Subaru Legacy 2004 Service Manual page 517

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
8 CHECK HARNESS BETWEEN ECM AND
MANIFOLD ABSOLUTE PRESSURE SEN-
SOR CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Measure the resistance of harness
between ECM and manifold absolute pressure
sensor connector.
Connector & terminal
(B136) No. 18 — (E21) No. 1:
9 CHECK POOR CONTACT.
Check poor contact in manifold absolute pres-
sure sensor connector.
Check
Is the resistance less than 1
&?
Is there poor contact in mani-
fold absolute pressure sensor
connector?
EN(H4SO 2.0)(diag)-85
ENGINE (DIAGNOSTICS)
Yes
Go to step 9. Repair the open
circuit in harness
between ECM and
manifold absolute
pressure sensor
connector.
Repair the poor Replace the mani-
contact in mani- fold absolute pres-
fold absolute pres- sure sensor. <Ref.
sure sensor to FU(H4SO 2.0)-
connector. 26, Manifold Abso-
lute Pressure Sen-
sor.>
No