lock LEXUS GS400 2000 Service Manual PDF

BE±164
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2465 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
Within
3 secs.
Turn the ignition switch from ON to LOCK at approx. 1 sec. interval 1 to 5 times to select the mode.
Pull out the key plate from the ignition key cylinder.
When add mode or rewrite mode
is selected.When confirmation
mode is selected.
ON
ONON
LOCK
LOCKLOCK
Approx.
1 sec.Approx.
1 sec. Approx. 1 sec.Approx.
1 sec.Approx.
1 sec.
Add mode
Rewrite modeConfirmation mode
ON ± LOCK change occurs 1 time
ON ± LOCK change occurs 2 timesON ± LOCK change occurs 3 times
MPX body ECU automatically performs
the LOCK±UNLOCK operation once
or twice at 1 sec. interval to iniform the
operator that either the add mode or
rewrite mode has been selected.
LOCK±UNLOCK occurs once
LOCK±UNLOCK occurs twice
Indicates that add mode has been selected.
Indicates that rewrite mode has been
selected.
1 sec.
LOCK
1 sec.1 sec.
LOCK
UNLOCK
UNLOCK
LOCK
2 secs.2 secs.
UNLOCK MPX body ECU automatically performs the
LOCK±UNLOCK operation 1 to 4 times at
2 sec. interval to inform the operator of
the number of the registered codes.
HINT:
When the number of the registered code
is 0, the operation is automatically
performed 5 times.
Example:
When the operation is performed twice, it
directs that 2 types of recognition code
have been registered.
1st time 2nd time
Registration of recognition code (Confirmation
mode and prohibition mode) is completed.
ON
LOCK
Approx.
1 sec.Approx.
1 sec.
Prohibition mode
ON ± LOCK change occurs 5 times
When prohibition
mode is selected.

± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
BE±165
2466 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
MPX body performs LOCK±UNLOCK operation 5 times at a 1 sec.
interval to inform the operator that prohibition mode has been selected.
Press again either one of 3 switches on the transmitter for more than 1 sec.
MPX body ECU automatically performs LOCK±UNLOCK operation once or
twice at a 1 sec. interval to inform the operator that the receiver has received the
signal from the transmitter.
LOCK±UNLOCK occurs once
LOCK±UNLOCK occurs twice Registration of recognition code is completed
Registration of recognition code has not been completed.

Recognition code received first time and second time did not match.
Proceed to continue registration
If even one of the following conditions is satisfied, registration of recognition
codes is completed.

40 secs. elapses since the MPX body ECU response.

The driver's door is closed.

The key plate is inserted in the ignition key cylinder.

4 type recognition codes are registration at one time.
Registration of recognition codes (add mode or rewrite mode) is completed.
Within
3 secs.Within
40 secs.
ON
LOCK
Approx.
1 sec.Approx.
1 sec.
When prohibition
mode is selected.
Press the lock and unlock switches on the transmitter simultaneously within 1 sec.
If LOCK±UNLOCK operation can not be performed at all, the mode returns to the
normal mode, then start with ºStart registration of recognition codeº.
Proceed to finish registration
Within 40 secs.

BE0GK±06
I01367
Driver Side Junction Block

P SEAT (D) Fuse
Power Seat SwitchLumbar Support SwitchLifter Motor
Front Vertical Motor
Slide Motor
Reclining Motor
Power Seat SwitchLumbar Support Switch
Passenger Side Junction Block

P SEAT (P) Fuse
Lumbar Support Motor
Front Vertical Motor
Lumbar Support Switch
Lifter Motor
BE±166
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
2467 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
POWER SEAT CONTROL SYSTEM
LOCATION

N21865
(a)
(b)
2
112
N21866
21
N21867
2
1
N21865
(a)
(b)
21
1
2
N22086
21
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
BE±171
2472 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
9. INSPECT SLIDE MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
10. INSPECT SLIDE MOTOR PTC THERMISTOR OPERA-
TION
( ): Passenger side
(a) Connect the positive (+) lead from the battery to terminal
1 (2), the positive (+) lead from the ammeter to terminal
2 (1) and the negative (±) lead to the battery negative (±)
terminal, then move the seat cushion to the front position.
(b) Continue to apply voltage, check that current changes to
less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 (1) and the negative (±)
lead to terminal 1 (2), check that the seat cushion begins
to move backwards.
If operation is not as specified, replace the seat adjuster.
11. INSPECT FRONT VERTICAL MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
12. INSPECT FRONT VERTICAL MOTOR PTC THERM-
ISTOR OPERATION
( ): Passenger side
(a) Connect the positive (+) lead from the battery to terminal
1 (2), the positive (+) lead from the ammeter to terminal
2 (1) and the negative (±) lead to the battery negative (±)
terminal, then move the seat cushion to the highest posi-
tion.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.

N22087
21
N21865
(a)
1(b)
2
2
1
N22088
21
N22089
21
N21865
(a)
(b)
2
1
1 2 BE±172
± BODY ELECTRICALPOWER SEAT CONTROL SYSTEM
2473 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 (1) and the negative (±)
lead to terminal 1 (2), check that the seat cushion begins
to descend.
If operation is not as specified, replace the seat adjuster.
13. INSPECT LIFTER MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.
14. INSPECT LIFTER MOTOR PTC THERMISTOR OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
2 (1), the positive (+) lead from the ammeter to terminal
1 (2) and the negative (±) lead to the battery negative (±)
terminal, then move the seat cushion to the highest posi-
tion.
(b) Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.
(c) Disconnect the leads from the terminals.
(d) Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 1 (2) and the negative (±)
lead to terminal 2 (1), check that the seat cushion begins
to descend.
If operation is not as specified, replace the seat adjuster.
15. INSPECT RECLINING MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns counterclockwise.
(b) Reverse the polarity, check that the motor turns clock-
wise.
If operation is not as specified, replace the seat adjuster.

BE02J±10
I01368
Mirror Assembly

Mirror Motor
Mirror Switch

Left/Right Adjustment Switch

Mirror Control SwitchIgnition Switch
Driver Side Junction Block

Body ECU No.2
± BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
BE±175
2476 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
POWER MIRROR CONTROL SYSTEM
LOCATION

BE0HC±06
I01369
Electro Chromic Outer Mirror
Electro Chromic Inner Mirror
Driver Side Junction Block

ECU±IG Fuse
± BODY ELECTRICALELECTRO CHROMIC MIRROR SYSTEM
BE±181
2482 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
ELECTRO CHROMIC MIRROR SYSTEM
LOCATION

BE0HD±04
I05186
ºBrightº ºDarkº1
2
3
4
Black coloured tape
I04048
Wire Harnes Side BE±182
± BODY ELECTRICALELECTRO CHROMIC MIRROR SYSTEM
2483 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT ELECTRO CHROMIC INNER MIRROR OP-
ERATION
(a) Connect the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 4.
(b) Connect the positive (+) lead from the voltmeter to termi-
nal 2 and the negative (±) lead to terminal 3.
(c) Attach a black coloured tape to forward sensor to prevent
it from sensing.
(d) When the mode is turned to AUTO, check that indicator
light lights up.
(e) Light up the mirror with an electric light, and check that
there is battery positive voltage and mirror surface
changes ºbrightº to ºdarkº.
If operation is not as specified, replace the inner mirror.
2. INSPECT ELECTRO CHROMIC INNER MIRROR CIR-
CUIT
Disconnect the connector from the mirror and inspect the con-
nector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
4 ± GroundConstantContinuity
1 ± GroundIgnition switch LOCK or ACCNo voltage
1 ± GroundIgnition switch ONBattery positive voltage
If circuit is not as specified, inspect the circuits connected to
other parts.

BE0GH±10
I01370
Ignition Switch
Seat Heater SwitchPassenger Side Junction Block
SEAT±HTR Fuse
Seat Heater CushionSeat Heater Back
Seat Heater Cushion Inner
BE±184
± BODY ELECTRICALSEAT HEATER SYSTEM
2485 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
SEAT HEATER SYSTEM
LOCATION

BE0GF±05
I01371
Fuel Lid Opener Switch
Driver Side Junction Block

FUEL OPN Fuse
Fuel Lid Opener Motor
± BODY ELECTRICALFUEL LID OPENER SYSTEM
BE±187
2488 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FUEL LID OPENER SYSTEM
LOCATION