Subaru LEGACY 2003 Service Manual page 72

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
7 CHECK ENGINE COOLANT TEMPERATURE
SENSOR.
1) Raise temperature up to approx. 90°C
(194°F).
CAUTION:
Be careful not to burn yourself.
2) Measure resistance between engine cool-
ant temperature sensor terminals.
Terminals
No. 1 — No. 2:
Is the measured value within the specified
value?
Step
EN(H4SOw/oOBD)-70
Value
0.2 — 0.3 kΩ
Yes
Replace ECM. Replace engine
coolant tempera-
ture sensor.
No