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Home >> Toyota >> 2004 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0340: Variable Valve Timing (VVT) Sensor Circuit >> Diagnosis & Repair
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Diagnosis & Repair

WARNING: This page is about a different car, the 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect VVT sensor harness connector. Using ohmmeter, measure resistance between sensor connector terminals. Resistance should be 835-1400 ohms at 14-122°F (-10-50°C) or 1060-1645 ohms at 122-212°F (50-100°C). Check resistance at each VVT sensor. Replace sensor(s) as necessary. If sensor(s) is okay, go to next step.
  2. Check for open or short circuit in wiring harness between ECM and VVT sensor. See WIRING DIAGRAMS article. Repair as necessary. If wiring harness is okay, remove and inspect sensor(s). Also, inspect signal plate. Replace as necessary. If both components are okay, replace ECM and retest system.
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