1986 TOYOTA CAMRY V20 sensor

(d) Reconnect the sensor connector.
REMOVAL OF THROTTLE BODY
1. DRAIN ENGINE COOLANT (See page CO±5)
2. (A/T)
DISCONNECT THROTTLE CABLE FROM THROTTLE
LINKAGE
3. DISCONNECT ACCELERATOR CABLE FROM
THROTTLE LINKAGE
4. REMOVE AIR CLEANER CAP, AIR FLOW METER AND
AIR CLEANER HOSE
(a) Disconnect the air flow meter connector.
(b) Disconnect the air hoses.
(c) Loosen the air cleaner hose clamp bolt.
(d) Disconnect the air cleaner cap clips.
(e) Remove the air cleaner cap, air flow meter and air cleaner
hose assembly.
5. DISCONNECT THROTTLE POSITION SENSOR
CONNECTOR
6. REMOVE THROTTLE BODY
(a) Disconnect the following hoses:
wPCV hose
wWater by±pass hoses
wEmission control vacuum hoses
(b) (A/T)
Remove the two bolts and throttle cable bracket.
(c) Remove the four (M/T) or three (A/T) bolts, throttle body
and gasket.
Clearance between
lever and stop screwBetween
terminalsResistance
± EFI SYSTEMAir Induction System (Throttle Body (2VZ±FE))FI±113

INSPECTION OF THROTTLE BODY
1. CLEAN THROTTLE BODY
(a) Using a soft brush and carburetor cleaner, clean the
cast parts.
(b) Using compressed air, clean all the passages and aper-
tures.
NOTICE: To prevent deterioration, do not clean the throttle
position sensor.
(b) Insert a 0.50 mm (0.020 in.) feeler gauge, between the
throttle stop screw and stop lever.
(c) Connect the test probe of an ohmmeter to the terminals
IDL and E2 of the sensor.
(d) Gradually turn the sensor clockwise until the ohmme±
ter deflects, and secure it with the two set screws. 3. INSPECT THROTTLE POSITION SENSOR
(See step 2 on page FI±112)
4. IF NECESSARY, ADJUST THROTTLE POSITION
SENSOR
(a) Loosen the two set screws of the sensor. 2. INSPECT THROTTLE VALVE
Check that there is no clearance between the throttle stop
screw and throttle lever when the throttle valve is fully
closed.
(e) Recheck the continuity between terminals IDL and E2.
Clearance between
lever and stop screwContinuity (IDL±E2)
± EFI SYSTEMAir Induction System (Throttle Body (2VZ±FE))FI±114

(b) (A/T)
Install the throttle cable bracket with the two bolts.
Torque: 130 kg±cm (9 ft±Ib, 13 N±m)
(c) Connect the following hoses:
wPCV hose
wWater by±pass hoses
wEmission control vacuum hoses
2. CONNECT THROTTLE POSITION SENSOR
CONNECTOR
3. INSTALL AIR CLEANER CAP, AIR FLOW METER AND
AIR CLEANER HOSE
(a) Connect the air cleaner hose, and install the air
cleaner cap and air flow meter with the four clips.
(b) Tighten the air cleaner hose clamp bolt.
(c) Connect the air hoses.
(d) Connect the air flow meter connector.
INSTALLATION OF THROTTLE BODY
1. INSTALL THROTTLE BODY
(a) Install a new gasket and the throttle body with the four
(M/T) or three (A/n bolts.
Torque: 130 kg±cm (9 ft±Ib, 13 N±m)
4. CONNECT ACCELERATOR CABLE, AND ADJUST IT
5. (A/T)
CONNECT THROTTLE CABLE, AND ADJUST IT
6. FILL WITH ENGINE COOLANT (See page CO±5)
± EFI SYSTEMAir Induction System (Throttle Body (2VZ±FE))FI±115

INSPECTION OF WATER TEMPERATURE
SENSOR
INSPECT RESISTANCE OF WATER TEMPERATURE
SENSOR
Using an ohmmeter, measure the resistance between the
terminals.
Resistance: Refer to chart
If the resistance is not as specified, replace the sensor.
Water Temperature Sensor
± EFI SYSTEMElectronic Control System (Water Temperature Sensor)FI±125

INSPECTION OF EGR GAS TEMPERATURE
SENSOR
INSPECT EGR GAS TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the terminals.
Resistance:
69.40 ± 88.50 k
at 50° C (11210 F)
11.89 ±14.37 k
at 100° C (212° F)
2.79 ± 3.59 k
at 150° C (302° F)
If the resistance is not as specified, replace the sensor.
EGR Gas Temperature Sensor
(CALIF. only)
± EFI SYSTEMElectronic Control System (EGR Gas Temperature Sensor
(CALIF. only)FI±126

3. INSPECT FUEL PRESSURE VSV
A. Inspect VSV for open circuit.
Using an ohmmeter, check that there is continuity between
terminals.
Resistance (Cold): 33 ± 39

If there is no continuity, replace the VSV.
INSPECTION OF FUEL PRESSURE
CONTROL SYSTEM.
1. INSPECT WATER TEMPERATURE SENSOR
(See page FI±49)
2. INSPECT INTAKE AIR TEMPERATURE SENSOR
(See page FI±37)
B. Inspect VSV for ground.
Using an ohmmeter, check that there is no continuity be-
tween each terminal and body.
If there is continuity, replace the VSV.
Fuel Pressure Control System
± EFI SYSTEMElectronic Control System (Fuel Pressure Control System)FI±127

Main Oxygen Sensor
INSPECTION OF OXYGEN SENSOR
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. INSPECT FEEDBACK VOLTAGE
Connect the positive (+) probe of a voltmeter to terminal VF1
of the check connector, and negative (±) probe to terminal
E1. Perform the test as follows:
Warm up the oxygen sensor with the engine at 2,500
rpm for approx. 90 seconds. And maintain engine at
2,500 rpm.
Normal code, code Nos. Malfunction code(s)
21, 25 and 26 (Ex. code Nos. 21, 25 and 26y Warm up the oxygen sensor with the engine at 2,500
rpm for approx. 90 seconds.
Disconnect terminals TE1 and E1 of the check connector.
And maintain engine speed at 2,500 rpm.Connect terminals TE1 and E1 of the check connector.
And maintain engine speed at 2,500 rpm.
Check the number of times the voltmeter needle
fluctuates in 10 seconds.Check the number of times the voltmeter needle fluctuates in 10 seconds.
Read and record diagnostic codes. (See page FI±25 or 27)Zero again After replacing
the oxygen sensor
Measure voltage between terminals VF 1 and E 1.
Repair the relevant diagnostic code.
CONTINUED ON PAGE FI±30Less than 8 times
Less than 8 timesReplace the ECU.
8 times of more
More than 0 V
8 times or
more
NormalZero
Zero
± EFI SYSTEMElectronic Control System (Main Oxygen Sensor)FI±129

Warm up the oxygen sensor with the engine at 2,500
rpm for approx. 90 seconds. And maintain engine speed at
2,500 rpm.Disconnect the water temp. sensor connector and connect
resistor with a resistance of 4 ± 8 k

or another coded
water temp. sensor.Disconnect terminals TE1 and E1 of the check connector.
And maintain engine at 2,500 rpm.
Measure voltage between terminals VF 1 and El.Rear record diagnostic codes. (See page FI±25 or 27) CONTINUED FROM PAGE FI±129
Malfunction code(s)
(Ex. code Nos. 21, 25 and 26)
Connect terminals TE1 and E1 of the check connector. Measure voltage between terminals VF 1 and E 1 .Measure voltage between terminals VF 1 and El.Normal code, code Nos.
21, 25 and 26 Repair the relevant diagnostic code.
Disconnect the PCV hose.
Replace the oxygen sensor.Repair (Over rich)
Repair (Over lean) More than 0 V
± EFI SYSTEMElectronic Control System (Main Oxygen SensorFI±130