Page 98 of 1111
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
Page 99 of 1111
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.
Page 148 of 1111
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 ±
Page 164 of 1111
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
Page 166 of 1111
I05185UNLOCK LOCK3 5 6 Front left side:
I05183
1 2 4
LOCK
UNLOCK Front right side
I04136
3 4 UNLOCK 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.
Page 174 of 1111
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.
Page 175 of 1111
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.
Page 176 of 1111
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.
