fuel pump TOYOTA CAMRY V20 1986 Service Information

± EFI SYSTEMFuel System (Fuel Pump)FI±69

ON±VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Turn the ignition switch ON.
NOTICE: Do not start the engine.
(b) Using SST, connect terminals +B and FP of the check con-
nector.
SST 09843±18020
(e) Turn the ignition switch OFF.
If there is no pressure, check the following
parts:
wFusible links
wFuses (ER 15 A, IGN 7.5 A)
wER main relay
wFuel pump
wECU
wWiring connections (e) Check that there is pressure in the hose from the fuel
filter.
HINT: At this time, you will hear fuel return noise.
(d) Remove SST.
SST 09843±18020
± EFI SYSTEMFuel System (Fuel Pump)FI±70

(f) Install SST (pressure gauge) to the delivery pipe (3S±
FE) or LH delivery pipe (2VZ±FE) with new two gas-
kets and the union bolt.
SST 09268±45012
Torque: 3S±FE 180 kg±cm (13 ft±Ib, 18 N±m)
2VZ±FE 200 kg±cm (14 ft±lb, 20 N ±m)
(g) Wipe off any splattered gasoline.
(h) Reconnect the battery negative H cable. (c) Disconnect the cold start injector connector.
(d) Put a suitable container or shop towel under the cold
start injector pipe (3S±FE) or tube (2VZ±FE).
(e) Remove the union bolt and two gaskets, and discon-
nect the cold start injector tube from the delivery pipe
(3S±FE) or LH delivery pipe (2VZ±FE).
HINT: Slowly loosen the union bolt. 2. CHECK FUEL PRESSURE
(a) Check the battery voltage is above 12 volts.
(b) Disconnect the cable from the negative (±) terminal of the
battery.
± EFI SYSTEMFuel System (Fuel Pump)FI±71

(j) Turn the ignition switch ON.
(k) Measure the fuel pressure.
Fuel pressure: 2.7 ± 3.1 kg/cm
2
(38 ± 44 pst, 265 ± 304 kPa)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the following parts:
wFuel hoses and connection
wFuel pump
wFuel filter
wFuel pressure regulator
(m) Start the engine. .
(n) Disconnect the vacuum sensing hose from the fuel
pressure regulator, and plug the hose end.
(o) Measure the fuel pressure at idling.
Fuel pressure: 2.7 ± 3.1 kg/cm
2
(38 ± 44 psi, 265 ± 304 kPa) (i) Using SST, connect terminals +B and FP of the check
connector.
SST 09843±18020
(l) Remove SST.
SST 09843±18020
± EFI SYSTEMFuel System (Fuel PumpFI±72

(s) After checking fuel pressure, disconnect the battery
negative (±) cable and carefully remove the SST to
prevent gasoline from splashing.
SST 09268±45012
(t) Install the cold start injector pipe (3S±FE) or tube (2VZ±
FE) with two new gaskets and the. union bolt.
Torque: 3S±FE 180 kg±cm (113 ft±lb, 18 N±m)
2VZ±FE 204 kg±cm (14 ft±Ib, 20 N±m)
(u) Reconnect the cold start injector connector.
(v) Reconnect the cable to the negative (±) terminal of the
battery.
(w) Check for fuel leakage.(p) Reconnect the vacuum sensing hose to the fuel pres-
sure regulator.
(q) Measure the fuel pressure at idling.
Fuel pressure: 2.3 ± 2.6 kg/cm
2
(33 ± 37 psi, 226 ± 265 kPa)
If pressure is not as specified, check the vacuum
sensing hose and fuel pressure regulator.
(r) Stop the engine. Check that the fuel pressure remains
1.5 kg/cm
2 (21 psi, 147 kPa) 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.
± EFI SYSTEMFuel System (Fuel Pump)FI±73

REMOVAL OF FUEL PUMP
CAUTION: Do not smoke or work near an open flame when
working the fuel pump.
1. DISCONNECT CABLE FROM NEGATIVE TERMINAL
OF BATTERY
2. REMOVE FUEL TANK
4. REMOVE FUEL PUMP FROM FUEL PUMP BRACKET
(a) Pull off the lower side of the fuel pump from the bracket.
(b) Remove the two nuts, and disconnect the wires from the fuel
pump.
(c) Disconnect the fuel hose from the fuel pump.3. REMOVE FUEL PUMP BRACKET FROM FUEL TANK
(a) Remove the bolt of the bracket.
(b) Remove the seven screws, pull out the pump bracket.
COMPONENTS (2WD)
± EFI SYSTEMFuel System (Fuel PumpFI±74

4. INSTALL FUEL TANK
When installing the fuel tank, refer to FI±65 for the installation
position of the cushion and the tightening torque.
5. CONNECT CABLE TO NEGATIVE TERMINAL OF
BATTERY 2. INSTALL FUEL PUMP TO FUEL PUMP BRACKET
(a) Connect the fuel hose to the outlet port of the fuel pump.
(b) Connect the wires to the fuel pump with the two nuts.
(e) Push the lower side of the fuel pump, and install the fuel
pump.
3. INSTALL FUEL PUMP BRACKET TO FUEL TANK
(a) Install a new gasket and the pump bracket with the seven
screws.
Torque: 40 kg±cm (35 in.±lb, 3.9 N±m)
(b) Install the bolt of the bracket.
INSTALLATION OF FUEL PUMP
(See page FI±74)
1. INSTALL FUEL PUMP FILTER TO FUEL PUMP
(a) Install the pump filter with a new clip.
(b) Install the rubber cushion.5. REMOVE FUEL PUMP FILTER FROM FUEL PUMP
(a) Remove the rubber cushion.
(b) Using a small screwdriver, remove the clip.
(c) Pull out the pump filter.
± EFI SYSTEMFuel System (Fuel Pump)_FI±75

REMOVAL OF FUEL PUMP
CAUTION: Do not smoke or work near an open flame when
working the fuel pump.
1. DISCONNECT CABLE FROM NEGATIVE TERMINAL
OF BATTERY
2. REMOVE FUEL TANK
4. REMOVE FUEL PUMP±FROM FUEL PUMP BRACKET
(a) Pull off the lower side of the fuel pump from the bracket.
(b) Remove the two nuts, and disconnect the wires from the fuel
pump.
(c) Disconnect the fuel hose from the fuel pump. 3. REMOVE FUEL PUMP BRACKET FROM FUEL TANK
Remove the seven bolts, pull out the pump bracket.
COMPONENTS (4WD)
± EFI SYSTEMFuel System (Fuel Pump)FI±76

2. INSTALL FUEL PUMP TO FUEL PUMP BRACKET
(a) Connect the fuel hose to the outlet port of the fuel pump.
(b) Connect the wires to the fuel pump with the two nuts.
(c) Push the lower side of the fuel pump, and install the fuel
pump.
4. INSTALL FUEL TANK
When installing the fuel tank, refer to FI±65 for the installation
position of the cushion and the tightening torque.
5. CONNECT CABLE TO NEGATIVE TERMINAL OF
BATTERY INSTALLATION OF FUEL PUMP
(See page FI±76)
1. INSTALL FUEL PUMP FILTER TO FUEL PUMP
(a) Install the pump filter with a new clip.
(b) Install the rubber cushion.
3. INSTALL FUEL PUMP BRACKET TO FUEL TANK
Install a new gasket and the pump bracket with the seven
bolts.
Torque: 30 kg±cm (26 in.±lb, 2.9 N±m)
5. REMOVE FUEL PUMP FILTER FROM FUEL PUMP
(a) Remove the rubber cushion.
(b) Using a small screwdriver, remove the clip.
(e) Pull out the pump filter.
± EFI SYSTEMFuel System (Fuel Pump)FI±77

No fuel supply to injector
wNo fuel in tank
wFuel pump no working
wFuel filter clogged
wFuel line clogged or leaking
EFI system problems
Ignition problems
wIgnition coil
wIgniter
wDistributor
Spark plug faulty
High±tension cord disconnected or broken
Vacuum leaks
wPCV line
wEGR line
wIntake manifold
wAir intake chamber
wThrottle body
wISC valve
wBrake booster tine
Pulling in air between air flow meter and
throttle body
Low compression
Spark plug faulty
High±tension cord faulty
Ignition problems
wIgnition coil
wIgniter
wDistributor
Incorrect ignition timing
Vacuum leaks
wPCV line
wEGR line
wIntake manifold
TROUBLESHOOTING
ENGINE OVERHEATING
Inspect coil
Inspect igniter
Inspect distributor
Reset timing
Repair as necessaryInspect plugs
Inspect cords
Repair as necessary Troubleshoot cooling system
Reset timing
Engine will not start/
hard to start
(cranks OK)Cooling system faulty
Incorrect ignition timing
Repair as necessary
Perform spark test Engine will not crank or
cranks slowly
IG±7, 12
IG±8, 12
IG±7, 12
IG±16, 20 Rough idle, stalls or
misses
HARD STARTING
Troubleshoot starting system
Inspect plugs
Inspect cords Troubleshoot EFI system
ROUGH IDLING
Starting system faulty
Check compression Repair as necessary Engine overheats
IG±6, 10
IG±6, 10 IG±6, 10
IG±6, 10 Possible cause
Possible cause Possible cause
Remedy Remedy
Problem
Remedy Problem Problem
IG±5, 9
EM±22Page
Page
Page CO±4
FI±10 ST±2
± ENGINE MECHANICALTroubleshootingEM±6