| Circuit Diagram |

Signal Waveform Idle rail pressure regulator waveform
Inspection 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the fuel pressure regulator valve connector.
Replacement 1. Discharge refrigerant from refrigeration system. 2. Replace any faulty tubes or hoses. Cap the open fittings immediately to keep moisture or dirt out of the system. 3. Tighten the bolt or nut joint to the specified torque.
Description The ambient temperature sensor is located inside the side mirror and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature. The sensor output will be used for discharge temperature control, temperature regulation door control,