Toyota Supra Fuel Pump Relay

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(b) Apply a thin coat of gasoline to the O-rings and install the injectors into the delivery pipe.

Mk2 Celica

2. INSTALL DELIVERY PIPE WITH INJECTORS

(a) Install the six insulators into the injector hole of the intake manifold.

Celica Relais Fuel Pump

(b) Install the injectors together with the delivery pipe to the manifold.

1987 Toyota Supra Fuel Pump Relay

(c) Make sure that the injectors rotate smoothly.

NOTE: If the injectors do not rotate smoothly, the probable cause may be incorrect installation of O-rings. Replace the O-rings.

(d) Install four bolts, torque the bolts. Torque: 140 kg-cm {10 ft-lb, 14 N-m)

Celica Relais Fuel Pump

3. CONNECT AND INSTALL WIRING HARNESS

4. INSTALL N0.1 FUEL PIPE

(a) Finger tighten the pulsation damper and union bolt with new gaskets on the fuel pipe.

(b) Tighten then being careful not to bend the fuel pipe.

5. INSTALL DISTRIBUTOR AND SET TIMING (See page IG-9, 10)

Celica Fuel Tank

6. INSTALL AIR INTAKE CHAMBER

7. CHECK FOR FUEL LEAKAGE

(a) With the ignition switch ON, use a service wire to short both terminals of the fuel pump check connector.

(b) Check for fuel leakage.

(c) Remove the service wire from the fuel pump check connector.

Fuel Tank and Line

Cap-

Fuel Pump

Tank Protector

Inlet Pipe

Rubber Protector

Fuel Sender Gauge

Inlet Pipe

Rubber Protector

Rubber Protector

Fuel Pump

Tank Protector

Mk3 Supra Fuel Sender Gauge

Fuel Sender Gauge

Tank Band

Rubber Protector

Tank Band

I kg-cm (ft-lb, Nm)| : Specified torque ♦ Non-reusable part

FI0W?

How Bleed Split Brakes

PRECAUTIONS

1. Always use new gaskets when replacing the fuel tank or component parts.

2. When re-installing, be sure to include the rubber protectors on the upper surfaces of the fuel tank and tank band.

3. Apply the proper torque to all tightening parts.

INSPECT FUEL LINES AND CONNECTIONS

(a) Inspect the fuel lines for cracks, leakage or connections or deformation.

(b) Inspect the fuel tank vapor vent system hoses and connections for looseness, sharp bends or damage.

(c) Inspect the fuel tank for deformation, cracks, fuel leakage or tank band looseness.

(d) Inspect the inlet pipe for damage or fuel leakage.

09631 22020

(e) Hose and tube connections are as shown in the illustration.

If problem is found, repair or replace the parts as necessary.

SST: 09631-22020

Sst 09631 22020

SST: 09631-22020

AIR INDUCTION SYSTEM Air Flow Meter

Damping Chamber

Return Spring

Air Thermo Sensor

FROM

AIR CLEANER

POTENTIOMETER

TO AIR INTAKE Compensation Plate CHAMBER

CLEANER SIDE

Compensation Plate

Toyota Celica Supra

pass Passage

Measuring Plate pass Passage

Compensation Plate

TO AIR INTAKE Compensation Plate CHAMBER

CLEANER SIDE

1994 Toyota Celica Fuel Inlet Pipe

INTAKE CHAMBER

Measuring Plate

Air By pass Passage g|Qg

Measuring Plate

Measuring Plate

Air By pass Passage g|Qg

INTAKE CHAMBER

Ohmmeter

Ohmmeter

Celica Relais Fuel Pump
Air Flow Meter

ON-VEHICLE INSPECTION

MEASURE RESISTANCE OF AIR FLOW METER

(a) Unplug the wiring connector from the air flow meter.

(b) Using an ohmmeter, measure the resistance between each terminal.

1997 4runner Mass Air Flow Diagram

Bôtween terminals

Resistance

Temperature

Ei - V.

20 - 400 0

Ej - Vc

200 - 400 n

Eî - THA

10 - 20 kO

— 20°C ( -4®F)

4 - 7 kfl

0°C < 32°F)

2 - 3 kfl

20°C < 68°F)

0.9 - 1.3 kO

40°C n04°F)

0.4 - 0.7 kO

60°C (140°F|

E> - Fc

Infinity

If not within specification, replace the air flow meter.

REMOVAL OF AIR FLOW METER

1. DISCONNECT NO. 2 AND NO. 3 AIR CLEANER HOSES

2. DISCONNECT AIR FLOW METER CONNECTOR

3. REMOVE AIR FLOW METER

Remove four nuts and one bolt and air flow meter.

fc e,

e2 vc

ej v$ tha

a °

0aa

Measuring Plate

Celica Supra
fKH51 f I0U9
Dodge Ram 5500 Shift Lock Switch

INSPECTION OF AIR FLOW METER

MEASURE RESISTANCE OF AIR FLOW METER

Using an ohmmeter, measure the resistance between each terminal by moving the measuring plate.

Between terminals

Resistance Q

Measuring plate Opening

Ei - Fc

Infinity

Fully closed

Zero

Other than closed position

E2 - Vs

20 - 400

Fully closed

20 - 1000

Fully closed to fully open position

NOTE: Resistance between Ej and Vs will change in accordance with the measuring plate opening.

INSTALLATION OF AIR FLOW METER

1. INSTALL AIR FLOW METER

Install air flow meter with four nuts and one bolts.

2. CONNECT AIR FLOW METER CONNECTOR

3. INSTALL NO. 2 AND NO. 3 AIR CLEANER HOSES

Idle Speed Control (ISC) Valve

Isc Iac Repair EcuSupra Fuel Pump Relay Loction

CHECK OPERATING SOUND FROM ISC VALVE

Confirm that there is a clicking sound immediately after stopping the engine.

Cut Autumn Roses Back For Winter

REMOVAL OF ISC VALVE

1. DRAIN COOLANT

2. DISCONNECT TWO ISC VALVE CONNECTORS

3. DISCONNECT FOLLOWING HOSES FROM ISC VALVE BODY:

(a) Two water by-pass hoses

4. REMOVE TWO BOLTS AND ISC VALVE BODY

INSPECTION OF ISC VALVE

1. CHECK RESISTANCE OF ISC VALVE

Using an ohmmeter, measure the resistance between terminals Bi — St or S3 and B2 — S2 or S4.

Resistance: Bi - Si or Sa 10 - 30 fl B2 - Si or S* 10 - 30 0

IM41 »C-2 2
1987 Toyota Supra Fuel Pump Relay

2. INSPECT OPERATION OF ISC VALVE

(a) Apply battery voltage to terminals Bi and B? and while repeatedly grounding Si - S* - S3 - S4 - Si in sequence, check that the valve moves toward the closed position.

(b) Apply battery voltage to terminals Bi and B2 and while repeatedly grounding S4 — S3 — S2 — Si — S4 in sequence, check that the valve moves toward the open position.

Isc Valve For Supra

INSTALLATION OF ISC VALVE

1. INSTALL ISC VALVE BODY AND TWO BOLTS

2. CONNECT FOLLOWING HOSES TO ISC VALVE BODY:

(a) Two air hoses

(b) Two water by-pass hoses

Toyota Sst 09842 14010 Efi Harness

3. CONNECT TWO ISC VALVE CONNECTORS

4. FILL WITH COOLANT

INSPECTION OF IDLE SPEED

1. INITIAL CONDITIONS

(a) Air cleaner installed

(b) Normal engine operating temperature

(c) All pipes and hoses of air intake system connected

(d) All accessories switched off

(e) All vacuum lines properly connected (i.e., EGR systems, etc.)

(f) EFI system wiring connectors fully plugged

(g) Ignition timing set correctly

(h) Transmission in N range

2. CHECK IDLE SPEED

(a) Remove the rubber cap from the 4-terminal service connector (yellow) and connect an EFI idle adjusting wiring harness (SST) to it.

SST 09842-14010

(b) Connect positive testing probe to the red wire of the SST and negative testing probe to the black wire.

(c) Warm up the Ox sensor with the engine at 2,500 rpm for about 2 minutes.

Voltmeter

v-J

i—

f

\

or -^/fZ c\

A/C S/W

N range

D range

OFF

650 rpm

600 rpm

ON

900 rpm

750 rpm

(d) Maintain the engine speed at 2,500 rpm.

(e) Check that the needle of the voltmeter fluctuates 8 times or more in 10 seconds.

If not, inspect the EFI system and replace the Oxygen sensor, if necessary.

(f) With the engine idling, check that the idle rpm is standard.

(g) With the engine idling, check that the V* voltage is 2.5 ± 1.25 V. If not, check the intake system for leakage. If no leakage, investigate other areas.

Voltmeter

Supra Vacuum System

Voltmeter

Throttle Body

Throttle Body Diagram Toyota CamryCelica Relais Fuel Pump 5sfe

ON-VEHICLE CHECK

1. CHECK THROTTLE BODY

(a) Check that the throttle linkage moves smoothly.

Celica Relais Fuel Pump 5sfe

(b) Check the vacuum at each port.

• Check the vacuum with your finger.

Part No.

At idling

Other than idling

8

No vacuum

Vacuum

*

No vacuum

Vacuum

1

No vacuum

No vacuum

6

No vacuum

Vacuum

Ohmmeter

M044*

2. CHECK THROTTLE POSITION SENSOR

(a) Check the resistance between the terminals.

• Unplug the connector from the sensor.

• Insert a thickness gauge between the throttle stop screw and stop lever.

• Using an ohmmeter, check the resistance between each terminal.

Thickness Gauge f »04M»

Clearance between lever and stop screw

Between terminals

Resistance

0 mm (0 in.)

VTA - E?

0.2 - 0.8 kfl

0.50 mm (0.0197 in.)

IDL - EJ

0-1000

0.90 mm (0.0354 in.)

IDL - Ej

Infinity

Throttle valve fully opened position

VTA - 62

3.3 - 10 kfl

Vc - E2

Celica Relais Fuel Pump
* 10777

REMOVAL OF THROTTLE BODY

1. REMOVE AIR INTAKE CONNECTOR

2. DRAIN COOLANT FROM THROTTLE BODY

3. DISCONNECT FOLLOWING HOSES:

(b) PCV hose from the throttle body

(c) Label and disconnect emission control hoses

4. DISCONNECT THROTTLE SENSOR CONNECTOR

5. REMOVE THROTTLE BODY

Remove the four bolts and remove the throttle body and gasket.

Toyota Position Jiggle Valve

INSPECTION OF THROTTLE BODY

1. CLEAN THROTTLE BODY BEFORE INSPECTION

(a) Wash and clean the cast parts with a soft brush in carburetor cleaner.

(b) Using compressed air, blow all passages and apertures in the throttle body.

CAUTION: To prevent deterioration, do not clean the throttle position sensor.

Celica Throttle Stop Screw

2. CHECK THROTTLE VALVE

Check that there is no clearance between the throttle stop screw and throttle lever when the throttle valve is fully closed.

Win 1895 Assembly

3. ADJUST THROTTLE POSITION SENSOR

(a) Loosen the two sensor screws.

4runner Tps Adjustment

(b) Connect the ohmmeter to the throttle position sensor terminals IDL and E*.

(c) Insert a thickness gauge (0.50 mm or 0.0197 in.) between the throttle stop screw and lever. Gradually turn the sensor clockwise until the ohm-meter deflects, and secure the sensor with two screws.

(d) Using a thickness gauge, recheck the continuity between terminals IDL and E2.

Clearance between lever and stop screw

Continuity (IDL - E2)

0.50 mm (0.0197 in.)

Continuity

0.90 mm (0.0354 in.)

No continuity

Supra Fuel Pump Relay Loction

REPLACEMENT OF THROTTLE POSITION SENSOR

1. REMOVE THROTTLE POSITION SENSOR

Remove two screws and the sensor from the throttle body.

2. INSTALL THROTTLE POSITION SENSOR

(a) Check that the throttle valve is fully closed.

(b) Place the sensor on the throttle body as shown in the figure.

(c) Turn the sensor clockwise, and temporarily install the two screws.

3. ADJUST THROTTLE POSITION SENSOR

35d Throttle Position Sensor Located
Thickness Gauge
Celica Fuel Injector Location

INSTALLATION OF THROTTLE BODY

1. INSTALL THROTTLE BODY

Place a new gasket and install the throttle body and four bolts.

2. CONNECT THROTTLE SENSOR CONNECTOR

Celica Throttle Body Hoses Diagram

3. CONNECT FOLLOWING HOSES:

(a) Emission control hoses

<b) PCV hose to throttle body

4. INSTALL AIR INTAKE CONNECTOR

5. FILL WITH COOLANT

ELECTRONIC CONTROL SYSTEM Location of Electronic Control Parts

Celica Sensors Coolant

1. Air Fk>w Meier

2. Oxygen Sensor a ECU

4. Throttle Position Sensor

5. Cold Start Injector

6. Fuel Pump

7. Resistor

8. ISC Valve

9. Injector

10. Water Temp. Sensor

11. Cold Start Injector Time Switch

12. Igniter w/lgnition Coil

H0M7

Main Relay

I Fusible Link Ignition Switch *0

No. 1 Main Relay

IGNITION Fuse 7.5A

Fusible Link

No. 2 Main Relay

No. 1 Main Relay

IGNITION Fuse 7.5A

Fusible Link

Resistor

Main Relay

Main Relay

Celica Relais Fuel Pump

No.1 w. Main Relay wow

INSPECTION OF MAIN RELAYS

1. CHECK MAIN RELAYS OPERATION

(a) Turn on the ignition switch.

(t>) At this time an operation noise will occur from the relay.

Supra Mkii Relay

2. MEASURE RESISTANCE OF MAIN RELAYS

{a) Remove the No. 1 main relay from the relay block.

Unplug the connector from the No. 2 main relay, (b) Measure the resistance between each terminal.

Between terminals

Resistance ft

No. 1 Main

1 - 2

40 - 60

Relay

3 — 4

Infinity

No. 2 Main

1 - 2

60 - 120

Relay

3 — 4

Infinity

Circuit Opening Relay

No. 1 Main Relay

IG IG

Fuel Pump

Fuel Pump

Fuel Pump Switch

Air Flow Meter

Circuit

Opening

Relay

Fuel Pump Switch

Air Flow Meter

INSPECTION OF CIRCUIT OPENING RELAY

1. CHECK CIRCUIT OPENING RELAY OPERATION

(a) Remove the left kick panel.

(b) Using a voltmeter, check that the meter indicates voltage at Fp terminal during engine cranking and running.

(c) Stop the engine.

2001 Tacoma Circuit Opening Relay

2. MEASURE RESISTANCE OF CIRCUIT OPENING RELAY

(a) Disconnect the connector.

(b) Measure the resistance between each terminal.

Between terminals

Resistance (ft)

STA - E. IG - Fc + B - FP

17 - 25 88-132 Infinity

Voltmeter

Supra 860 Parts Fuel Solonoid

f 11018

Voltmeter f 11018

Solenoid Resistor

Injectors

Toyota Mr2 Turbo Efi Resistor

Solenoid Resistor

INSPECTION OF SOLENOID RESISTOR

MEASURE RESISTANCE OF SOLENOID RESISTOR

Using an ohmmeter, measure the resistance between +B and other terminals.

Resistance: 2 ft each

Ignition S/W

Solenoid Resistor

Injectors

Start Injector Time Switch

Supra Wiring Diagram
Ohmmeter

INSPECTION OF START INJECTOR TIME SWITCH

MEASURE RESISTANCE OF START INJECTOR TIME SWITCH

(a) Disconnect the connector,

(b) Using an ohmmeter, measure the resistance between each terminal.

Between terminals

Resistance (0)

Coolant temperature

STA - STJ

24 - 40

below 30°C <86°F>

40 - 60

above 40°C <104°F)

STA - Ground

20 - 80

510c Water Temp SensorSupra Water Temp Sender

INSPECTION OF WATER TEMP. SENSOR

MEASURE RESISTANCE OF WATER TEMP. SENSOR

(a) Disconnect the connector.

(b) Using an ohmmeter, measure the resistance between both terminals.

Resistance: Refer to chart.

Oxygen Sensor

INSPECTION OF FEEDBACK VOLTAGE (Vf)

1. Warm up the engine.

2. Connect SST to the engine service connector. SST 09842-14010

3. Connect the voltmeter to the SST.

4. Warm up the Oxygen sensor with the engine at 2,500 rpm for about 2 minutes.

Warm up the Oxygen sensor with the engine at 2.500 rpm for approx. 90 seconds.

Short terminals T and Ei of the service connector. And maintain engine speed at 2,500 rpm.

Replace the ECU

After replacing the oxygen sensor

Check the number of times the voltmeter needle fluctuates in 10 seconds.

Less than 8 times

Warm up the Oxygen sensor with the engine at 2,500 rpm for approx. 90 seconds« and maintain engine at 2,500 rpm.

Check the number of times the voltmeter needle fluctuates in 10 seconds.

Less than 8 times

Unshort terminals T and Ei of the service connector And maintain engine speed at 2,500 rpm.

:

Measure voltage between terminals Vf and Ei.

8 times or more

Normal j

8 times or more

Zero

More than OV

Read and record diagnostic codes

Normal code and code 21

Malfunction code(s) (ex. code 21)

^Repair the relevent diagnostic code^J

Zero

CONTINUED ON PAGE FI-74

CONTINUED FROM PAGE FI-73

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Responses

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