1996 TOYOTA LAND CRUISER Terminal

SF1ES−01
FI6961
Z11824
SF−40
−
SFI MASS AIR FLOW (MAF) METER
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT MAF METER RESISTANCE
Using an ohmmeter, measure the resistance between terminals
THA and E2.
Between
terminalsResistanceTemperature
THA − E210 − 20 kΩ−20°C (− 4°F)
THA − E24 − 7 kΩ0°C (32° F)
THA − E22 − 3 kΩ20°C (68° F)
THA − E20.9 − 1.3 kΩ40°C (104° F)
THA − E20.4 − 0.7 kΩ60°C (140° F)
THA − E20.2 − 0.4 kΩ80°C (176° F)
If the resistance is not as specified, replace the MAF meter.
2. INSPECT MAF METER OPERATION
(a) Connect the MAF meter connector.
(b) Using a voltmeter, connect the positive (+) tester probe to
terminal VG, and negative ( −) tester probe to terminal E3.
(c) Blow air into the MAF meter, and check that the voltage
fluctuates.
If operation is not as specified, replace the MAF meter.
(d) Disconnect the MAF meter connector.
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SF1EU−01
SF−42
−
SFI THROTTLE BODY
670
Author: Date:
1996 LAND CRUISER (RM451U)
THROTTLE BODY
ON−VEHICLE INSPECTION
1. INSPECT THROTTLE BODY
(a) Check that the throttle linkage moves smoothly.
(b) Check the vacuum at each port.
Start the engine.
Check the vacuum with your finger.
Port nameAt idleAt 3,500 rpm
PNo vacuumVacuum
ENo vacuumVacuum
RNo vacuumVacuum
2. INSPECT THROTTLE POSITION (TP) SENSOR
(a) Disconnect the TP sensor connector.
(b) Apply vacuum to the throttle opener.
(c) Using an ohmmeter, measure the resistance between
each terminal.
Throttle valve
conditionBetween terminalsResistance
Fully closedVTA − E20.2 − 5.7 kΩ
Fully closedIDL − E22.3 kΩ or less
OpenIDL − E2Infinity
Fully openVTA − E22.0 − 10.2 kΩ
−VC − E22.5 − 5.9 kΩ
(d) Reconnect the TP sensor connector.
3. INSPECT AND ADJUST DASHPOT
(a) Allow the engine to warm up to normal operating tempera-
ture.
(b) Check the idle speed.
Idle speed: 650 ± 50 rpm (N position)
(c) Open the throttle valve until the throttle lever separates from the dashpot end.
(d) Release the throttle valve gradually, and check the dash-
pot setting speed when the throttle lever touched the
dashpot end.
Dashpot setting speed: 2,200 ± 300 rpm
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SF1EX−01
SF−46
−
SFI THROTTLE BODY
1996 LAND CRUISER (RM451U)
INSPECTION
1. CLEAN THROTTLE BODY
(a) Using a soft brush and carburetor cleaner, clean the cast parts.
(b) Using compressed air, clean all the passages and aper- tures.
NOTICE:
To prevent deterioration, do not clean the throttle position
sensor, dashpot and IAC valve.
2. INSPECT THROTTLE VALVE
(a) Apply vacuum to the throttle opener.
(b) Check that there is no clearance between the throttle stop
screw and throttle lever when the throttle valve is fully
closed.
3. INSPECT THROTTLE POSITION SENSOR
(a) Apply vacuum to the throttle opener.
(b) Insert a 0.50 mm (0.020 in.) or 0.75 mm (0.030 in.) feeler
gauge between the throttle stop screw and stop lever.
(c) Using an ohmmeter, measure the resistance between
each terminal.
Clearance between
lever and stop screwBetween terminalsResistance
0 mm (0 in.)VTA − E20.2 − 5.7 kΩ
0.50 mm (0.020 in.)IDL − E22.3 kΩ or less
0.75 mm (0.030 in.)IDL − E2Infinity
Throttle valve fully
openVTA − E22.0 − 10.2 kΩ
−VC − E22.5 − 5.9 kΩ
4. IF NECESSARY, ADJUST THROTTLE POSITION SEN-
SOR
(a) Loosen the 2 set screws of the sensor.
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−
SFI THROTTLE BODY
SF−47
1996 LAND CRUISER (RM451U)
(b) Apply vacuum to the throttle opener.
(c) Insert a 0.62 mm (0.024 in.) feeler gauge between the
throttle stop screw and stop lever.
(d) Connect the test probe of an ohmmeter to the terminals IDL and E2 of the sensor.
(e) Gradually turn the sensor clockwise until the ohmmeter deflects, and secure it with the 2 set screws.
(f) Recheck the continuity between terminals IDL and E2.
Clearance between
lever and stop screwContinuity (IDL − E2)
0.50 mm (0.020 in.)Continuity
0.75 mm (0.030 in.)No continuity
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SF1EZ−01
−
SFI IDLE AIR CONTROL (IAC) VALVE
SF−49
677
Author: Date:
1996 LAND CRUISER (RM451U)
IDLE AIR CONTROL (IAC) VALVE
ON−VEHICLE INSPECTION
1. INSPECT IAC VALVE FOR OPERATING SOUND
Check that there is a clicking sound immediately after stopping
the engine.
If the operation is not as specified, check the IAC valve, wiring
and ECM.
2. INSPECT IAC VALVE RESISTANCE
(a) Disconnect the IAC valve connector.
(b) Using an ohmmeter, measure the resistance between the
terminals (B1 −S1 and S3, B2−S2 and S4).
Resistance:
At Cold: −10 − 50°C (−50 − 122°F): 15 − 25 Ω
At Hot: 50 −100°C (122 − 212° F): 20 − 30 Ω
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
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SF1F2−01
SF−52
−
SFI IDLE AIR CONTROL (IAC) VALVE
1996 LAND CRUISER (RM451U)
INSPECTION
INSPECT IDLE AIR CONTROL VALVE OPERATION
(a) Apply battery voltage to terminals B1 and B2, and while repeatedly grounding S1 −S2−S3−S4−S1 in sequence,
and check that the valve moves toward the closed posi-
tion.
(b) Apply battery voltage to terminals B1 and B2, and while repeatedly grounding S4 −S3−S2−S1−S4 in sequence,
and check that the valve moves toward the open position.
If operation is not as specified, replace the IAC valve.
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SF06G−11
P05668
OhmmeterContinuity
No Continuity Ohmmeter
1
2
43
P05667
Ohmmeter Continuity
Battery
1
2
4 3
SF−54
−
SFI EFI MAIN RELAY
682
Author: Date:
1996 LAND CRUISER (RM451U)
EFI MAIN RELAY
INSPECTION
1. REMOVE EFI MAIN RELAY
LOCATION: In the engine compartment relay box.
2. INSPECT EFI MAIN RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 3.
(b) Check that there is no continuity between terminals 2 and
4.
If continuity is not as specified, replace the relay.
3. INSPECT EFI MAIN RELAY OPERATION
(a) Apply battery voltage across terminals 1 and 3.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals 2 and 4.
If operation is not as specified, replace the relay.
4. REINSTALL EFI MAIN RELAY
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SF1F5−01
P05668
OhmmeterContinuity
Ohmmeter
No Continuity
1
2
43
P05667
Ohmmeter 1
2
3
4 Battery
SF−56
−
SFI CIRCUIT OPENING RELAY
1996 LAND CRUISER (RM451U)
INSPECTION
1. REMOVE CIRCUIT OPENING RELAY
2. INSPECT CIRCUIT OPENING RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be- tween terminals 1 and 3.
(b) Check that there is no continuity between terminals 2 and
4.
If continuity is not as specified, replace the relay.
3. INSPECT CIRCUIT OPENING RELAY OPERATION
(a) Apply battery voltage across terminals 1 and 3.
(b) Using an ohmmeter, check that there is continuity be- tween terminals 2 and 4.
If operation is not as specified, replace the relay.
4. REINSTALL CIRCUIT OPENING RELAY
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