Diagnostic Tests
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
For Diagnostic Trouble Code (DTC) related circuit testing, see:
- 2002 Model - DTC P0115: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT under DIAGNOSTIC TESTS under SELF DIAGNOSTICS - RX300 article in ENGINE PERFORMANCE.
- 2003 Model - DTC P0115: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT under DIAGNOSTIC TESTS under SELF DIAGNOSTICS article in ENGINE PERFORMANCE.