2000 LEXUS GS400 wiring

B01982
LEXUS
Hand±Held
TesterSF0N2±05
B09511
Up
Screw
Pulsation Damper
B01958
Fuel Inlet Hose
A02818
SST
SST
(Union)
SST
(Adapter)
SF±6
± SFI (2JZ±GE)FUEL PUMP
1472 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
FUEL PUMP
ON±VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Connect a LEXUS hand±held tester to the DLC3.
(b) Turn the ignition switch ON and LEXUS hand±held tester
main switch ON.
NOTICE:
Do not start the engine.
(c) Select the ACTIVE TEST mode on the LEXUS hand±held
tester.
(d) Please refer to the LEXUS hand±held tester operator's
manual for further details.
(e) If you have no LEXUS hand±held tester, connect the pos-
itive (+) and negative (±) leads from the battery to the fuel
pump connector. (See step 3)
(f) Check that the pulsation damper screw rises up when the
fuel pump operates.
If there is no pressure, check the fusible link, fuses, EFI main
relay, fuel pump ECU, fuel pump, ECM and wiring connections.
(g) Turn the ignition switch OFF.
(h) Disconnect the LEXUS hand±held tester from the DLC3.
2. CHECK FUEL PRESSURE
(a) Check the battery positive voltage is above 12 V.
(b) Disconnect the negative (±) terminal cable from the bat-
tery.
(c) Remove the union bolt and 2 gaskets, and disconnect the
fuel inlet hose from the fuel pipe support.
NOTICE:

Put a shop towel under the fuel pipe support.

Slowly loosen the union bolt.
(d) Install the fuel inlet hose and SST (pressure gauge) to the
fuel pipe support with the 3 gaskets and SST (union and
adapter).
SST 09268±45014 (09268±41190, 90405±06167)
Torque: 29 N´m (300 kgf´cm, 21 ft´lbf)
(e) Wipe off any splattered gasoline.

SF0O8±01
B07574
Voltmeter
Disconnect
E2VC
B07575
Disconnect
Pressure
Vacuum
PTNK
ECM
E2Voltmeter
± SFI (2JZ±GE)VAPOR PRESSURE SENSOR
SF±61
1527 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT POWER SOURCE VOLTAGE OF VAPOR
PRESSURE SENSOR
(a) Disconnect the vapor pressure sensor connector.
(b) Turn the ignition switch ON.
(c) Using a voltmeter, measure the voltage between connec-
tor terminals VC and E2 of the wiring harness side.
Voltage: 4.5 ± 5.5 V
(d) Turn the ignition switch OFF.
(e) Reconnect the vapor pressure sensor connector.
2. INSPECT POWER OUTPUT OF VAPOR PRESSURE
SENSOR
(a) Turn the ignition switch ON.
(b) Disconnect the vacuum hose from the vapor pressure
sensor.
(c) Connect a voltmeter to terminals PTNK and E2 of the
ECM, and measure the output voltage under these condi-
tions:
(1) Apply vacuum (2.0 kPa (15 mmHg, 0.59 in.Hg)) to
the vapor pressure sensor.
Voltage: 1.3 ± 2.1 V
(2) Release the vacuum from the vapor pressure sen-
sor.
Voltage: 3.0 ± 3.6 V
(3) Apply pressure (1.5 kPa (15 gf/cm
2, 0.22 psi)) to the
vapor pressure sensor.
Voltage: 4.2 ± 4.8 V
(d) Turn the ignition switch OFF.
(e) Reconnect the vacuum hose to the vapor pressure sen-
sor.

RS07E±01
H02589
H02590
H02591
RS±28
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2259 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is in ON or ACC position, DTCs
will be recorded.

Never use airbag parts from another vehicle. When
replacing parts, replace with new parts.
1. DISCONNECT AIRBAG CONNECTOR
(a) Using a screwdriver, remove the glove compartment door
finish plate.
HINT:
Tape the screwdriver tip before use.
(b) Remove the airbag connector from the plate.
(c) Disconnect the airbag connector.
2. REMOVE INSTRUMENT PANEL
(See page BO±91)
3. REMOVE FRONT PASSENGER AIRBAG ASSEMBLY
(a) Remove the 2 bolts and 2 straps.
(b) Remove the 2 nuts and front passenger airbag assembly.
CAUTION:

Do not store the front passenger airbag assembly
with the airbag deployment side facing down.

Never disassemble the front passenger airbag as-
sembly.

RS07I±01
H02591
H02590
H04226
RS±38
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2269 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
NOTICE:
Never use airbag parts from another vehicle. When replac-
ing parts, replace with new parts.
1. INSTALL FRONT PASSENGER AIRBAG ASSEMBLY
(a) Install the front passenger airbag assembly with 2 nuts.
Torque: 5.6 N´m ( 57 kgf´cm, 49 in.´lbf)
NOTICE:

Pass the straps of the front passenger airbag door
through the brackets on the right and left sides se-
curely.

Install the straps so that they are not pinched be-
tween the airbag and instrument panel.
(b) Install the 2 straps and 2 bolts.
NOTICE:

When installing the front passenger airbag assembly,
make sure that the straps are not distorted and
installed to the brackets securely.

Make sure that the front passenger airbag assembly
is installed to the specified torque.

If the front passenger airbag assembly has been
dropped, or there are cracks, dents or other defects
in the case or connector, replace the front passenger
airbag assembly with a new one.

When installing the front passenger airbag assembly,
take care that the wiring does not interfere with other
parts and is not pinched between other parts.
2. INSTALL INSTRUMENT PANEL
(See page BO±97)
Install the 2 bolts to the instrument panel reinforcement.
Torque: 20 N´m (205 kgf´cm, 15 ft´lbf)
3. CONNECT AIRBAG CONNECTOR
(a) Connect the airbag connector.
(b) Install the airbag connector to glove compartment door
finish plate.
(c) Install the glove compartment door finish plate.

RS0JC±01
N20339
H03709
RS±40
± SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY
2271 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is in ON or ACC position, DTCs
will be recorded.

Never use the airbag parts from another vehicle.
When replacing parts, replace them with new parts.
1. REMOVE FRONT SEAT OUTER BELT FLOOR AN-
CHOR
(a) Using a screwdriver, remove the seat belt anchor cover
cap.
HINT:
Tape the screwdriver tip before use.
(b) Remove the front seat outer belt floor anchor.
2. REMOVE FRONT SEAT
(a) Using a screwdriver, remove the 4 seat track covers.
HINT:
Tape the screwdriver tip before use.
(b) Remove the 4 bolts, then disconnect the airbag connec-
tor.
NOTICE:
When handling the airbag connector, take care not to dam-
age the airbag wire harness.
(c) Remove the front seat.
3. REMOVE HEADREST
4. REMOVE POWER SEAT SWITCH KNOBS
5. REMOVE FRONT SEAT CUSHION SHIELD
6. REMOVE FRONT SEAT INNER CUSHION COVER
7. REMOVE SIDE AIRBAG ASSEMBLY WIRE HARNESS
(a) Remove the connector from the bracket.
(b) Remove the 5 clamps and wire harness from the seat
cushion frame
8. REMOVE SEAT CUSHION ASSEMBLY
(a) Remove the wire harness from the seat cushion asseml-
by.
(b) Remove the 4 bolts and seat cushion assemlby from the
seat adjuster.

RS07T±01
H02616
RS±56
± SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
2287 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
NOTICE:

Never use SRS parts from another vehicle. When re-
placing parts, replace them with new parts.

Never reuse the airbag sensor assembly involved in
a collision when the airbag has deployed.

Never repair a sensor in order to reuse it.
1. INSTALL AIRBAG SENSOR ASSEMBLY
(a) Using a torx wrench, install the airbag sensor assembly
with 3 screws.
Torx wrench: T40 (Part No.09042±00020 or locally
manufactured tool)
Torque: 20 N´m (200 kgf´cm, 14 ft´lbf)
(b) Connect the airbag sensor connectors.
NOTICE:

Installation of the connector is done with the sensor
assembly installed. Make sure the sensor assembly
is installed to the specified torque.

If the sensor assembly has been dropped, or there are
cracks, dents or other defects in the case, bracket or
connector, replace the sensor assembly with a new
one.

When installing the senor assembly, take care that
the SRS wiring does not interfere with other parts and
is not pinched between other parts.

After installing , shake the sensor assembly to check
that there is no looseness.
2. INSTALL THESE PARTS: (See page BO±97)
(a) No.1 console box duct
(b) No.3 console box mounting bracket
(c) Console box
(d) Console box register
(e) Rear console armrest
(f) Lower rear console box
(g) Accessary case
(h) Accessary socket
(i) Console box carpet
(j) Cluster finish panel
(k) Front ash receptacle
(l) Glove compartment panel assembly
(m) Glove compartment finish plate
(n) No.2 under cover
(o) No.1 safety pad
(p) Hood lock release lever
(q) No.1 under cover
(r) End Pad
(s) Finish plate

RS07V±01
H02694
H02695
H02696
RS±58
± SUPPLEMENTAL RESTRAINT SYSTEMFRONT AIRBAG SENSOR
2289 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
with the ignition switch in ON or ACC position, DTCs
will be recorded.

Never use SRS parts from another vehicle. When re-
placing parts, replace them with new parts.

Never reuse the sensor involved in a collision when
the SRS has deployed.

Never repair a sensor in order to reuse it.
1. REMOVE LH FRONT AIRBAG SENSOR
(a) Remove the 2 bolts and J/B cover.
(b) Remove the bolt and 2 nuts.
(c) Disconnect the connectors and hose, then remove the
J/B box.
(d) Disconnect the connector, then remove the bolt, nut and
sensor.

RS083±01
H02619
± SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG SENSOR ASSEMBLY
RS±67
2298 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
NOTICE:

Never use SRS parts from another vehicle. When re-
placing parts, replace them with new ones.

Never reuse the side airbag sensor assembly in-
volved in a collision when the airbag has deployed.

Never repair a sensor in order to reuse it.
1. INSTALL SIDE AIRBAG SENSOR
(a) Using a torx wrench, install the side airbag assembly with
4 screws.
Torx wrench: T40 (Part No.09042±00020 or locally
manufactured tool)
Torque: 20 N´m (200 kgf´cm, 14 ft´lbf)
(b) Connect the connector.
NOTICE:

Make sure the sensor assembly is installed to the
specified torque.

If the sensor assembly has been dropped, or there are
cracks, dents or other defects in the case, bracket or
connector, replace the sensor assembly with a new
one.

When installing the sensor assembly, take care that
the SRS wiring does not interfere with other parts and
is not pinched between other parts.

After installation, shake the sensor assembly to
check that there is no looseness.
2. INSTALL FRONT SEAT OUTER BELT RETRACTOR
(See page BO±132)
(a) Install the retractor with 2 bolts.
HINT:
After tightening the upper bolt, tighten the lower bolt.
Torque:
Upper bolt: 7.4 N´m (75 kgf´cm, 65 in.´lbf)
Lower bolt: 41 N´m (420 kgf´cm, 30 ft´lbf)
(b) w/ Seat Belt Warning:
Connect the retractor switch connector.
(c) w/ Seat Belt Pretensioner:
Connect the pretensioner connector.
3. INSTALL THESE PARTS:
(a) Center pillar lower garnish
(b) Rear door scuff plate
(c) Front door scuff plate