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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MFI) 13A-271 Inspection Procedure 29: A/C Pressure Sensor System OPERATION A power voltage of 5 V is applied to the A/C pres- The sensor signal is inputted to the engine-ECU FUNCTION The A/C pressure sensor detects the A/C refrig- PROBABLE CAUSE Failed A/C pressure sensor Open/short circuit in A/C pressure sensor circuit Failed engine-ECU AK300339 5 V 3 2 1 34 33 32 36 35 37 42 45 31 39 38 46 40 41 43 44 82 78 81 80 89 90 9192 79 87 71 74 73 72 76 75 77 85 88 83 84 86 AB Engine-ECU 81 92 42 A-02 C-116 A/C-ECU 3 G-Y G-R G-R G-R BR BR BR G-Y 17 A-14 1 2 A/C Pressure sensor circuit A/C Pressure sensor 5 4 17 21 C-105 C-104 C-135 C-137 Wire colour code |