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DTC 34: Knock Sensor

  1. Check Input Signal Circuit  - Turn ignition off. Disconnect ECM harness connector and knock sensor harness connector. Verify harness continuity between knock sensor connector terminal "b" (White wire) and ECM terminal No. 27. See Figure , Fig 1 and Fig 2 . If continuity is present, go to next step. If continuity is not present, repair harness or connectors as necessary.
  2. Check Component  - Inspect knock sensor. See I - SYS/COMP TESTS article in the ENGINE PERFORMANCE Section. Replace knock sensor if necessary and perform FINAL CHECK  .
Fig 1: Locating Knock Sensor Harness Connector
G93I78632Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: DTC 34, Checking Input Signal Circuit
G93J78633Courtesy of NISSAN MOTOR CO., U.S.A.