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Home >> Toyota >> 1995 >> T100 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.4L >> Diagnostic Testing >> Code P0340 - Camshaft Position (CMP) Sensor Circuit >> Diagnosis & Repair
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Diagnosis & Repair

  1. Disconnect CMP sensor harness connector. Harness connector is mounted on front of timing cover on right side of engine. Using ohmmeter, measure resistance between sensor connector terminals. Resistance should be 835-1400 ohms (cold sensor) or 1060-1645 ohms (hot sensor).
  2. Replace sensor as needed. If sensor is okay, inspect circuits between ECM and CMP sensor for open or short. See wiring diagram in the WIRING DIAGRAMS - 3.4L article. Repair as needed. If both circuits are okay, remove sensor and inspect. Also inspect signal plate. Replace as needed. If both components are okay, replace ECM and retest.
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