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23. Check the idle revolution speed.
(1) Connect a tachometer to the terminal of the diagnosis
connector.
(2) Check to see if the fast idle revolution speed is within
the reference value.
Reference Value:
NOTE:
•
The fast idle revolution speed can not be adjusted to
the specification. If the revolution speed will not con-
form to the reference value, perform the inspection of
the auxiliary air system, following the procedure given
below.
(3) Remove the air cleaner case from the throttle body.
(4) Start the engine. Check that there is air continuity at the
auxiliary air port under the following conditions.
q Apply your finger to the auxiliary air valve port.
Ensure that the engine speed drops.
w When the cooling water temperature is above
70°C, apply your finger to the auxiliary air port.
Ensure that the engine speed does not change.
NOTE:
•
If the auxiliary air system exhibits malfunction, replace
the throttle body.
(5) Check to see if the idle revolution speed conforms to
the specification when the engine water temperature is
higher than 80°C.
Specified Value
M/T Vehicle:
A/T Vehicle:
NOTE:
•
If the revolution speed will not conform to the specifica-
tion, check the EFI ECU unit. See page EF–41.
Around 1400 rpm/25°C
800 ± 50 rpm
850 ± 50 rpm
Diagnosis connector
Earth
terminal
From
air cleaner
Auxiliary
air valve
port
Engine coolant
EF–17
Tacho-meter
terminal
JEF00056-00346
Idle adjusting
screw
To
manifold
Throttle valve
Auxiliary
air valve
JEF00057-00347
JEF00058-00348
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