Subaru Legacy 2002 Service Manual page 739

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Engine (Diagnostics)
AZ: DTC P0703 — BRAKE SWITCH INPUT MALFUNCTION —
¼ DTC DETECTING CONDITION:
¼ Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN-45, OPERATION,
Clear Memory Mode.> and Inspection Mode <Ref. to EN-42, OPERATION, Inspection Mode.>.
¼ WIRING DIAGRAM:
No.
1 CHECK OPERATION OF BRAKE LIGHT.
Step
Does brake light come on
when depressing the brake
pedal?
EN-222
Check Yes
Go to step 2.
S078521B64
B2M4762
No
Repair or replace
brake light circuit.