Subaru Legacy 2004 Service Manual page 1434

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK HARNESS BETWEEN IGNITION
SWITCH AND ECM.
1) Disconnect the connectors from ECM.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B137) No. 32 (+) — Chassis ground (
Check
Is the voltage more than 10 V? Repair the battery
"
):
EN(H4DOTC)(diag)-145
ENGINE (DIAGNOSTICS)
Yes
Repair the poor
short circuit in har- contact in ECM.
ness between igni-
tion switch and
ECM.
No