Subaru Legacy 2003 Service Manual page 890

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
E: DTC 22 KNOCK SENSOR
• DIAGNOSIS:
• The knock sensor signal is abnormal.
• The harness connector between ECM and knock sensor is in short or open.
• TROUBLE SYMPTOM:
• Poor driving performance
CAUTION:
After repair or replacement of faulty parts, conduct CLEAR MEMORY and INSPECTION MODES. <Ref.
to EN(H4SOw/oOBD)-28, OPERATION, Clear Memory Mode.> and <Ref. to EN(H4SOw/oOBD)-26, OP-
ERATION, Inspection Mode.>
• WIRING DIAGRAM:
KNOCK
SENSOR
E14
E2
B21
B83
B136 ECM
EN(H4SOw/oOBD)-71
ENGINE (DIAGNOSTICS)
E14
1 2
B21
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
17 18 19 20
B83
1 2 3 4 5 6 7 8 9 10 11 12
B136
1 2 3 5 6 7
4
8
9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
EN-01053