fuel pump TOYOTA CAMRY 2000 Service User Guide

Measure the fuel pressure.
Fuel pressure:
265 ± 304 kPa (2.7 ± 3.1 kgf/cm
, 38 ± 44 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the following parts:
wFuel hoses and connections
wFuel pump
wFuel filter
wFuel pressure regulator (e) Install the fuel inlet hose and SST (pressure gauge) to
the fuel filter outlet with 3 new gaskets and the union
bolt.
SST 09268±45012
Torque: 29 N±m (300 kgf±cm, 22 ft±lbf)
(f) Wipe off any splattered gasoline.
(g) Reconnect the battery negative (±) cable. (c) Put a suitable container or shop towel under the fuel
filter.
(d) Remove the union bolt and 2 gaskets, and disconnect
the fuel inlet hose from the fuel filter outlet.
HINT: Slowly loosen the union bolt.
(h) Using SST, connect terminals +B and FP of the data
link connector 1.
SST 09843±18020
(i) Turn the ignition switch ON.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±179

(q) Stop the engine.
(r) Check that the fuel pressure remains 147 kPa (1.5
kgf/cm
2, 21 psi) or more for 5 minutes after the
engine is turned off.
If pressure is not as specified, check the fuel pump,
pressure regulator and/or injector.
(s) After checking fuel pressure, disconnect the battery
negative (±) cable and carefully remove the SST to
prevent gasoline from splashing.
SST 09268±45012
(t) Connect the fuel inlet hose with 2 new gaskets and
the union bolt.
Torque: 29 N±m (300 kgf±cm. 22 ft±lbf)
(u) Reconnect the cable to the negative (±) terminal of
the battery.
(v) Check for fuel leakage.(o) Reconnect the vacuum sensing hose to the air intake
chamber.
(p) Measure the fuel pressure at idle.
Fuel pressure:
206 ± 255 kPa (2.1 ± 2.6 kgf/cm
, 31 ± 37 psi)
If pressure is not as specified, check the vacuum
sensing hose and fuel pressure regulator.(l) Start the engine.
(m) Disconnect the vacuum sensing hose from the air
intake chamber and plug the air intake chamber
outlet.
(n) Measure the fuel pressure at idle.
Fuel pressure:
265 ± 304 kPa (2.7 ± 3.1 kgf/cm
, 38 ± 44 psi) (k) Remove the SST.
SST 09483±18020
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±180

B. Inspect fuel pump operation
Connect the positive (+) lead from the battery terminal 4 of the
connector, and the negative (±) lead
to terminal 5. Check that the fuel pump operates.
NOTICE:
wThese tests must be performed quickly (within 10
seconds) to prevent the coil from burning out.
wKeep the fuel pump a: far away from the battery as
possible.
wAlways perform switching at the battery side.
If operation is not as specified, replace the fuel pump.
5. RECONNECT FUEL PUMP & SENDER GAUGE
CONNECTOR
6. INSTALL REAR SEAT CUSHION
7. CONNECT NEGATIVE (±) TERMINAL CABLE TO
BATTERY
FUEL PUMP INSPECTION
1. DISCONNECT NEGATIVE (±) TERMINAL CABLE
FROM BATTERY
CAUTION: Work must be started after 90 seconds from
the time the Ignition switch Is turned to the 'LOCK'
position and the negative (±) terminal cable is discon±
nected from the battery.
4. INSPECT FUEL PUMP
A. Inspect fuel pump resistance
Using an ohmmeter, measure the resistance between
terminals 4 and 5.
Resistance (Cold):
0.2±3.0 W
If the resistance is not as specified, replace the fuel
pump. 2. REMOVE REAR SEAT CUSHION
3. DISCONNECT FUEL PUMP & SENDER GAUGE CON±
NECTOR
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±181

1. DISCONNECT NEGATIVE (±) TERMINAL CABLE
FROM BATTERY
CAUTION: Work must be started after 90 seconds from
the time the ignition switch is turned to the ªLOCKº
position and the negative (±) terminal cable is discon±
nected from the battery.
2. REMOVE REAR SEAT CUSHION
FUEL PUMP REMOVAL
CAUTION: Do not smoke or work near an open flame
when working on the fuel pump.
COMPONENTS FOR REMOVAL AND
INSTALLATION
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±182

5. DISCONNECT FUEL PIPE AND HOSE FROM FUEL
PUMP BRACKET
CAUTION: Remove the fuel filter cap to prevent the fuel
from flowing out.
(a) Using SST, disconnect the outlet pipe from the pump bracket.
SST 09631±22020
(b) Disconnect the return hose from the pump bracket. 3. REMOVE FLOOR SERVICE HOLE COVER
(a) Disconnect the fuel pump connector.
(b) Remove the 5 screws and service hole cover.
4. REMOVE FUEL PUMP LEAD WIRE
6. REMOVE FUEL PUMP BRACKET ASSEMBLY FROM
FUEL TANK
(a) Remove the 8 bolts.
(b) Pull out the pump bracket assembly.
(c) Remove the gasket from the pump bracket.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±183

FUEL PUMP DISASSEMBLY
1. REMOVE FUEL PUMP FROM FUEL PUMP BRACKET
(a) Remove the fuel pump lead wire.
(b) Pull off the lower side of the fuel pump from the pump
bracket.
(c) Disconnect the fuel hose from the fuel pump, and
remove the fuel pump.
(d) Remove the rubber cushion from the fuel pump.
2. REMOVE FUEL SENDER GAUGE FROM FUEL PUMP
BRACKET
(a) Disconnect the fuel sender gauge connector.
(b) Remove the 2 screws and sender gauge.
COMPONENTS FOR DISASSEMBLY AND
ASSEMBLY
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±184

FUEL PUMP ASSEMBLY
(See Components for Disassembly and Assembly)
1. INSTALL CONNECTOR
Install the gasket, connector and connector support
with the 2 screws.
2. INSTALL FUEL PUMP FILTER TO FUEL PUMP
Install the pump filter with a new clip.
4. INSTALL FUEL PUMP TO FUEL PUMP BRACKET
(a) Install the rubber cushion to the fuel pump.
(b) Connect the fuel hose to the outlet port of the fuel
pump.
(c) Install the fuel pump by pushing the lower side of the
fuel pump.
(d) Install the fuel pump connector. 3. INSTALL FUEL SENDER GAUGE TO FUEL PUMP
BRACKET
(a) Install the sender gauge with the 2 screws.
(b) Connect the fuel sender gauge connector. 4. REMOVE CONNECTOR
Remove the 2 screws, connector support, connector
and gasket. 3. REMOVE FUEL PUMP FILTER FROM FUEL PUMP
(a) Using a small screwdriver, remove the clip.
(b) Pull out the pump filter.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±185

2. CONNECT FUEL PIPE AND HOSE TO FUEL PUMP
BRACKET
(a) Using SST, connect the outlet pipe to the pump
bracket.
SST 09631±22020
Torque: 28 N±m (285 kgf±cm, 21 ft±lbf)
(b) Connect the return hoses to the pump bracket.
3. CHECK FOR FUEL LEAKAGE
(See page EG1±176)
4. CONNECT FUEL PUMP LEAD WIRE
5. INSTALL FLOOR SERVICE HOLE COVER
(a) Install the service hole cover with the 5 screws.
(b) Connect the fuel pump (with fuel sender gauge)
connector.
FUEL PUMP INSTALLATION
(See Components for Removal and Installation)
1. INSTALL FUEL PUMP BRACKET ASSEMBLY TO
FUEL TANK
(a) Install a new gasket to the pump bracket.
(b) Insert the pump bracket assembly into the fuel tank.
6. INSTALL REAR SEAT CUSHION
7. CONNECT NEGATIVE (±) TERMINAL CABLE TO
BATTERY(c) Install the pump bracket with the 8 screws.
Torque: 3.9 N±m (40 kgf±cm, 35 in.±Ibf)
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±186

Clearance between stop screw and lever
0 mm (0 in.)
0.50 mm (0.020 in.)
0.70 mm (0.028 in.)
Throttle valve fully open
SERVICE SPECIFICATIONS
SERVICE DATA
Resistance
Injection volume
Difference between each cylinder
Fuel leakage
Throttle body fully closed angle
Throttle opener setting speed
VSV for Fuel
pressure
(California
only)
EG R gas
temperature
sensorResistance (+B ± ISCC or ISCO) Throttle
position
sensor Fuel pressure
regulator
A/C idle ±up
valvePower source voltage
Fuel return rpm Fuel pressure
Throttle body
Fuel cut rpm VSV for EG Rat no vacuum
MAP sensor Fuel pump
IAT sensorECT sensor
Resistance Resistance
Resistance
Resistance Resistance
Resistance Resistance IAC valve Injector
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±236

TORQUE SPECIFICATIONS
No.1 air intake chamber stay x Intake manifold
No.1 air intake chamber stay x Cylinder headFuel return pipe x Fuel pressure regulator Fuel pressure regulator x Delivery pipe
Fuel pulsation damper x Delivery pipe
Intake manifold stay x Intake manifold
Intake manifold stay x Cylinder blockFuel line (Flare nut type ± use SST)
Throttle body x Intake manifoldIntake manifold x Cylinder headDelivery pipe x Cylinder head
EGR pipe x Intake manifoldFuel pump side
Others Fuel line (Union bolt type)
Fuel pump x Fuel tankFuel tank band x Body
EGR pipe union nutPart tightened
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±237