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Home >> Toyota >> 2000 >> ECHO 2D Sedan, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P0325: Knock Sensor Circuit >> Diagnosis & Repair
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Diagnosis & Repair

  1. Access ECM behind glove box. Disconnect ECM harness connector E6. See Figure. Use DVOM, backprobe ECM harness connector and measure resistance between ground and terminal No. 13 (White wire) at ECM harness connector E6. Resistance should be one megohm or more. If resistance is as specified, go to step  3. If resistance is not as specified, go to next step.
  2. Disconnect knock sensor harness connector. Check continuity between knock sensor terminal and knock sensor housing. If continuity does not exist, go to next step. If continuity exists, replace knock sensor.
  3. Check for open or short in wiring between knock sensor and ECM. See WIRING DIAGRAMS article. If problem exists, repair wiring as necessary. If problem does not exist, substitute knock sensor with known-good knock sensor. Clear and then retrieve DTCs. If DTC P0325 is still displayed, replace ECM. If DTC P0325 is no longer displayed, replace knock sensor.
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