ESP LEXUS GS400 2000 Service Repair Manual

BE±154
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2455 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
No
No
(Not entered in self
diagnostic mode)Is the method to enter into the
diagnostic mode correct?
Self diagnostic mode operation check:
Ye s
(Entered in self diagnostic mode)
After the self diagnostic mode input operation has
been performed, check that the buzzer chirps.
ON
OFF BuzzerIgnition switch OFF
0.13 sec. 0.5 sec.
Is the chirping function of operation
confirmation buzzer normal?
Check door control buzzer.
Check that continuity exists between
connector terminal A3 of MPX body ECU
on the vehicle side and ground by
inserting the key plate into the ignition
key cylinder. Key unlock warning switch inspection:
Ye s Ye s
No
Check key unlock warning switch.
Self diagnostic mode check:
Check that how the buzzer chirps when pressing
each transmitter switch.
ON
OFF Buzzer
0.13 sec.0.5 sec.
(1) Receiver normal wave of LOCK switch.
ON
OFF Buzzer
0.13 sec.
0.25 sec.
(2) Receiver normal wave of UNLOCK switch.
0.5 sec.
ON
OFF Buzzer
(3) Receiver normal wave of luggage door switch.
0.5 sec.0.5 sec.
ON
OFF (4) Incompatibility of the recognition code or out
from synchronization of rolling code.
While receiving
<Reference>:
While turning the ignition switch ON in the self
diagnostic mode, the mode returns to normal mode. Buzzer
(1), (2) or (3) are output.(4) is output.
(All buzzer's response
is same.)
Recognition code registration function check:
Check that it is possible to enter into
rewrite mode or add mode.
(Refer to ºWireless door lock receiver and
transmitterº ± ºRecognition code registrationº.)
Wireless door lock operates
normally when recognition code
is registered.
No response from buzzer

I04150
I04151
BE±158
± BODY ELECTRICALWIRELESS DOOR LOCK CONTROL SYSTEM
2459 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
2. CHECK BATTERY CAPACITY
HINT:

Make sure to use the TOYOTA electrical tester.

With the battery unloaded, judge can not be made wheth-
er the battery is available or not on the test.

When the transmitter is faulty, the energy amount left in
the battery might not be checked correctly.

On the lithium battery used for the transmitter, the voltage
more than 2.5 V with the battery unloaded is shown on the
tester until the energy is completely consumed.
Accordingly when inspecting the energy amount left in the
battery, it is necessary to measure the voltage when the
battery is loaded. (1.2 kW).
(a) Remove the screws and cover using a (±) driver.
(b) Remove the battery (lithium battery) from the transmitter.
(c) Connect the lead to the (±) terminal of the transmitter and
install the battery.
(d) Connect the (+) tester to the (+) battery (lithium battery),
and (±) tester to the lead respectively.
(e) Press one of the transmitting switches on the transmitter
for approx. 1 second.
(f) Press the transmitting switch on the transmitter again to
check the voltage.
Standard: 2.1 V or more

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.

± 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.

DTCDiagnosis item
Diagnosis contentCountermeasure
and inspected parts
D1
FF
60Radio receiver check. FM tuner error
42
50Cassette error
Transmitter error
Diagnosis no response
CD error
61
EJECT error
62
63
64
67DISC inside out/flaw
Pickup temperature
detection
Excessive current
detection
Tray insertion/
discharging errorThere is an error in FM tuner.
There is an error in cassette
deck.
Communication with the
equipment that is
communicating has failed
successively.
Result of diagnosis is not
issued from start to finish.
Error codes other than
61±69 are detected.
CD is not ejected.
CD is inserted inside
out or it has a flaw.
High temperature of CD
changer is detected.
Excessive current to
CD changer is detected.
An error occurs in insertion
and discharging operation of
CD changer tray.Radio receiver check.
CD changer check.
CD changer check.
Magazine check.
CD check.
CD changer check.
CD changer check.
Magazine check. Radio receiver check.
Wire harness and
connecter check.
CD
(240)
(360)System
Check
Diagnosis
memory
X
 X

X
X
X
X
X
X
X



 Head
Unit
(190) Parts
Name
51Cassette eject errorCassette can not be ejected
from Head Unit.
 X
D2Periodic
communication
no response
Error in periodic
communication. Wire harness and
connector X

68
D1
D4Elevator error
Periodic communication
errorAn error occurs in
elevator of CD changer
elevator.X

X

 Transmitter error
 Radio receiver check.
 Wire harness check.
CD changer check.
Communication with the
equipment that is
communicating has failed
successively.
Connection confirmation
has not come from the
equipment that is
communicating BE±194
± BODY ELECTRICALAUDIO SYSTEM
2495 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
3. DIAGNOSIS CODE LIST
If there is ºOº in the column of system check, an error can be detected when the mode is switched to
the system check mode.
If there is ºOº in the column of diagnosis mode, each unit is monitoring whether or not it has failure.
In case of detectng failure, it memorizes DTC.

I07728
20.9 mm (0.823 in.)
0.4°
3 m (9.84 ft)
W
V Center
Line
V LH Line V RH Line
H
HRH Line3 cm
(0.57°)LH
Line
W
I04297
Beam Angle Gauge
(Vertical Alignment)
Acceptable
Range
Bubble
± BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE±47
2348 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Check the headlight aimming.
(1) Prepare the thick white colored paper.
(2) Stand the paper perpendicularly and ensure the
distance from it to the head lights is 9.84 ft.
(3) Ensure that the center line of vehicle and the paper
are at a 90 degree angle as shown in the illustration.
(H line)
(4) Engine running.
(5) Draw a horizontal line on the paper where the head
lights of the vehicle are to be.
(6) Draw a vertical line on the paper where the center
line of the vehicle is to be. (V center line)
(7) Take an appropriate measure to avoid affecting the
other light. (V RH and LH lines)
NOTICE:

Disconnect the connector of the other light to avoid
heat affection from the light because the outer lens of
the head light assembly is made of synthetic resin.
When connecting the connector again take care not
to wake the aiming out of adjustment.

When covering the headlight, finish it within 3 min-
utes.
(8) Turn the head lights ON.
(9) Check that the head lights light up the paper as
shown in the illustration.
(10) When the paper is not lighted up properly, adjust the
lights in the vertical or horizontal direction.
HINT:
As shown in the illustration, adjust aiming of the LH and RH
lights along each vertical line respectively.
(d) Vertical Alignment:
Adjust the headlight aimming.
(1) Using adjustment bolt A, adjust the headlight aim-
ing to within the specifiactions.
(2) Make sure the gauge bubble is within the accept-
able range.
HINT:
If the gauge bubble is outside the acceptable range, check that
the vehicle is parked on a level spot.
Readjust the headlight aiming after parking the vehicle on a lev-
el spot.

F06045
Reservoir Set Screw
Hydraulic Brake Booster
Oil Pressure
Sensor
No. 1 Accumulator
BracketNo. 2
Accumulator
Bracket
No. 1 Pump
Bracket
Actuator No. 1 TubeAccumulator

O±ring
Spring
Silencer Tube Grommet
No. 2 Piston
No. 1 PistonSnap Ring
BootClevis Reservoir
Cap
No. 2 Pump
Bracket Sleeve
Collar
Booster Pump Motor
Cushion Washer Actuator Hose
15 (155, 11)
54 (550, 36)
1.7 (17.5, 15.2 in.´lbf)
81 (830, 60)
Non±reusable part


Cushion Cushion
Collar
Cushion
25 (260, 19)
N´m (kgf´cm, ft´lbf) : Specified torqueSpacer

O±ring
Clamp

Wire Harness
± BRAKEHYDRAULIC BRAKE BOOSTER
BR±49
2157 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

BR0KC±03
F02900
C
AB
E
D
F02901
mm (in.)
1.1
(0.0433)
Clearance
ºAº
0.1
(0.0039)
Clearance ºBº 0.1
(0.0039) 1.1
(0.0433)
Clearance ºEº Clearance
ºDº
mm (in.) 0.095
(0.0374)
0.3
(0.0118)
0.25
(0.0098) 0.65
(0.0256)mm (in.) mm (in.)
± BRAKEHYDRAULIC BRAKE BOOSTER
BR±55
2163 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REASSEMBLY
Reassembly is in the reverse order of disassembly
(See page BR±51).
INSTALL ACCUMULATOR BRACKET
When installing the accumulator bracket, adjust to ensure that
clearance (A, B, D and E) shown in the illustration on the left
crresponds to each value in the graphs below and are within the
C range, using a thickness gauge.
C Range: 0.1 ± 0.4 mm (0.004 ± 0.016 in.)

A02747
Front Mark
(Cavity)
Front
P04479
P02426
EM±94
± ENGINE MECHANICAL (2JZ±GE)CYLINDER BLOCK
1448 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
Thrust washer thickness:
1.940 ± 1.990 mm (0.0764 ± 0.0783 in.)
10. INSTALL PISTON AND CONNECTING ROD
ASSEMBLIES
Using a piston ring compressor, push the correctly numbered
piston and connecting rod assemblies into each cylinder with
the front mark of the piston facing forward.
11. PLACE CONNECTING ROD CAP ON CONNECTING
ROD
(a) Match the numbered connecting rod cap with the con-
necting rod.
(b) Install the connecting rod cap with by aligning the dowel
pin to the corresponding hole.
12. INSTALL CONNECTING ROD CAP BOLTS
HINT:

The connecting rod cap bolts are tightened in 2 progres-
sive steps (steps (b) and (d)).

If any of the connecting rod bolts break or deform, replace
them.
(a) Apply a light coat of engine oil on the threads and under
the heads of the connecting rod cap bolts.
(b) Install and alternately tighten the bolts of the connecting
rod cap in several passes.
Torque: 30 N´m (300 kgf´cm, 22 ft´lbf)
If any one of the connecting rod cap bolts does not meet the
torque specification, replace the cap bolt.

DTC No.
Indicates the diagnostic trouble code.

Page or Instructions
Indicates the page where the inspection procedure
for each circuit is to be found, or gives instructions
for checking and repairs.

Detection Item
Indicates the system of the problem or
contents of the problem.
Trouble Area
Indicates the suspect area of the
problem.
Mass Air Flow Circuit MalfunctionDetection Item

Open or short in mass air flow meter circuit

Mass air flow meter

ECM DTC No.
(See page)Trouble AreaMIL* MemoryP0100
(DI±24)
P0101
(DI±28)
P0115
(DI±33)
Open or short in intake air temp. sensor
circuit

Intake air temp. sensor

ECM Intake Air Temp. Circuit
Malfunction P0110
(DI±29)

Open or short in engine coolant temp. sensor circuit

Engine coolant temp. sensor

ECM
Throttle/ Pedal Position Sensor/Switch
ºAº Circuit MalfunctionEngine Coolant Temp.
Circuit Malfunction

Open or short in throttle position sensor circuit

Throttle position sensor

ECM
DTC CHART (SAE Controlled)
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to the type of instrument or other
factors.
If a malfunction code is displayed during the DTC check mode, check the circuit for that code listed in the table
below. For details of each code, turn to the page referred to under the ºSee pageº for the respective ºDTC No.º
in the DTC chart.
Mass Air Flow Circuit
Range/ Performance Problem
Mass air flow meter

Throttle position sensor Throttle/ Pedal Position Sensor/ Switch
ºAº Circuit Range / Performance Prob-
lem P0116
(DI±37)Engine Coolant Temp.
Circuit Range/ Performance Problem
Engine coolant temp. sensor

Cooling system
± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN±27
27 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
4. DIAGNOSTIC TROUBLE CODE CHART
The inspection procedure is shown in the table below. This table permits efficient and accurate troubleshoot-
ing using the diagnostic trouble codes displayed in the diagnostic trouble code check. Proceed with trouble-
shooting in accordance with the inspection procedure given in the diagnostic chart corresponding to the
diagnostic trouble codes displayed. The engine diagnostic trouble code chart is shown below as an example.