battery LEXUS GS400 2000 Service Repair Manual

FI2553
SST
SF±2
± SFI (2JZ±GE)SFI SYSTEM
1468 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
7. ELECTRONIC CONTROL SYSTEM
(a) Before removing SFI wiring connectors, terminals, etc.,
first disconnect the power by either turning the ignition
switch OFF or disconnecting the negative (±) terminal
cable from the battery.
HINT:
Always check the diagnostic trouble code before disconnecting
the negative (±) terminal cable from the battery.
(b) When installing the battery, be especially careful not to in-
correctly connect the positive (+) and negative (±) cable
terminals.
(c) Do not permit parts to receive a severe impact during re-
moval or installation. Handle all SFI parts carefully, espe-
cially the ECM.
(d) Do not be careless during troubleshooting as there are
numerous transistor circuits and even slight terminal con-
tact can further troubles.
(e) Do not open the ECM cover.
(f) When inspecting during rainy weather, take care to pre-
vent entry of water. Also, when washing the engine
compartment, prevent water from getting on the SFI parts
and wiring connectors.
(g) Parts should be replaced as an assembly.
(h) Care is required when pulling out and inserting wiring con-
nectors.
(1) Release the lock and pull out the connector, pulling
on the connectors.
(2) Fully insert the connector and check that it is locked.
(i) When inspecting a connector with a volt/ohmmeter.
(1) Carefully take out the water±proofing rubber if it is
a water±proof type connector.
(2) Insert the test probe into the connector from wiring
side when checking the continuity, amperage or
voltage.
(3) Do not apply unnecessary force to the terminal.
(4) After checking, install the water±proofing rubber on
the connector securely.
(5) Use SST for inspection or test of the injector or its
wiring connector.
SST 09842±30070

B01578
Injector SST
(Attachment) Fuse Tube
(On Vehicle)
SST
(Hose)
SST
(Adapter)
SST
(Clamp)
SF0NC±03
B01938
SST (Attachment)SST (Hose)
Disconnect
Fuel Inlet Hose
B01576
SST (Hose)
SST (Adapter)
SST
(Clamp)O±Ring
Vinyl Hose
B01982
LEXUS
Hand±Held
Tester SF±22
± SFI (2JZ±GE)INJECTOR
1488 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT INJECTOR INJECTION
CAUTION:
Keep injector clear of sparks during the test.
(a) Remove the nut, and disconnect the fuel inlet hose from
the fuel main tube.
(b) Temporarily install SST (attachment) to the fuel main
tube.
SST 09268±41047 (09268±52011)
(c) Tighten the flare nut on the fuel main tube.
(See page SF±1)
(d) Connect SST (hose) to the SST (attachment).
SST 09268±41047
(e) Install the O±ring to the injector.
(f) Connect SST (hose) to the injector with SST (adapter),
and hold the injector and adapter with SST (clamp).
SST 09268±41047 (09268±41110, 09268±41300)
(g) Put the injector into the graduated cylinder.
CAUTION:
Install a suitable vinyl hose onto the injector to prevent
gasoline from splashing out.
(h) Connect the LEXUS hand±held tester to the DLC3.
(i) Connect the battery negative (±) terminal cable to the bat-
tery.
(j) Turn the ignition switch ON and LEXUS hand±held tester
main switch ON.
NOTICE:
Do not start the engine.
(k) Select the ACTIVE TEST mode on the LEXUS hand±held
tester.
(l) Please refer to the LEXUS hand±held tester operator's
manual for further details.
(m) If you have no LEXUS hand±held tester, connect the pos-
itive (+) and negative (±) leads from the battery to the fuel
pump connector. (See page SF±6)

B01577
SST
(Wire)
Connect
B02009
± SFI (2JZ±GE)INJECTOR
SF±23
1489 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(n) Connect SST (wire) to the injector and battery for 15 se-
conds, and measure the injection volume with a gra-
duated cylinder. Test each injector 2 or 3 times.
SST 09842±30070
Injection volume:
60 ± 73 cm
3 (3.7 ± 4.5 cu in.) per 15 seconds
Difference between each injector:
13 cm
3 (0.8 cu in.) or less
If the injection volume is not as specified, replace the injector.
2. INSPECT LEAKAGE
(a) In the condition above, disconnect the test probes of SST
(wire) from the battery and check the fuel leakage from
the injector.
SST 09842±30070
Fuel drop: 1 drop or less per 12 minutes
(b) Turn the ignition switch OFF.
(c) Disconnect the negative (±) terminal cable from the bat-
tery.
(d) Remove the SST.
SST 09268±41047, 09842±30070
(e) Reconnect the fuel inlet hose to the fuel main tube.
(See page SF±1)
(f) Install the fuel inlet hose with the nut.
Torque: 9 N´m (90 kgf´cm, 80 in.´lbf)
(g) Disconnect the LEXUS hand±held tester from the DLC3.

SF0NK±03
B01956
B01856
OhmmeterTHA
E2E2
B01857
VoltmeterE2G
VG
Air
± SFI (2JZ±GE)MASS AIR FLOW (MAF) METER
SF±31
1497 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. REMOVE MAF METER
(a) Disconnect the MAF meter connector.
(b) Remove the 2 bolts, MAF meter, gasket and stay.
2. INSPECT MAF METER RESISTANCE
Using an ohmmeter, measure the resistance between terminals
THA and E2.
TerminalsResistanceTemperature
THA±E213.6 ± 18.4 kW±20°C (±4°F)
THA±E22.21 ± 2.69 kW20°C (68°F)
THA±E20.493 ± 0.667 kW60°C (140°F)
If the resistance is not as specified, replace the MAF meter.
3. INSPECT MAF METER OPERATION
(a) Connect the MAF meter connector.
(b) Connect the negative (±) terminal cable to the battery.
(c) Turn the ignition switch ON.
(d) Using a voltmeter, connect the positive (+) tester probe to
terminal VG, and negative (±) tester probe to terminal
E2G.
(e) Blow air into the MAF meter, and check that the voltage
fluctuates.
If operation is not as specified, replace the MAF meter.
(f) Turn the ignition switch OFF.
(g) Disconnect the negative (±) terminal cable from the bat-
tery.
(h) Disconnect the MAF meter connector.
4. REINSTALL MAF METER
(a) Install the gasket to the MAF meter.
(b) Install the MAF meter with the 2 bolts and stay.
Torque: 10.7 N´m (109 kgf´cm 8 ft´lbf)
(c) Connect the MAF meter connector.

A02640
Ohmmeter
SF0NR±03
± SFI (2JZ±GE)CAMSHAFT TIMING OIL CONTROL VALVE
SF±41
1507 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
CAMSHAFT TIMING OIL CONTROL
VA LV E
ON±VEHICLE INSPECTION
1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
RESISTANCE
(a) Disconnect the oil control valve connector.
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance: 5.5 ± 12 W at 20°C (68°F)
If the resistance is not as specified, replace the valve.
(c) Reconnect the oil control valve connector.
2. INSPECT VVT±i OPERATION
(a) Allow the engine to warm up to normal operating tempera-
ture.
(b) Check that the engine stalls or becomes in rough±idling
state when the battery positive voltage is applied to the oil
control valve with the engine idling.
If operation is not as specified, check the oil control valve (see
page SF±43), VVT±i pulley, intake camshaft, wiring and ECM.

A02639
SF0NS±01
B01805
Valve
21
Battery positive voltage is applied
Battery positive voltage is cut offValve moves in
Valve moves indirection
direction
± SFI (2JZ±GE)CAMSHAFT TIMING OIL CONTROL VALVE
SF±43
1509 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. REMOVE NO.3 TIMING BELT COVER
2. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE
(a) Disconnect the oil control valve connector.
(b) Remove the bolt, oil control valve and O±ring.
3. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
OPERATION
Connect positive (+) lead from the battery to terminal 1 and neg-
ative (±) lead to terminal 2, and check the movement of the
valve.
If operation is not as specified, replace the valve.
4. REINSTALL CAMSHAFT TIMING OIL CONTROL
VA LV E
(a) Install a new O±ring to the oil control valve.
(b) Install the oil control valve with the bolt.
Torque: 8.0 N´m (80 kgf´cm, 71 in.´lbf)
(c) Connect the oil control valve connector.
5. REINSTALL NO.3 TIMING BELT COVER
Torque: 8.0 N´m (80 kgf´cm, 71 in.´lbf)

B01374
EFI Main
Relay
SF0NY±01
A00968
Ohmmeter
No Continuity5 Ohmmeter
Continuity
32
1
A00969
5 Ohmmeter
Continuity32 1
Battery SF±50
± SFI (2JZ±GE)EFI MAIN RELAY
1516 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EFI MAIN RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE EFI MAIN RELAY (Marking:EFI)
3. INSPECT EFI MAIN RELAY
(a) Inspect the relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
(b) Inspect the relay operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
4. REINSTALL EFI MAIN RELAY
5. REINSTALL RELAY BOX COVER

SF0O0±04
B01604
Ohmmeter
Continuity
B01605
No ContinuityOhmmeter
B01606
Air
B01607
Air
Battery SF±52
± SFI (2JZ±GE)VSV FOR EVAPORATIVE EMISSION (EVAP)
1518 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. REMOVE VSV
3. INSPECT VSV
(a) Inspect the VSV for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the terminals.
Resistance: 27 ± 33 W at 20°C (68°F)
If there is no continuity, replace the VSV.
(b) Inspect the VSV for ground.
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV.
(c) Inspect the VSV operation.
(1) Check that air does not flows from the ports.
(2) Apply battery positive voltage across the terminals.
(3) Check that air flows from the ports.
If operation is not specified, replace the VSV.
4. REINSTALL VSV
5. REINSTALL ENGINE COVER
Reinstall the engine cover with the 4 nuts.

P02689
Air
E
Filter
P02690
Air
E
F
Battery
± SFI (2JZ±GE)VSV FOR ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)SF±55
1521 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(c) Inspect the VSV operation.
(1) Check that air flows from port E to the filter.
(2) Apply battery positive voltage across the terminals.
(3) Check that air flows from ports E to F.
6. REINSTALL VSV
(a) Install the VSV with the screw to the vacuum tank.
(b) Install the vacuum hose.
7. REINSTALL VACUUM CONTROL VALVE SET
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
8. REINSTALL OIL DIPSTICK AND GUIDE FOR A/T
HINT:
Using a new O±ring.
9. REINSTALL SEGINE COVER
Reinstall the engine cover with the 4 nuts.

SF0O4±01
B01273
Ohmmeter
Continuity
B00798
Ohmmeter
No Continuity
B00799
Air
E
G
B00800
BatteryAir
F
E
± SFI (2JZ±GE)VSV FOR VAPOR PRESSURE SENSOR
SF±57
1523 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. DISCONNECT CHARCOAL CANISTER ASSEMBLY
FROM BODY
Remove the 3 nuts, and disconnect the charcoal canister from
the body.
2. REMOVE VSV
3. INSPECT VSV
(a) Inspect the VSV for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the terminals.
Resistance: 33 ± 39 W at 20°C (68°F)
If there is no continuity, replace the VSV.
(b) Inspect the VSV for ground.
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV.
(c) Inspect the VSV operation.
(1) Check that air flows from ports E to G.
(2) Apply battery positive voltage across the terminals.
(3) Check that air flows from ports E to F.
If operation is not as specified, replace the VSV.
4. REINSTALL VSV
5. REINSTALL CHARCOAL CANISTER ASSEMBLY