Basic Troubleshooting Basic Troubleshooting Guide Customer Problem Analysis Sheet Basic Inspection Procedure Measuring Condition of Electronic Parts' Resistance The resistance measured at high temperature after running the vehicle may be high or low.
OBD-II review 1. Overview The California Air Resources Board (CARB)launched the regulation of OBD (On Board Diagnostics) for vehicles sold in California starting with the 1988 model year.
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Description The A/C Pressure Transducer (APT) converts the pressure value of high-pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it at high speed or low speed.