4) Using couplers of the same shape as that
mentioned in step 3) or
1P
couplers, connect
only mixture control solenoid valve wire
terminals (Yellow/Black terminal of coupler
@
and Black/White terminal of coupler
0,
White terminal of coupler
@
and Blue/Red
terminal of coupler
0.
NOTE:
l Couplers must be used to connect each
terminal.
l
Use special care when connecting terminals
as wrong connection may cause damage to
other parts.
9
1. Coupler of MCSV side
7. 1 p coupler
2. Coupler of wire harness side
8. 5p coupler (when using this
3. Yellow/Black wire terminal
coupler, leave positions
4. Black/White wire terminal
indicated as 9 in figure
,5.
White wire terminal
blank).
6. Blue/Red wire terminal
9. Blank
Fig. 5-3-27
5) Remove cap of duty check coupler located
on dash panel and connect terminals with a
lead wire to short them.
6) Turn ignition switch “ON” and “OFF”
repeatedly (without starting engine) and
check if MCSV. operating sound is heard as
ignition switch is operated.
Operating sounds prove its proper operation.
Fig. 5-3-29
7) Upon completion of checks, re-connect
disconnected couplers to original positions
securely.
Checking thermal switch
NOTE:
For the rough check of the operation, thermal
switch can be checked by warming up (above
46.5”C,
116°F) or cooling down (below
3O”C,
86°F) the engine without being removed from
the intake manifold.
The check procedure is the same as the follow-
ing except item
11,
21,
5)
and
6).
1) Drain cooling system.
2) Remove thermal switch from intake mani-
fold.
3) Cool switch to below 30°C (86” F), and using
an ohmmeter, check that there is continuity
between terminals.
Fig. 5-3-28
1. Duty check coupler
2. Lead wire
5-26
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