2000 LEXUS GS400 ECO mode

BE±162
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2463 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
2. REPLACE DOOR CONTROL RECEIVER AND TRANS-
MITTER
NOTICE:
When replacing the door control receiver and transmitter,
registration of recongnition code is necessary because
they are provided as single components.
(a) Select which operation mode should be performed from
the following modes.
Add mode
Rewrite mode
Prohibition mode
Confirmation mode
HINT:
The add mode is used to retain codes already registered
while you register new recongnition codes. This mode is
used when adding a transmitter. However, if the number
of registered codes exceeds 4 codes, previously regis-
tered codes are correspondingly erased in order, starting
from the first registered code.
The rewrite mode is used to erase all previously regis-
tered codes and register only new recognition codes.
The prohibition mode is used to erase all registered codes
and cancels the wireless door lock function. Use this
mode when the transmitter is lost.
The confirmation mode is for confirming how many re-
congnition codes are already registered before you regis-
ter additional recognition codes.
(b) Follow the chart on the following pages to register the
transmitter recongnition code at the wireless door lock
conrol receiver.
HINT:
When procedure is out of the specified, the operation re-
turns to normal operation.
Maximum 4 recognition codes can be registered.

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.

I07735
± BODY ELECTRICALAUDIO SYSTEM
BE±191
2492 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
2. DIAGNOSIS FUNCTION (PIONEER made)
Error codes over tuner and connected equipment are displayed on the screen of tuner.
(a) Diagnosis start±up
For shifting to diagnosis mode, push ºCDº switch 3 times with pressing º1º and º6º of PRESET switch
at the same time while the audio power is OFF and ACC is ON.
To exit from diagnosis mode, press ºCDº switch for 2 seconds or turn the ignition key OFF.
(When º1±190º is displayed, the mode is transferred to LAN check mode.)
(b) LAN check
When starting up the diagnosis mode, the mode turns to LAN check mode, the screen displays the
code numbers (physical address) of tuner and connected equipment. Smaller codes are displayed in
order, displayed code numbers are switched by operating TUNE ºUPº or ºDOWNº switch. In LAN check
mode, by pressing º5º of PRESET switch for more than 2 secs., diagnosis memory of each equipment
can be deleted, when deletion is completed, the mode returns to LAN check mode.
Code No. (physical address) List
Code No. (physical address)Equipment name
190Radio receiver assembly (Audio head unit)
240CD changer (in Luggage room)
360CD changer (in center console and glove compartment box)
440Power amplifier
(c) System check
When pressing º1º of PRESET switch in LAN check mode, the mode turns to the system check
mode, the system performs self diagnosis of connected equipment and displays the re-
sults.(ºSYSº (showing the system is under detection) is displayed.)
Perform the operation shown in the following illustration, then read the result of the inspection.

BE0N6±04
I05587
2 5
I05580
2 5
Z08688
2 13
45 768 Wire Harness Side
± BODY ELECTRICALANTENNA
BE±225
2526 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. Auto Antenna Models:
INSPECT ANTENNA MOTOR
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 5.
(b) Check that the motor turns (moves upward).
NOTICE:
These tests must be done quickly (within 3 ± 5 seconds) to
prevent the coil from burning out.
(c) Then, reverse the polarity, check that the motor turns the
opposite way (moves downward).
NOTICE:
These tests must be done quickly (within 3 ± 5 seconds) to
prevent the coil from burning out.
2. Auto Antenna Models:
INSPECT ANTENNA MOTOR CONTROL RELAY CIR-
CUIT
Disconnect the connector from the relay and inspect the con-
nector on wire harness side, as shown in the chart below.
Tester connectionConditionSpecified condition
7 ± GroundConstantContinuity
1 ± GroundIgnition switch ACC or ON,
and radio switch ON and OthersNo voltage
1 ± GroundIgnition switch ACC or ON,
and radio switch ON and AMBattery positive voltage
2 ± GroundIgnition switch ACC or ON,
and radio or tape or CD switch OFFNo voltage
2 ± GroundIgnition switch ACC or ON,
and radio or tape or CD switch ONBattery positive voltage
3 ± GroundConstantBattery positive voltage
4 ± GroundIgnition switch ACC or ON,
and radio switch ON and OthersNo voltage
4 ± Ground
Ignition switch ACC or ON,
and radio switch ON and
AM or FM (87.9 ± 96.0 MHz)
Battery positive voltage
5 ± GroundIgnition switch ACC or ON,
and radio switch OFFNo voltage
5 ± GroundIgnition switch ACC or ON,
and radio switch ONBattery positive voltage

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.

BE0G7±07
START
Insert the key in the key cylinder.
Under registration
Registration completion
Remove the key.
Will you register the
next key?
NoSecurity indicator blinks until the first
key is inserted. The indicator light
lights up after the key registration.
Security Indicator ON
Security Indicator
OFF
END Ye s
Security Indicator ON
(After the last key (sub±key)
has been registered, the indi-
cator goes off.)
BE±238
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
2539 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
ENGINE IMMOBILISER SYSTEM
REGISTRATION PROCEDURE
1. KEY REGISTRATION IN AUTOMATIC REGISTRATION MODE
(a) Registration of a new transponder key.
HINT:

This must be done when you install a new ECM.

The new ECM is in the automatic key code registration mode. The already fixed number of key codes
for this ECM can be registered.
On this type of vehicle, up to 3 key codes can be registered.

In the automatic registration mode, the key registered last becomes the sub±key.

D01827
± BRAKEHYDRAULIC BRAKE BOOSTER
BR±39
2147 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
2. IN CASE OF USING LEXUS HAND±HELD TESTER:
INSPECT HYDRAULIC BRAKE BOOSTER OPERA-
TION
(a) Inspect the battery positive voltage.
Battery positive voltage: 10 ± 14 V
(b) Turn the ignition switch OFF, depress the brake pedal
more than 40 times.
(c) Check that the brake pedal becomes heavy to depress.
If the pedal does not become to be heavy to depress, check and
replace the brake line and hydraulic brake booster.
(d) Turn the ignition switch ON, check the pump motor opera-
tion noise.
If the pump motor does not operate, check and replace the wire
harness and pump motor (See page BR±53).
(e) Connect the LEXUS hand±held tester.
(1) Connect the LEXUS hand±held tester to the DLC3.
(2) Turn the ignition switch ON.
(3) Select the ºACTIVE TESTº mode on the LEXUS
hand±held tester.
HINT:

Please refer to the LEXUS hand±held tester operator's
manual for further details.

To protect the solenoids, hand±held tester turns OFF au-
tomatically 2 secs. after every solenoid has been turned
ON.
(f) Inspect the front TRAC & VSC solenoid operation.
(1) Select ºSA1º and ºSA2º on the LEXUS hand±held
tester.
(2) With ºSA1º and ºSA2º turned ON simultaneously
with the LEXUS hand±held tester, depress the
brake pedal with stable force and check that the
pedal cannot be depressed.
HINT:
To protect the solenoids, LEXUS hand±held tester turns OFF
automatically 2 sec. after every solenoid has been turned ON.
If the pedal can be depressed, replace the hydraulic brake
booster.
NOTICE:
When operating it continuously, set the interval of more
than 20 seconds.
(3) Once, release the brake pedal.