LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 1995 >> Pickup Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.4L >> Diagnostic Testing >> Code 52 - Knock Sensor Circuit >> Diagnosis & Repair
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis & Repair

  1. Ensure ignition is off. Access ECM behind right kick panel. Disconnect ECM connectors. Using ohmmeter, measure resistance between terminal KNK and ground. If resistance is infinite, go to next step. If resistance is NOT infinite, go to step 3).
  2. Disconnect knock sensor harness connector. Measure resistance between sensor terminal and sensor housing. If resistance is infinite, go to next step. If resistance is NOT infinite, replace sensor.
  3. Inspect circuit between knock sensor and ECM for open or short. Repair as needed. If circuit is okay, substitute knock sensor with known good sensor and retest. If Code 52 is still present, replace ECM and retest. If code is no longer present, replace sensor.
scientia non olet · About LEMON Manuals