1996 TOYOTA LAND CRUISER Idle control

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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Brought to you by BirfMark
Version 1.11 - 03/16/2010

SF1F0−01
SF−50
−
SFI IDLE AIR CONTROL (IAC) VALVE
1996 LAND CRUISER (RM451U)
COMPONENTS
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Version 1.11 - 03/16/2010

SF1F1−01
−
SFI IDLE AIR CONTROL (IAC) VALVE
SF−51
1996 LAND CRUISER (RM451U)
REMOVAL
1. REMOVE THROTTLE BODY (See page SF−45)
2. REMOVE IAC VALVE
Remove the 2 screws, IAC valve and O−ring.
HINT:
At the time of installation, install the IAC valve with a new O −
ring.
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Brought to you by BirfMark
Version 1.11 - 03/16/2010

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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Brought to you by BirfMark
Version 1.11 - 03/16/2010

SF1F3−01
−
SFI IDLE AIR CONTROL (IAC) VALVE
SF−53
1996 LAND CRUISER (RM451U)
INSTALLATION
Installation is in the reverse order of removal (See page SF−51 ).
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Brought to you by BirfMark
Version 1.11 - 03/16/2010