/D Brake (B0)
O/D One±way
Clutch (F
0) 3rd Coast Brake (B
1)
Direct Clutch (C
2)
Forward Clutch (C
1)
No.1 One±way Clutch (F
1)
2nd Brake (B
3)
1st & Reverse Brake (B
4)
No.2 One±way Clutch (F
2) 3rd Brake (B
2) O/D Direct Clutch (C
0)
Shift Solenoid Valve No.4Shift Solenoid Valve No.3Shift Solenoid Valve No.1 Shift Solenoid Valve No.2
Shift Solenoid Valve SLT
Shift Solenoid Valve SLU
Shift Solenoid Valve SLN
Park
Reverse
Neutral
1st
2nd
4th
5th
1st
4th
1st
3rd
1st
1stS1 S2 S3 C
0C1C2B0B1B2B3B4F0F1F2
: Operating
Gear
Position Shift Lever
Position
ONOFF
ON ON
ON ON
ON ON ON ON
ON
ON
OFF OFF OFF
OFF
OFF OFF
OFF
OFF
OFF OFF
OFFON
ON ON OFF OFF
ON
ONOFF OFF
ON OFF
OFF OFF OFF ON
OFF OFF
OFF ON 2nd
2nd
2nd3rd 3rd
S4
ON OFF ON
OFF ON ON
ON OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF R
N
D
4
3
2
L P
OFFON
OFF
OFFON
OFFOFF
OFF
AT±2
± AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION SYSTEM
1950 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
OPERATION

AT066±01
AT±26
± AUTOMATIC TRANSMISSIONFLOOR SHIFT ASSEMBLY
1974 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal.
(See page AT±16)
HINT:
After installation, inspect the shift lever position.

When shifting from P to R position only with ignition switch ON and brake pedal, make sure that the
shifting lever moves smoothly and can be moderately operated.

When starting engine, make sure that the vehicle moves forward when shifting from N to D position
and moves rearward when shifting to R position.

1.2 Sec.
0.8 Sec.
0.25 Sec. 0.5 Sec.0.25 Sec.
1 Sec. Blinks
Code 2±1 Code2±2
0.25 Sec.
0.25 Sec.0.5 Sec. 1 Sec.
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±239
2540 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
HINT:

When a key is not inserted in the key cylinder in the automatic registration mode, the security indicator
always lights on.

When the immobiliser system operates normally and the key is pulled out, the security indicator blinks.

When key code registration could not be performed in the automatic registration mode, code 2±1 is
output from the security indicator and when inserting the already registered key, code 2±2 is output.
(b) Automatic registration mode completion
If completing the mode forcibly when more than 1 key code have been registered in the automatic reg-
istration mode, perform the following procedures.
After 1 more key code have been registered with master key, perform step (1) or (2) without pulling
the key out or inserting the already registered key.
(1) Depress and release brake pedal 5 times or more within 15 sec.
(2) With the LEXUS hand±held tester, require automatic registration mode completion.

Will you register the
next key?
No Ye s
Insert already registered master key in the key
cylinder
Depress and release the acceleration pedal 5
times.
Depress and release the brake pedal 6 times,
and remove the master key.
Insert key to be registered in key cylinder.
Depress and release the acceleration pedal 1
time. (Security indicator blinks.)
The registration mode completes when pulling
out the key and depressing and releasing the
brake pedal once or more within 10 secs. after
indicator has been OFF or 10 sec. have passed. Within 10 sec.Within 15 sec.
Within 20 sec.
Within 10 sec.
Within 10 sec.
After 60 sec. additional master key is registered.
(Security indicator is OFF.)
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±241
2542 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) There are 2 ways for registration of additional master key, one way is depressing brake pedal and ac-
celeration pedal and the other way is using LEXUS hand±held tester.
HINT:

It is possible to register up to 7 master key codes including the already registered key code.

When any operation time described below is over, registration mode completes.

When the next procedure is performed while the timer is working, the timer completes counting time,
then next timer starts.

When replacing ºIgnition Cylinder Key Setº or ºLock Cylinder Setº register according to the following
procedure using the original master key. However, after the registration of the additional master key,
as the original master key and the original sub±key are not necessary any more, erase registered of
those key codes.
(1) Depressing brake pedal and acceleration pedal:

Will you register the
next key?
Insert already registered master key in the key cylinder.
Using LEXUS hand±held tester select master key regis-
tration.
Remove the master key.
Insert key to be registered in key cylinder.
(Security indicator blinks.)
After 60 sec., additional master key is registered.
(Security indicator OFF.)
No Ye s Within
10 sec.Within 120 sec.
Within 20 sec.
Within 10 sec.
The registration mode completes when pulling
out the key and depressing and releasing the
brake pedal once or more within 10 secs. after
indicator has been OFF or 10 sec. have passed.
BE±242
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
2543 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(2) Using LEXUS hand±held tester:

Will you register the
next key?
No Ye s
Insert already registered master key in the key
cylinder
Depress and release the acceleration pedal 4
times.
Depress and release the brake pedal 5 times,
and remove the master key.
Insert key to be registered in key cylinder.
Depress and release the acceleration pedal 1
time. (Security indicator blinks.)
Within 10 sec.Within 15 sec.
Within 20 sec.
Within 10 sec.
Within 10 sec.
After 60 sec. additional sub±key is registered.
(Security indicator is OFF.)
The registration mode completes when pulling
out the key and depressing and releasing the
brake pedal once or more within 10 secs. after
indicator has been OFF or 10 sec. have passed.
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±243
2544 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. REGISTRATION OF ADDITIONAL SUB±KEY
There are 2 ways for registration of additional sub±key, one way is depressing brake pedal and acceleration
pedal and the other way is using LEXUS hand±held tester.
HINT:

It is possible to register up to 3 sub±key codes including the already registered key code.

When any operation time described below is over, registration mode completes.

When the next procedure is performed while the timer is working, the timer completes counting time,
then next timer starts.
(1) Depressing brake pedal and acceleration pedal:

Will you register the
next key?
Insert already registered master key in the key cylinder.
Using LEXUS hand±held tester select sub±key registra-
tion.
Remove the master key.
Insert key to be registered in key cylinder.
(Security indicator blinks.)
After 60 sec., additional sub±key is registered.
(Security indicator OFF.)
No Ye s Within
10 sec.Within 120 sec.
Within 20 sec.
Within 10 sec.
The registration mode completes when pulling
out the key and depressing and releasing the
brake pedal once or more within 10 secs. after
indicator has been OFF or 10 sec. have passed.
BE±244
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
2545 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(2) Using LEXUS hand±held tester:

1. Insert master key in the key cylinder.
2. Depress and release the acceleration pedal 6 times.
3. Depress and release the brake pedal 7 times.
4. Remove the master key.
HINT:
If the key cannot be pulled out within 30 sec. from the first brake
depression in the step 3, the key code deletion is canceled.(Key code erased)
Within 15 sec.
Within 20 sec.
Within 10 sec.
END
5. Leave the vehicle more than 20 sec. without any
operation.
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±245
2546 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
4. ERASURE OF TRANSPONDER KEY CODE
There are 2 ways for erasure of transponder key code, one way is depressing brake pedal and acceleration
pedal and the other way is using LEXUS hand±held tester.
NOTICE:
Delete all other master and sub±key codes leaving the master key code to use the operation. When
using the key which was used before deletion, it is necessary to register the code again.
HINT:

When any operation time described below is over, registration mode completes.

When the next procedure is performed while the timer is working, the timer completes counting time,
then next timer starts.
(1) Depressing brake pedal and acceleration pedal:

± BODY ELECTRICALTROUBLESHOOTING
BE±5
2306 Author: Date:
2000 LEXUS GS300/GS400 (RM718U) ºHI±Beamº does not light (All).
1. Headlight Dimmer Switch
2. Daytime Running Light Main Relay
3. Wire HarnessBE±37
BE±37
±
ºHI±Beamº does not light (One side).
1. Bulb
2. H±LP L±UPR Fuse
3. H±LP R±UPR Fuse
4. Daytime Running Light No.3 Relay
5. Wire Harness±
BE±21
BE±21
BE±37
±
ºFlashº does not light.
1. Headlight Dimmer Switch
2. Daytime Running Light Main Relay
3. Wire HarnessBE±37
BE±37
±
Headlight does not come on.
1. Headlight Control Relay
2. Daytime Running Light Main Relay
3. Daytime Running Light No.2, 3, 4 Relay
4. Headlight Dimmer Switch
5. Light Control Switch
6. Wire Harness
7. *Light Control ECU
8. BulbBE±37
BE±37
BE±37
BE±37
BE±37
±
±
±
Headlight does not come on with light control switch in HEAD.
1. Light Control Switch
2. *Light Control ECU
3. Wire HarnessBE±37
±
±
Headlight does not go out with light control switch in OFF.
1. Headlight Control Relay
2. *Light Control ECU
3. Wire HarnessBE±37
±
±
Headlight flickers.
1. Bulb
2. *Light Control ECU
3. Wire Harness±
BE±37
±
Headlight is dark.
1. Bulb
2. *Light control ECU
3. Wire Harness±
±
±
Taillight does not come on with light control switch in TAIL.
1. Taillight Control Relay (Instrument Panel J/B)
2. Light Control Switch
3. Wire HarnessBE±37
±
±
Taillight does not go out with light control switch in OFF.
1. Taillight Control Relay
2. Light Control Switch
3. Wire HarnessBE±37
BE±37
±
Headlight does not come on with engine running and light control
switch in OFF.
1. ECU±B Fuse
2. GAUGE Fuse
3. Daytime Running Light Main Relay
4. Daytime Running Light No.2, 3, 4 Relay
5. Generator L Terminal
6. Parking Brake Switch
7. Wire HarnessBE±21
BE±21
BE±37
BE±37
DI±853
BE±92
±
*: HID Type