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Home >> Subaru >> 2001 >> Outback Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - 2.2L & 2.5L >> Diagnostic Tests >> DTC P0327: Knock Sensor (KS) Circuit Low Input - Legacy & Outback 2.5L A/T

DTC P0327: Knock Sensor (KS) Circuit Low Input - Legacy & Outback 2.5L A/T

  1. Perform basic diagnostic procedure. See BASIC DIAGNOSTIC PROCEDURE . Turn ignition off. Disconnect ECM connector B136 (30-pin connector). Using an ohmmeter, measure resistance between ground and ECM connector B136 (30-pin connector) terminal No. 4. See Figure. If resistance is more than 700 k/ohms, go to next step. If resistance is not more than 700 k/ohms, locate and repair open circuit in wiring and check for poor terminal contact in connectors between KS and ECM. See WIRING DIAGRAMS article.
  2. Turn ignition off. Reconnect ECM connector. Disconnect electrical connector from KS. Using an ohmmeter, measure resistance between ground and KS harness terminal No. 2. See Figure. If resistance is more than 700 k/ohms, go to next step. If resistance is not more than 700 k/ohms, locate and repair open circuit in wiring and check for poor terminal contact in connectors between KS and ECM. See WIRING DIAGRAMS article.
  3. Check KS installation bolt for tightness. If bolt is tight, replace KS. If bolt is not tight, tighten bolt. Clear memory and perform verification procedure. See CLEARING DIAGNOSTIC TROUBLE CODES  and VERIFICATION PROCEDURE  .
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