Confirm the valve does not adhere

HINT:

Bad returning of the valve by entrance of foreign objects causes subtle pressure leak to the advanced direction. Then, DTC can be detected.

3. THROTTLE BODY ASSY

(a) Check throttle body.

(1) Check that throttle valve shaft is not rickety.

(2) Check that each port is not stopped up.

(3) Check that throttle valve opens and closes smoothly.

(4) Check that there is no clearance between the throttle stop screw and throttle lever at the throttle closed position.

NOTICE:

Do not adjust the throttle stop screw.

4. E.F.I. THROTTLE POSITION SENSOR

(a) Resistance inspection.

(1) Disconnect the throttle position sensor connector.

(2) Using an ohmmeter, measure the resistance between terminals VC and E2.

Resistance: 2.5 to 6.0 kQ

(3) Check the change of resistance between terminals VTA and E2.

Change of resistance:

The resistance value increases in proportion to the throttle lever opening value.

HINT:

Throttle valve

Resistance

Fully close

0.2 to 5.7 kO

Fully open

2.0 to 10.2 kO

-20 0 20 40 60 80 100 4) (32) (80) (104) (140) (176) (212)

-20 0 20 40 60 80 100 4) (32) (80) (104) (140) (176) (212)

5. E.F.I. ENGINE COOLANT TEMPERATURE SENSOR

(a) Resistance inspection.

(1) Using an ohmmeter, measure the resistance between each terminal. Resistance:

At 20oC (68°F) 2.32 - 2.59 kQ At 80°C (176°F) 0.310 - 0.326 kQ NOTICE:

In case of checking the water temperature sensor in the water, be careful not to allow water to go into the terminals, and after checking, wipe out the sensor.

Ohmmeter

Ohmmeter

6. KNOCK CONTROL SENSOR

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

HINT:

If the resistance is not specified, replace the sensor.

7. E.F.I. CIRCUIT OPENING RELAY ASSY

(a) Continuity inspection.

(1) Using an ohmmeter, check that continuity exists between each terminal.

Specified condition:

Between terminals 1 and 2 Continuity

Between terminals 3 and 5 No continuity

(2) Using an ohmmeter, check that continuity exists between terminals 3 and 5 when the battery voltage is applied across terminals 1 and 2.

8. E.F.I ECU RELAY (a) Continuity inspection.

(1) Using an ohmmeter, check that continuity exists between each terminal.

Specified condition:

Between terminals 1 and 2 Continuity

Between terminals 3 and 5 No continuity

(2) Using an ohmmeter, check that continuity exists between terminals 3 and 5 when the battery voltage is applied across terminals 1 and 2.

_EMISSION CONTROL - EMISSION CONTROL SYSTEM_

1204E-01

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