Subaru Legacy 2004 Service Manual page 910

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AF:DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW INPUT (BANK 1 OR SINGLE
SENSOR)
DTC DETECTING CONDITION:
Immediately at fault recognition.
TROUBLE SYMPTOM:
• Poor driving performance
• Knocking occurs.
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
41, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-34, Inspection Mode.>.
WIRING DIAGRAM:
• EC, EK and K4 model
KNOCK
SENSOR
B136
• KA and KS model
NOTE:
Fuel injection system for KA and KS model is the same as 2.0 L model. Refer to EN(H4SO 2.0) section.
E14
E1
B20
ECM
EN(H4SO 2.5)(diag)-151
17 18 19 20 21
28 29
E
ENGINE (DIAGNOSTICS)
E14
1 2
B20
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
B136
1 2 3 4 5 6
7 8 9 10 11 12 13 14 15 16
22 23 24 25 26 27
30 31 32 33 34 35
EN-01998