Subaru Legacy 2005 Service Manual page 4103

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK IGNITION SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the ECM harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
2.0 L turbo model, 3.0 L model, 2.5 L EC,
K4 and EK model:
(B137) No. 14 (+) — Chassis ground (
2.0 L non-turbo model, 2.5 L KS, KA mod-
el:
(B135) No. 13 (+) — Chassis ground (
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Check
Is the voltage more than 10 V? Check poor con-
−
):
−
):
CC(diag)-31
Yes
• Check fuse No.
tact in ECM con- 12 (in fuse & relay
nector. box).
• Check the har-
ness for open or
short circuit
between ignition
switch and ECM.
No