fuel pressure TOYOTA SIENNA 2007 Service Manual PDF

2GR-FE FUEL – FUEL PUMPFU–33
FU
9. REMOVE FUEL PUMP HARNESS
(a) Remove the fuel pump harness from the No. 1 fuel
tube joint.
10. REMOVE FUEL PRESSURE REGULATOR
ASSEMBLY
(a) Remove the clip.
(b) Pull out the fuel pressure regulator from the fuel
suction plate.
(c) Remove the 2 O-rings from the fuel pressure
regulator.
INSPECTION
1. INSPECT FUEL PUMP
(a) Inspect fuel pump resistance.
(1) Using an ohmmeter, measure the resistance
between the terminals.
Standard resistance
(b) Inspect fuel pump operation
(1) Apply battery voltage to both the terminals.
Check that the pump operates.
NOTICE:
• These tests must be done quickly (within
10 seconds) to prevent damage to the
pump.
• Keep fuel pump as far away from the
battery as possible.
• Always do the switching at the battery
side.
REASSEMBLY
1. INSTALL FUEL PRESSURE REGULATOR ASSEMBLY
(a) Apply a light coat of gasoline or spindle oil to the 2
new O-rings, and install it to the fuel pressure
regulator.
(b) Apply a light coat of gasoline or spindle oil to the 2
O-rings again, and install the fuel pressure regulator
to the No. 1 fuel tube joint.
(c) Install the clip.
2. INSTALL FUEL PUMP HARNESS
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Tester Connection Condition Specified Condition
1 - 2 always0.2 to 3.0

at 20
C (68F)
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2GR-FE FUEL – FUEL PUMPFU–33
FU
9. REMOVE FUEL PUMP HARNESS
(a) Remove the fuel pump harness from the No. 1 fuel
tube joint.
10. REMOVE FUEL PRESSURE REGULATOR
ASSEMBLY
(a) Remove the clip.
(b) Pull out the fuel pressure regulator from the fuel
suction plate.
(c) Remove the 2 O-rings from the fuel pressure
regulator.
INSPECTION
1. INSPECT FUEL PUMP
(a) Inspect fuel pump resistance.
(1) Using an ohmmeter, measure the resistance
between the terminals.
Standard resistance
(b) Inspect fuel pump operation
(1) Apply battery voltage to both the terminals.
Check that the pump operates.
NOTICE:
• These tests must be done quickly (within
10 seconds) to prevent damage to the
pump.
• Keep fuel pump as far away from the
battery as possible.
• Always do the switching at the battery
side.
REASSEMBLY
1. INSTALL FUEL PRESSURE REGULATOR ASSEMBLY
(a) Apply a light coat of gasoline or spindle oil to the 2
new O-rings, and install it to the fuel pressure
regulator.
(b) Apply a light coat of gasoline or spindle oil to the 2
O-rings again, and install the fuel pressure regulator
to the No. 1 fuel tube joint.
(c) Install the clip.
2. INSTALL FUEL PUMP HARNESS
A079773E01
A079774E04
A032859E01
Tester Connection Condition Specified Condition
1 - 2 always0.2 to 3.0

at 20
C (68F)
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2GR-FE FUEL – FUEL TANKFU–41
FU
REMOVAL
1. DISCHARGE FUEL SYSTEM PRESSURE
(See page FU-1)
2. REMOVE CHARCOAL CANISTER PROTECTOR (See
page FU-30)
3. REMOVE REAR FLOOR NO. 2 CROSSMEMBER
BRACE LH
(a) Remove the 2 bolts and the rear floor No. 2
crossmember brace LH.
4. REMOVE FUEL TANK FILLER HOSE COVER
(a) Remove the 3 bolts and the fuel tank filler hose
cover.
5. REMOVE FUEL TANK ASSEMBLY
(a) Disconnect the fuel tank vent hose.
(1) Deeply push the connector to release the
locking tab.
(2) Pinch portion A.
(3) Pull out the connector.
(b) Disconnect the fuel tank main tube sub-assembly.
(1) Pinch the tube connector and then pull out the
fuel tank main tube sub-assembly.
NOTICE:
• Check if there is any dirt or mud around
the connector before this operation and
remove the dirt as necessary.
• Be careful of mud because the quick
connector has an O-ring which seals the
pipe and connector that can be
contaminated.
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2GR-FE FUEL – FUEL TANKFU–41
FU
REMOVAL
1. DISCHARGE FUEL SYSTEM PRESSURE
(See page FU-1)
2. REMOVE CHARCOAL CANISTER PROTECTOR (See
page FU-30)
3. REMOVE REAR FLOOR NO. 2 CROSSMEMBER
BRACE LH
(a) Remove the 2 bolts and the rear floor No. 2
crossmember brace LH.
4. REMOVE FUEL TANK FILLER HOSE COVER
(a) Remove the 3 bolts and the fuel tank filler hose
cover.
5. REMOVE FUEL TANK ASSEMBLY
(a) Disconnect the fuel tank vent hose.
(1) Deeply push the connector to release the
locking tab.
(2) Pinch portion A.
(3) Pull out the connector.
(b) Disconnect the fuel tank main tube sub-assembly.
(1) Pinch the tube connector and then pull out the
fuel tank main tube sub-assembly.
NOTICE:
• Check if there is any dirt or mud around
the connector before this operation and
remove the dirt as necessary.
• Be careful of mud because the quick
connector has an O-ring which seals the
pipe and connector that can be
contaminated.
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EC–102GR-FE EMISSION CONTROL – CANISTER
EC
(3) Connect the positive (+) lead to terminal 7 and
the negative (-) lead to terminal 6.
(4) Check that the valve is closed.
If the result is not as specified, replace the
charcoal canister assembly.
(5) Install the detection pump.
INSTALLATION
1. INSTALL CHARCOAL CANISTER ASSEMBLY
(a) Install the 3 bolts and charcoal canister.
Torque: 29 N*m (296 kgf*cm, 21 ft.*lbf)
(b) Connect the purge line hose to the charcoal
canister.
(c) Connect the wire harness clamp.
(d) Connect the vapor pressure sensor connector.
(e) Connect the charcoal canister filter sub-assembly to
the charcoal canister.
(f) Connect the fuel tank vent hose to the charcoal
canister.
2. INSTALL CHARCOAL CANISTER PROTECTOR
(a) Install the 6 bolts and charcoal canister protector.
Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf)
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2GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEMEC–5
EC
ON-VEHICLE INSPECTION
1. INSPECT FUEL CUT RPM
(a) Increase the engine speed to at least 3500 rpm.
(b) Use a sound scope to check for injector operating
sounds.
(c) Check that when the throttle lever is released,
injector operating sounds stop momentarily (at 2500
rpm) and then resume (at 1400 rpm).
Standard
2. CHECK AIR TIGHTNESS IN FUEL TANK AND FILLER
PIPE
(a) Disconnect the vent line hose from the fuel tank.
(b) Connect the pressure gauge to the fuel tank.
(c) Apply pressure to the fuel tank to create an internal
pressure of 4 kPa (41 gf/cm
2, 0.58 psi).
(d) Check that the internal pressure of the fuel tank is
maintained for 1 minute.
(e) Check the connected portions of each hose and
pipe.
(f) Check the installed parts on the fuel tank.
If any malfunctions, damage or other problems are
found, replace the fuel tank and filler pipe.
(g) Reconnect the vent line hose to the fuel tank.
3. INSPECT FUEL CUT OFF VALVE AND FUEL CHECK
VA LV E
(a) Disconnect the vent line hose from the fuel tank.
(b) Connect the pressure gauge to the fuel tank.
(c) Fill the fuel tank with fuel.
(d) Apply pressure of 4 kPa (41 gf/cm
2, 0.58 psi) to the
vent port of the fuel tank.
HINT:
Check the amount of fuel in the fuel tank. When the
fuel tank is full, the float valve of the fill check valve
is closed and no air can pass through.
(e) Remove the fuel tank cap, and check that the
pressure drops.
If the pressure does not drop, replace the fuel tank
assembly.
(f) Reconnect the vent line hose to the fuel tank.
Item Specified Condition
Fuel cut off rpm 2500 rpm
Fuel return rpm 1400 rpm
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EC–82GR-FE EMISSION CONTROL – CANISTER
EC
REMOVAL
1. REMOVE CHARCOAL CANISTER PROTECTOR
(a) Remove the 6 bolts and charcoal canister protector.
2. REMOVE CHARCOAL CANISTER ASSEMBLY
(a) Disconnect the fuel tank vent hose from the
charcoal canister.
(1) Push the connector deep inside.
(2) Pinch portion A.
(3) Pull out the connector.
(b) Disconnect the charcoal canister filter sub-assembly
from the charcoal canister.
(1) Push the connector deep inside.
(2) Pinch portion A.
(3) Pull out the connector.
(c) Disconnect the vapor pressure sensor connector.
(d) Disconnect the wire harness clamp.
(e) Disconnect the purge line hose from the charcoal
canister.
(f) Remove the 3 bolts and charcoal canister.
INSPECTION
1. INSPECT CHARCOAL CANISTER ASSEMBLY
(a) Visually check the charcoal canister for cracks or
damage.
If cracks or damage are found, replace the charcoal
canister assembly.
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