Using a high impedence, digitial ohmmeter, check the resistence of the sensor across the sensor terminals. The resistence should measure 3400-1600 ohms at 70-100degr Far, with the resistence below 1000 ohms, if the engine is warm. If the resistence is out of range, replace the sensor. Using the ohmmeter, connect one lead to the sensor connector terminal, and the other lead to the sensor wiring harness connector terminals 15 and 32. If there is an indication of an open circuit, repair the wiring harness.
Tuesday, March 16th, 2010 AT 10:30 AM