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MANUAL A/C DIAGNOSIS TSB Revision HEATER, AIR CONDITIONING AND VENTILATION 55A-35 STEP 5. Check the A/C pressure sensor operation. valve. (2) Disconnect the A/C pressure sensor connector and connect special tool test harness MB991658 as shown in the (3) Turn ON the engine and then turn ON the A/C switch. (4) At this time, check to see that the voltage of A/C pressure sensor terminal No. 2 reflects the specifications of the ± 5%. Q: Is the A/C pressure sensor operating properly? YES : Go to Step 6. STEP 6. Check the refrigerant level. YES : Go to Step 7. Service AC702631AB A/C pressure sensor AC307368 A/C MB991658 AC Harness side AC208297AG Refrigerant pressure MPa (psi) Output voltage (V) 0 1 2 3 5 4 1 (145) 2 (290) 3 (435) |