Codes de défaut couverts
57-02, 57-42, 58-02, 58-42
Pressure transducers are dynamically assigned based on their relative values within PCM software. This feature allows the pressure transducers and harnesses to be interchangeable. Each pressure transducer requires 3 wires: Ground (BLK), Power (+5V DC, RED), and Signal (GRN). The ratio of voltage between power and signal wires is converted into a pressure value. If the signal is above or below the pressure transducers ability to measure it may be because the power wire is not supplying 5V DC or the signal wire is not returning a DC Voltage between 0.5-4.5 VDC. A base code of 57 or 58 is determined based on which PCM connection has the issue, P1 or P2. The expansion codes 02 and 42 explain the type of issue, in this case “shorted”, meaning the signal wire is returning less than 0.5V DC. The most likely cause for this is the sensor wire being shorted to the metal chassis.
Pages de dépannage ACHPVSR454-02SM.