MIXTURE RATIO FEEDBACK SYSTEM INSPECTION
SEF707B
START
-
Make sure that the following are normal
engine at idle speed
SEF651B
SEF70BB
een
jumper wire.
connector and ground metal
on vehicle body
Continuity exists
. . .. .. . . 0 K.
Continuity does not exist . . .. N G
4) Check for continuity between terminal @ of 16-pin
SEF706B
t
Verify that diagnosis mode selector is turned fully
cou nterclockwise
1
Run engine at about 2,000 rpm for about 2 minutes under
no-load
I
4
Make sure that inspection lamp (Green) on control unit
aoes
on and off more than 5 times durinq 10 seconds
I i2~000 rom) .. .~,. ~ ~
OK
Disconnect throttle valve switch harness connector
1
I Race engine two or three times under no-load, then run I
I JG
1
SEF709B
EF 81 EC-60
INJECTOR COOLING FAN (VG30ET)
Inspection
START
T
Disconnect water temperature switch harness connector
and connect the terminal to ground with
a jumper wire
I
Turn ignition switch
I OFF+ON+OFF L
1
I
Make sure that cooling fan motor starts to operate 1 NG I IOK I
1
Check harness for continuity ~~
[ Perform
component check
COMPONENT CHECK
A Fan motor
1 Make sure that continuity exists between
terminals of fan motor
SEF734B
2. Apply battery voltage to the terminals of fan
motor. If fan motor
does not operate, replace
SEF7358
EF & EC-70
