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SELECTABLE 4WD SYSTEM
Be careful not
to bend the
connector
terminals
23-6
4.
Front VSS
Line
Short Circuit
Ins
pection
Check the Pink/white wire for
continuity
between
I
~
I
I
m
I
I
~
the ECM 21 P
(Gray) connector
terminal
and
_ . .
ground.
Check the
Pink wire for
continuity between
the
fronl
VSS 3P side (Black) connector
terminal
and
ground.
Is there con tinuity'
YES
_
.
Short circuit in
the Pinklwhite
wire
between
the ECM
connector and
front
VSS
connector.
•
Short circuit in
the Pink
wire
at the
front
VSS.
NO
-
GO
TO STEP 5.
5.
Front VSS Mechanical Inspection
Check the rear VSS for correct installation.
Remove the front VSS
(page 17-14),
and
check
for
any object on
the sensor tip
or
ring gear
sur-
face,
also check
for damage on the sensor
tip.
Is
it
installed
correctly?
NO
- Clean
the front
VSS
and ring
gear, cor-
rectly
install the
front VSS, or replace
the front
VSS.
YES
-
GO
TO
STEP 6.
6.
Failure
Reproduction
P/IN
Interchange
the front
VSS 3P (Black)
and rear
,~~~~:~
VSS 3P (Yellow) connector.
I
Turn the
ignition switch
OFF then ON.
Turn
the
2WD/4WD
select
switch
to 4WD.
Test-drive
the
vehicle
above 4 mph for more
than
30
second
s and check
that the 4WD indica·
tor
blinks.
Does
the
4WD
indicator
blink?
NO
_
.
Check
for poor
contact or
loose
con-
nection
in
wi
re
harness.
•
No problem
(Temporary
failure).
YES
_
.
If the
indicator
blinks
2 times,
recheck
for poor
contact or loose
connection
in
wire
harness.
If
they
are
OK, replace the ECM.
•
If
the
indicator
blinks 3
times, replace
the front VSS.
r
P
.Q
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