Subaru Legacy 2004 Service Manual page 492

ENGINE (DIAGNOSTICS)
Step
6 CHECK HARNESS BETWEEN ECM AND IG-
NITION COIL & IGNITOR ASSY CONNEC-
TOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Disconnect the connector from ignition coil
& ignitor ASSY.
4) Measure the resistance of harness
between ECM and ignition coil & ignitor ASSY
connector.
Connector & terminal
(B134) No. 23 — (E12) No. 4:
(B134) No. 24 — (E12) No. 2:
7 CHECK HARNESS BETWEEN ECM AND IG-
NITION COIL & IGNITOR ASSY CONNEC-
TOR.
Measure the resistance of harness between
ECM and engine ground.
Connector & terminal:
(B134) No. 23 — Engine ground:
(B134) No. 24 — Engine ground:
8 CHECK POOR CONTACT.
Check poor contact in ECM connector.
Diagnostics for Engine Starting Failure
Is the resistance less than 1
&?
Is the resistance more than 1
M&?
Is there poor contact in ECM
connector?
EN(H4SO 2.0)(diag)-60
Check Yes
Go to step 7.
Go to step 8.
Repair the poor
contact in ECM
connector.
No
Repair the har-
ness and connec-
tor.
NOTE:
In this case, repair
the following:
• Open circuit in
harness between
ECM and ignition
coil & ignitor ASSY
connector
• Poor contact in
coupling connector
Repair the ground
short circuit in har-
ness between
ECM and ignition
coil & ignitor ASSY
connector.
Check the fuel
pump circuit. <Ref.
to EN(H4SO
2.0)(diag)-61,
FUEL PUMP CIR-
CUIT, Diagnostics
for Engine Start-
ing Failure.>