Subaru FORESTER 2001 Service Manual page 188

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
No.
1 CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM
CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from crankshaft posi-
tion sensor.
3) Measure resistance of harness between
crankshaft position sensor connector and
engine ground.
Connector & terminal
(E10) No. 1 — Engine ground:
2 CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM
CONNECTOR.
Measure resistance of harness between
crankshaft position sensor connector and
engine ground.
Connector & terminal
(E10) No. 1 — Engine ground:
3 CHECK HARNESS BETWEEN CRANK-
SHAFT POSITION SENSOR AND ECM
CONNECTOR.
Measure resistance of harness between
crankshaft position sensor connector and
engine ground.
Connector & terminal
(E10) No. 2 — Engine ground:
4 CHECK CONDITION OF CRANKSHAFT
POSITION SENSOR.
5 CHECK CRANKSHAFT POSITION SENSOR.
1) Remove crankshaft position sensor.
2) Measure resistance between connector
terminals of crankshaft position sensor.
Terminals
No. 1 — No. 2:
Step
Is the resistance more than
100 kΩ?
Is the resistance less than
10 Ω?
Is the resistance less than
5 Ω?
Is the crankshaft position
sensor installation bolt
tightened securely?
Is the resistance between 1
and 4 kΩ?
EN(DOHC TURBO)-187
Check Yes
Repair harness
and connector.
NOTE:
In this case,
repair the follow-
ing:
¼ Open circuit in
harness between
crankshaft posi-
tion sensor and
ECM connector
¼ Poor contact in
ECM connector
¼ Poor contact in
coupling connec-
tor
Repair ground
short circuit in
harness between
crankshaft posi-
tion sensor and
ECM connector.
NOTE:
The harness
between both
connectors are
shielded. Repair
ground short cir-
cuit in harness
together with
shield.
Go to step 4.
Go to step 5.
Repair poor con-
tact in crankshaft
position sensor
connector.
Engine (Diagnostics)
No
Go to step 2.
Go to step 3.
Repair harness
and connector.
NOTE:
In this case,
repair the follow-
ing:
¼ Open circuit in
harness between
crankshaft posi-
tion sensor and
ECM connector
¼ Poor contact in
ECM connector
¼ Poor contact in
coupling connec-
tor
Tighten crankshaft
position sensor
installation bolt
securely.
Replace crank-
shaft position sen-
sor. <Ref. to
FU(DOHC
TURBO)-30,
Crankshaft Posi-
tion Sensor.>