Toyota Sequoia (2005). Manual — part 684
B17514
AIP
E2
EC0NY–01
B17665
B17515
1
2
B17516
Air
–
EMISSION CONTROL
SECONDARY AIR INJECTION SYSTEM
EC–17
2725
SECONDARY AIR INJECTION
SYSTEM
ON–VEHICLE INSPECTION
1.
INSPECT PRESSURE SENSOR
(a)
Turn the ignition switch to the ON position.
(b)
Measure the voltage between terminals AIP and E2 of the
ECM connector.
Voltage: 1.0 to 2.2 V
If the voltage is not as specified, replace the pressure sensor.
2.
INSPECT VSV FOR AIR INJECTION SYSTEM
(a)
Disconnect the connector from the VSV.
(b)
Disconnect the 2 vacuum hoses from the VSV.
(c)
Using an ohmmeter, measure the resistance between the
terminals.
Standard:
Tester Connection
Specified Condition
1 – 2
33 to 39
Ω
at 20
°
C (68
°
F)
1 – Body ground
10 M
Ω
or higher
2 – Body ground
10 M
Ω
or higher
If the resistance is not as specified, replace the VSV.
(d)
Check that air does not flow from the port as shown in the
illustration.
If the result is not as specified, replace the VSV.
B17517
Air
B17612
B17613
EC–18
–
EMISSION CONTROL
SECONDARY AIR INJECTION SYSTEM
2726
(e)
Apply positive battery between the terminals, check that
air flows from the ports.
If the result is not as specified, replace the VSV.
(f)
Connect the 2 vacuum hoses to the VSV.
NOTICE:
Be sure to connect the vacuum hoses correctly.
(g)
Connect the connector to the VSV.
(h)
Perform procedures (a) to (g) to the other VSV.
3.
INSPECT NO. 2 AIR SWITCHING VALVE
(a)
Disconnect the vacuum hose from the VSV for the air in-
jection system.
(b)
Apply vacuum (30 kPa (306 gf/cm
2
, 4.35 psi) to vacuum
hose, check that the vacuum does not decrease.
If operation is not as specified, replace the No.2 air switching
valve.
(c)
Release the vacuum, and check that the operation sound
is emited from the No.2 air switching valve.
If operation is not as specified, replace the No.2 air switching
valve.
(d)
Perform procedures (a) to (c) to the other No.2 air seitch-
ing valve.
EC0NZ–01
B17631
Throttle Body Cover
PS Air Hose
Intake Air Connector
Suction Hose
MAF Meter Wire
PCV Hose
Vacuum Hose
Air Injection Control
Driver
N·m (kgf·cm, ft·lbf) : Specified torque
7.5 (76, 66 in.·lbf)
–
EMISSION CONTROL
SECONDARY AIR INJECTION SYSTEM
EC–19
2727
COMPONENTS
B17518
Gasket
Gasket
Air Switching Valve No.2
Air Tube No.3
Air Tube No.3
Gasket
Injection Connector
Engine Wire
VSV Connector
for EVAP
Fuel Return Hose
N·m (kgf·cm, ft·lbf) : Specified torque
Non–reusable part
Gasket
Gasket
Air Pump Assembly
Intake Manifold Assembly
Gasket
Gasket
7.5 (76, 66 in.·lbf)
VSV for Air Injection System
18 (185, 13)
18 (185, 13)
18 (185, 13)
10 (102, 7 )
16 (163, 12)
16 (163, 12)
10 (102, 7 )
10 (102, 7)
EC–20
–
EMISSION CONTROL
SECONDARY AIR INJECTION SYSTEM
2728
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