Subaru LEGACY 2003 Service Manual page 65

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
2 CHECK HARNESS BETWEEN ECM AND IG-
NITION SWITCH CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Turn ignition switch to ST.
4) Measure power supply voltage between
ECM connector and chassis ground.
Connector & terminal
(B135) No. 28 (+) — Chassis ground (–):
Does the measured value exceed the spec-
ified value?
Value
10 V
EN(H4SOw/oOBD)-63
ENGINE (DIAGNOSTICS)
Yes
Repair poor con- Repair open or
tact in ECM con- ground short cir-
nector. cuit in harness
between ECM and
ignition switch
connector.
No