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Home › Chrysler › 1999 › Sebring JXi › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes - Convertible › Self-Diagnostic Tests › DTC P0325: Knock Sensor Circuit

DTC P0325: Knock Sensor Circuit

NOTE: Test applies only to 2.4L. For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
NOTE: Knock sensor circuit is monitored when engine is running. DTC may be stored in Powertrain Control Module (PCM) when knock sensor circuit voltage becomes less than a specified value at idle or during deceleration in relation to engine RPM, or when knock sensor circuit output voltage is more than 5 volts. Possible causes are: defective knock sensor, or defective connectors or wiring.
  1. Ensure ignition is off. Disconnect connector at knock sensor. Knock sensor is threaded into the cylinder block, directly in front of the starter and contains a 1-pin connector with a Dark Blue/Light Green wire.
  2. Turn ignition on with engine off. Using voltmeter, check voltage at Dark Blue/Light wire on connector for knock sensor. If voltage is 2 volts or less, go to next step. If voltage is more than 2 volts, repair short to voltage on Dark Blue/Light Green wire between knock sensor and PCM. PCM is located at driver's side front corner of engine compartment, just below air cleaner assembly. PerformTEST VER-2A .
  3. Turn ignition off. Disconnect connectors at PCM. PCM is located at driver's side front corner of engine compartment, just below air cleaner assembly. Using ohmmeter, check resistance between ground and Dark Blue/Light Green wire on connector for knock sensor. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on Dark Blue/Light Green wire between PCM and knock sensor. PerformTEST VER-2A .
  4. Using ohmmeter, check resistance between Dark Blue/Light Green wire on connector for knock sensor and PCM connector terminal No. 25 (Dark Blue/Light Green wire). If resistance is less than 5 ohms, replace knock sensor. Perform TEST VER-2A . If resistance is 5 ohms or more, repair open circuit on Dark Blue/Light Green wire between PCM and knock sensor. Perform TEST VER-2A .
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