key LEXUS GS400 2000 Service Repair Manual

AT060±01
D01091
Shift Lock Control ECU Shift Lock Override ButtonKey Interlock Solenoid
Stop Light Switch
± AUTOMATIC TRANSMISSIONSHIFT LOCK SYSTEM
AT±11
1959 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
SHIFT LOCK SYSTEM
LOCATION

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.

BE±114
± BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2415 Author: Date:
2000 LEXUS GS300/GS400 (RM718U) Only AUTO DOWN operation does not
operate.
(All window (Except driver side) doors.)
Master switch ON SC3 terminal does not output.
Driver door control ECU SC3 terminal does not
input.

Master switch SC3 terminal (13)

Driver door control ECU SC3 terminal (B11)

Check wire harness between terminal SC3 (13)
and SC3 (B11)

Driver door control ECU

Master switch
Only AUTO DOWN operation does not
operate.
(Only specific window does not operate.)Master switch faulty

Check continuity of master switch.
3. THE KEY RELATED POWER WINDOW OPERATION DOES NOT OPERATE WITH DRIVER SIDE
DOOR KEY CYLINDER. (MASTER SWITCH OPERATION IS NORMAL.)
TroubleSuspect Area (terminal No.)Parts name
Door lock system does not operate with
door key.Refer to ºPOWER DOOR LOCK CONTROL
SYSTEMº.±
Door lock system does not operate with
door key.
Fail±safe mode caused by error on jam protec-
tion sensor of power window.
(Operation of power window with multi±function
transmitter is prohibited.)
HINT: DTC 31 ± 38 output
Refer to ºMultiplex Communication Systemº.
4. POWER WINDOW DOES NOT OPERATE WITH MULTI±FUNCTION TRANSMITTER. (WINDOWS
OPERATE NORMALLY WITH MASTER SWITCH.)
TroubleSuspect Area (terminal No.)Parts name
Door lock and luggage compartment
opener do not operate with multi±function
transmitter.Refer to ºWIRELESS DOOR LOCK CONTROL
SYSTEMº.±
Only luggage compartment opener oper-
ates with multi±function transmitter.Wireless door lock transmitter faulty.Check wireless door lock transmitter.
Door lock and luggage compartment
opener operate with multi±function trans-
mitter.
Fail±safe mode caused by error on jam protec-
tion sensor of power window.
(Operation of power window with multi±function
transmitter is prohibited.)
HINT: DTC 31 ± 38 output
Refer to ºMultiplex Communication Systemº.
5. WINDOW MOVES DOWN WITHOUT BEING ORDERED DURING THE UP OPERATION
TroubleSuspect Area (terminal No.)Parts name
After the window is fully closed, it starts to
move down.
Power window motor limit switch wire harness
faulty.

Power window motor reset switch is reset.

Driver door control ECU LMT terminal (B12)

Driver door control ECU
The window moves down during the up
operation.FLOW CHART <B>±

BE0HQ±11
I01364
Power Window Master Switch
Door Lock Manual SwitchIgnition Switch
Door Lock Assembly
 Door Lock Motor
 Door Unlock Detection
Switch
 Door Key Lock and
Unlock Switch
Door Lock Assembly
 Door Lock Motor
 Door Unlock Detection Switch
 Door Key Lock and Unlock Switch
Passenger Door Lock
Control Switch
BE±130
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2431 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
POWER DOOR LOCK CONTROL SYSTEM
LOCATION

I05185UNLOCK LOCK3 5 6 Front left side:
I05183
1 2 4
LOCK
UNLOCK Front right side
I04136
3 4 UNLOCK<Example Front left side> BE±132
± BODY ELECTRICALPOWER DOOR LOCK CONTROL SYSTEM
2433 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. Front left side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
LOCK3 ± 5Continuity
OFF±No continuity
UNLOCK3 ± 6Continuity
If continuity is not as specified, replace the switch.
7. Front left side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT
(See page DI±872)
8. Front right side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
LOCK2 ± 4Continuity
OFF±No continuity
UNLOCK1 ± 4Continuity
If continuity is not as specified, replace the switch.
9. Front right side door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT
(See page DI±904)
10. Front door:
INSPECT DOOR UNLOCK DETECTION SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
OFF (Door Lock set to
LOCK)±No continuity
ON (Door Lock set to
UNLOCK)3 ± 4Continuity
If continuity is not as specified, replace the switch.

BE0GQ±03
I01365
Luggage Compartment
Courtesy SwitchIgnition Switch
Door Lock Assembly

Door Lock Motor

Door Unlock Detection
Switch

Door Key Lock and
Unlock Switch
Door Lock Assembly

Door Lock Motor

Door Unlock Detection
Switch

Door Key Lock and Unlock SwitchLuggage Compartment
Opener Switch
Luggage Compartment
Key Lock and Unlock
Switch
Horn Theft Deterrent HornEngine Room No.1 Junction Block

HORN Fuse

Headlight Control Relay

Starter Relay
Engine Hood Courtesy Switch
Driver Side Junction Block

ST Fuse

Taillight Control RelayEngine Room No.2 Relay Block

Horn Relay
BE±140
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
2441 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
THEFT DETERRENT SYSTEM
LOCATION
The vehicle shown in this illustration is ºGS400º.
All components of ºGS300º other than the ones used for engine are same as ºGS400º.

DI3CO±10
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±141
2442 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
PRE±CHECK
1. THEFT DETERRENT SYSTEM
When the system is set to the theft deterrent mode and any of
the following conditions are met, the system sounds the horns
and flashes the headlights and the taillights for approx. 1 min-
ute.
At the same time the system locks all doors (If all door are not
locked at once, the system repeats door locking operation ev-
ery 0.55 seconds during the one minute alarm time).
There are 2 modes in this system, which are active mode and
passive mode.
All initial setting are performed in active mode. It can be
switched to passive mode by specified operation. (See step 4.
CHANGING METHOD OF PASSIVE MODE)
Condition:
Any of the doors (Including the engine hood and luggage
compartment door) is unlocked or opened without the
key. *1
The battery terminal is disconnected and reconnected.
The system receives panic signal from remote keyless
entry. *2
*1: Only active arming mode.
*2: When the ignition key is not inserted in the key cylin-
der.
There are 4 conditions in this system which are disarming
condition, disarming preparation condition, arming condition
and alarming condition.
(a) Disarming condition:
(1) When a user is near the vehicle.
(2) When the alarming function does not operate.
(3) When theft deterrent function is not performed.
(b) Disarming preparation condition:
(1) Time from a user locks a door to be leaves the ve-
hicle.
(2) Time until transferring to disarming condition.
(3) Theft deterrent function is not performed.
(c) Arming condition:
(1) When a user leaves the vehicle completely.
(2) When theft deterrent function is possible.

BE±142
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
2443 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(d) Alarming condition:
Is this condition, once theft is detected, it is informed us-
ing light and sound to people around the vehicle.
Refer to the table for alarming method or time.
Horn
Al i th dSecurity hornAlarming methodHeadlight
Taillight
Alarming time60 seconds
Alarming outputContinuous 0.25 secs. (ON)
0.25 secs. (OFF)
In the arming condition when either of doors is unlocked and
with not key in the key cylinder, force lock signal is output.

Disarming condition
Any of the following conditions is met

When all doors and engine hood are closed, lock all the doors using a key.

When all doors and engine hood are closed, lock all the doors using wireless remote function.

When all doors and engine hood are closed, open and close either of doors and engine hood
then close and lock all doors and engine hood.
Disarming preparation condition
Any of the following conditions is met

30 seconds elapse when the engine hood
is closed and all doors are locked.
Any of the following conditions is met

Close and open either of all doors and
engine hood.

Lock and unlock either of doors.

Insert a key into the ignition key cylinder.

Reconnect the battery.
Arming condition
Any of the following conditions is met

Unlock the locked doors using the wireless
remote function.

Unlock the locked doors using the key.

Insert the key into the ignition key cylinder
and turn the ignition key ON.
Any of the following conditions is met

Either of closed doors opens.

Either of locked doors is unlocked by any
operation other than key or wireless remote
function.

The closed engine hood is opened.

The battery is reconnected.
Alarming condition
Any of the following conditions is met

Unlock the locked doors using the wireless
remote function.

Unlock the locked doors using the key.

Insert the key into the ignition key cylinder
and turn the ignition key ON.
In this mode, once theft is detected, it is
informed using light and sound to people
around the vehicle.
The alarming time described above passes.
(Key not inserted in ignition cylinder.)
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±143
2444 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
2. ACTIVE ARMING MODE

Disarming condition (A)
Disarming preparation condition
Any of the following
conditions is met

With all doors and
engine hood closed
30 seconds elapse.
Arming condition
Any of the following conditions is met
(Refer to HINT * on the next page)

Press unlock switch of the wireless.

Insert the key into the driver and passenger
doors key cylinders, turn the key to unlock.

Insert the key into the ignition key cylinder
and turn the key to ON.
Any of the following conditions is met

Either of closed door is opened and entry
delay time elapses. (Refer to HINT on the
next page)

Engine hood is closed and opened.

Battery is reconnected.
Alarming condition
In this mode, once theft is detected, it is
informed using light and sound to people
around the vehicle.
The alarming time described above passes.
Any of the following conditions is met

Pull the key out of the ignition key cylinder which the key was inserted in.
Disarming condition (B)
Any of the following conditions is met

Press the unlock button of wireless.

Insert the key into the key cylinder of driver
or passenger seat and turn the key to unlock.

Insert the key into the ignition key cylinder.

Reconnect the battery.
Any of the following conditions is met

Open and close either of all doors and
engine hood.
Any of the following conditions is
met

Close and open either of
all doors and engine hood.Any of the following conditions is met

Press the unlock button of wireless.

Insert the key into the key cylinder of driver
or passenger seat and turn the key to unlock.

Insert the key into the ignition key cylinder.

Reconnect the battery.
Any of the following conditions is met

Press unlock switch of the wireless.

Insert the key into the driver and passenger
doors key cylinders, turn the key to unlock.

Insert the key into the ignition key cylinder
and turn the key to ON.
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±145
2446 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)