Subaru LEGACY 2006 Manual page 539

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Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
AX:DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW (BANK 1 OR SINGLE SENSOR)
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of knock sensor.
Judge as NG if it is out of specification.
2. COMPONENT DESCRIPTION
(1)
(2)
(3)
(1) Case
(2) Weight
(3) Piezoelectric element
3. ENABLE CONDITION
Secondary Parameters
None
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criteria below becomes 1 second or
more.
Judgment Value
Malfunction Criteria
Output voltage
Ignition switch
Time Needed for Diagnosis: 1 second
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
(4) (5)
(4) Nut
(5) Resistance
Enable Conditions
Threshold Value
< 0.238 V
ON
GD(H4SO)-102
(A)
EN-01707
(A) To knock sensor harness