Subaru 2002 IMPREZA Service Manual page 411

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Check
s
the resistance more than
100 kR?
s
the resistance less than 10
2?
s
the resistance less than 5
2?
Step
CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM CON-
NECTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from crankshaft
position sensor.
3)Measure the resistance of harness between
crankshaft position sensor connector and
engine ground.
Connector & terminal
(E10) No. 1
-
Engine ground:
Yes
Repair harness
and connector.
NOTE:
In this case, repaii
the following:
Open circuit in
harness between
crankshaft posi-
tion sensor and
ECM connector
Poor contact in
ECM connector
Poor contact in
coupling connectoi
Repair ground
short circuit in har-
ness between
crankshaft posi-
tion sensor and
ECM connector.
NOTE:
The harness be-
tween both con-
nectors are
shielded. Repaii
ground short circuii
in harness togeth-
er with shield.
Go to step 4.
CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM CON-
NECTOR.
Measure the resistance of harness between
crankshaft position sensor connector and
engine ground.
Connector & terminal
(€10) No. 1
-
Engine ground:
CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM CON-
NECTOR.
Measure the resistance of harness between
crankshaft position sensor connector and
engine ground.
Connector & terminal
(E10) No. 2
-
Engine ground:
CHECK CONDITION OF CRANKSHAFT PO-
SITION SENSOR.
I
CHECK CRANKSHAFT POSITION SENSOR.
1)Remove the crankshaft position sensor.
2)Measure the resistance between connector
terminals of crankshaft position sensor.
Terminals
NO. 1 -NO. 2:
s the crankshaft position sen-
;or installation bolt tightened
securely?
Go
to step 5.
2nd
4
kR? tact in crankshaft
position sensor
connector.
I
No
30 to step 2.
30 to step
3.
3epair harness
2nd connector.
IOTE:
n this case, repaii
he following:
I
Open circuit in
iarness between
:rankshaft posi-
ion sensor and
ICM connector
1
Poor contact in
ECM connector
1
Poor contact in
:oupling connectoi
righten the crank-
;haft position sen-
;or installation bolt
securely.
3eplace the crank.
;haft position sen-
;or. <Ref. to
U ( D 0 H C
2
ranks haft Posi-
ion Sensor.>
rURBO)-30,
EN(D0HC TURBO)-187