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ECH-226 < DTC/CIRCUIT DIAGNOSIS > [HRA2DDT] P0530 REFRIGERANT PRESSURE SENSOR Is the inspection result normal? YES >> GO TO 5. NO >> GO TO 6. 5. CHECK REFRIGERANT PRESSURE SENSOR SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec- 4. Also check harness for short to ground and to power. Is the inspection result normal? YES >> Replace refrigerant pressure sensor. NO >> Repair or replace error-detected parts. 6. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY-2 Check the voltage between refrigerant pressure sensor harness connector and ground. Is the inspection result normal? YES >> GO TO 7. NO >> GO TO 8. 7. CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec- 4. Also check harness for short to power. Is the inspection result normal? YES >> Check the intermittent incident. Refer to GI-41, "Intermittent Incident" . NO >> Repair or replace error-detected parts. 8. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. Refrigerant pressure sensor Voltage (Approx.) Connector Terminal + − E41 3 1 5.0 V + − Continuity Refrigerant pressure sensor ECM Connector Terminal Connector Terminal E41 2 F17 78 Existed + − Voltage (Approx.) Refrigerant pressure sensor Connector Terminal E41 3 Ground 5.0 V + − Continuity Refrigerant pressure sensor ECM Connector Terminal Connector Terminal E41 1 F17 77 Existed |