Avalon, Camry, Camry Solara, Highlander, Sienna, Tacoma, Tundra 3.4L V6 & 4Runner
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- Knock sensors No. 1 and 2 are located below intake manifold on cylinder block. See Fig 1 and Fig 2 . Manufacturer lists testing procedure with knock sensor removed from cylinder block before testing. Remove knock sensor. See KNOCK SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article.
- Using ohmmeter, check that no continuity exists between electrical terminal on knock sensor and body of knock sensor. Replace knock sensor if continuity exists.
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