2001 TOYOTA SEQUOIA fuel pressure

D13872
Hand±Held Tester
DLC3
CAN VIM
B16500
Fuel Return Hose
Pinch
SF±6
± SFISFI SYSTEM
2740 Author: Date:
2005 SEQUOIA (RM1146U)
(j) Check that there is any fuel leak after maintenance any-
where on the fuel system.
(1) Connect a hand±held tester to the Controller Area
Network Vehicle Interface Module (CAN VIM). Then
connect the CAN VIM to the Date Link Connector 3
(DLC3).
(2) Turn the ignition switch ON and push the hand±held
tester main switch ON.
NOTICE:
Do not start the engine.
(3) Enter the following menus: DIAGNOSIS / EN-
HANCED OBDII / ACTIVE TEST / FUEL PUMP /
SPD.
(4) Please refer to the hand±held tester operator's
manual for further details.
(5) Pinch the fuel return hose.
The pressure in the high pressure line will rise to
approx. 392 kPa (4 kgf/cm
2, 57 psi). In this state,
check to see that there are no leaks from any part
of the fuel system.
NOTICE:
Always pinch the hose. Avoid bending as it may cause the
hose to crack.
(6) Turn the ignition switch OFF.
(7) Disconnect the hand±held tester and CAN VIM
from the DLC3.

D13872
Hand±Held Tester
DLC3
CAN VIM
SF12Y±05
B16497
Up
Pulsation
DamperScrew
B16528
SST
(Gauge)
Front
Fuel
Pipe
Gasket SST
(Union)SST
(Adaptor)
± SFIFUEL PUMP
SF±7
2741 Author: Date:
2005 SEQUOIA (RM1146U)
FUEL PUMP
ON±VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Connect a hand±held tester to the Controller Area Net-
work Vehicle Interface Module (CAN VIM). Then connect
the CAN VIM to the Date Link Connector 3 (DLC3).
(b) Turn the ignition switch ON, and push the hand±held tes-
ter main switch ON.
NOTICE:
Do not start the engine.
(c) Enter the following menus: DIAGNOSIS / ENHANCED
OBDII / ACTIVE TEST / FUEL PUMP / SPD
(d) Please refer to the hand±held tester operator's manual
for further details.
(e) Check that the pulsation damper screw rises when the
fuel pump operates.
If operation is not as specified, check the fusible link, fuses, EFI
main relay, fuel pump, ECM and wiring connections.
(f) Turn the ignition switch off.
(g) Disconnect the hand±held tester and CAN VIM from the
DLC3.
2. CHECK FUEL PRESSURE
(a) Check the battery positive voltage is 12 V or more.
(b) Disconnect the negative (±) terminal cable from the bat-
tery.
(c) Remove the front fuel pipe from the LH delivery pipe. (See
page SF±27)
(d) Install the front fuel pipe and SST (pressure gauge) to the
delivery pipe with the 3 lower gaskets and SST (adaptor).
SST 09268±45014 (09268±41190, 90405±06167)
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
(e) Wipe off any splattered gasoline.
(f) Reconnect the negative (±) terminal cable to the battery.
(g) Connect a hand±held tester to the DLC3. (See step 1 in
check fuel pump operation (a) to (e))

SF±8
± SFIFUEL PUMP
2742 Author: Date:
2005 SEQUOIA (RM1146U)
(h) Measure the fuel pressure.
Fuel pressure:
265 to 304 kPa (2.7 to 3.1 kgf/cm
2, 38 to 44 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the fuel hoses and connections, fuel
pump, fuel filter and fuel pressure regulator.
(i) Disconnect the hand±held tester and CAN VIM from the
DLC3.
(j) Start the engine.
(k) Measure the fuel pressure at idle.
Fuel pressure:
265 to 304 kPa (2.7 to 3.1 kgf/cm
2, 38 to 44 psi)
(l) Stop the engine.
(m) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/cm
2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure
regulator and/or injectors.
(n) After checking fuel pressure, disconnect the negative (±)
terminal cable from the battery and carefully remove the
SST to prevent gasoline from splashing.
SST 09268±45014
(o) Reinstall the front fuel pipe to the LH delivery pipe. (See
page SF±31)
3. CONNECT CABLE TO NEGATIVE BATTERY TERMI-
NAL
4. PERFORM INITIALIZATION (See page IN±20)
Some systems need initialization when disconnecting the cable
from the negative battery terminal.
5. CHECK FOR FUEL LEAKS (See page SF±1)

SF0XZ±14
B17758
Vacuum Hose
Fuel Pressure Regulator
N´m (kgf´cm, ft´lbf)

Non±reusable part: Specified torque
O±RingFuel Return Hose
7.5 (80, 66 in.´lbf)
± SFIFUEL PRESSURE REGULATOR
SF±21
2755 Author: Date:
2005 SEQUOIA (RM1146U)
FUEL PRESSURE REGULATOR
COMPONENTS

B07053
Vacuum Hose
Fuel Return Hose
SF0Y0±10
B17759
SF±22
± SFIFUEL PRESSURE REGULATOR
2756 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
REMOVE FUEL PRESSURE REGULATOR
(a) Disconnect the vacuum hose from intake air resonator.
(b) Disconnect the fuel return hose from the pressure regula-
tor.
CAUTION:
Put a shop towel under the pressure regulator.
(c) Remove the 2 bolts, and pull out the pressure regulator.
(d) Remove the O±ring from the pressure regulator.

B17760
Install
Turn
SF0Y1±13
B07053
Vacuum Hose
Fuel Return Hose
± SFIFUEL PRESSURE REGULATOR
SF±23
2757 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL FUEL PRESSURE REGULATOR
(a) Apply a light coat of gasoline to a new O±ring, and install
it to the pressure regulator.
(b) While turning the pressure regulator left and right, install
it to the delivery pipe.
(c) Install the pressure regulator with the 2 bolts.
Torque: 7.5 N´m (76 kgf´cm, 66 in.´lbf)
(d) Connect the vacuum hose to intake air resonator.
(e) Connect the fuel return hose to the pressure regulator.
2. CHECK FOR FUEL LEAKS (See page SF±1)

B17460
Engine Wire Clamp
Fuel Pressure
Regulator

Gasket
Upper Gasket

Lower Gasket
RH Delivery Pipe
Front Fuel Pipe

Grommet
Injector

Insulator
Fuel Main Hose
VSV for EVAPFuel Pressure
Pulsation Damper

Gasket

O±Ring
Injector Connector
PCV Hose
N´m (kgf´cm, ft´lbf)

Non±reusable part: Specified torque
* For use with SST

Gasket
39 (400, 29)
39 (400, 29)
Fuel Return Pipe

O±Ring
Fuel Return Hose
Throttle Body
Cover Bracket
VSV Connector for EVAP
EVAP Hose
21 (214, 15 )
21 (214, 15 )
LH Delivery Pipe
7.5 (76, 66 in.´lbf)
18 (184, 13 )
* 33 (340, 24)
39 (400, 29)
7.5 (76, 66 in.´lbf)
SF±26
± SFIINJECTOR
2760 Author: Date:
2005 SEQUOIA (RM1146U)

SF133±08
B07312
B16540
(a)
(b)
Throttle Body Cover Bracket
(c)
B07045ClampClamp
Clamp
± SFIINJECTOR
SF±27
2761 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. DISCHARGE FUEL SYSTEM PRESSURE
(See page SF±1)
2. REMOVE THROTTLE BODY COVER
3. REMOVE INTAKE AIR CONNECTOR
4. REMOVE FUEL PRESSURE PULSATION DAMPER
Remove the pulsation damper, upper gasket, fuel main hose
and lower gasket.
NOTICE:

Put a shop rag under the delivery pipe.

Slowly loosen the pulsation damper.
5. DISCONNECT PCV HOSE FROM PCV VALVE
6. DISCONNECT VSV FOR EVAP
(a) Disconnect the VSV connector for EVAP.
(b) Disconnect the EVAP hose.
(c) Remove the VSV for EVAP from the intake manifold.
7. REMOVE THROTTLE BODY COVER BRACKET
Remove the bolt and throttle body cover bracket.
8. DISCONNECT ENGINE WIRES
(a) Disconnect the engine wire clamps from the No.1 engine
hanger and engine wire bracket.
(b) Disconnect the 2 wire clamps on the engine wire from the
brackets on the RH delivery pipe.
9. REMOVE DELIVERY PIPES AND INJECTORS
NOTICE:

Be careful not to drop the injectors when removing
the delivery pipes.

Do not apply any load to the injector in horizontal
direction.