Subaru Legacy 2004 Service Manual page 525

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
5 CHECK HARNESS BETWEEN INTAKE AIR
TEMPERATURE SENSOR AND ECM CON-
NECTOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance of harness
between intake air temperature sensor con-
nector and engine ground.
Connector & terminal
(B136) No. 18 — Engine ground:
Check
Is the resistance less than 5
&?
EN(H4SO 2.0)(diag)-93
ENGINE (DIAGNOSTICS)
Yes
Replace the intake Repair the har-
air temperature ness and connec-
sensor. <Ref. to tor.
FU(H4SO 2.0)-27,
NOTE:
Intake Air Temper-
In this case, repair
ature Sensor.>
the following:
• Open circuit in
harness between
intake air tempera-
ture sensor and
ECM connector
• Poor contact in
intake air tempera-
ture sensor
• Poor contact in
ECM
• Poor contact in
joint connector
No