Subaru Forester 2004 Service Manual page 165

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTIC)
Step
5 CHECK HARNESS BETWEEN EXHAUST
TEMPERATURE SENSOR AND ECM CON-
NECTOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance of harness
between exhaust temperature sensor connec-
tor and engine ground.
Connector & terminal
(B279) No. 2 — Engine ground:
Check
Is the resistance less than 5
Ω?
EN(H4DOTC 2.5)-164
Yes
Replace the Repair the harness
exhaust tempera- and connector.
ture sensor. <Ref.
NOTE:
to FU(H4DOTC
In this case repair
2.5)-40, Exhaust
the following:
Temperature Sen-
• Open circuit in
sor.>
harness between
ECM and exhaust
temperature sen-
sor connector
• Poor contact of
exhaust tempera-
ture sensor con-
nector
• Poor contact in
ECM connector.
• Poor contact in
joint connector
No