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EC9-322 < DTC/CIRCUIT DIAGNOSIS > [R9M] P1544 EGT SENSOR 2 Is the inspection result normal? YES >> GO TO 5. NO >> GO TO 4. 4. CHECK EXHAUST GAS TEMPERATURE (EGT) SENSOR 2 POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between ECM harness connector and EGT sensor 2 harness connector. 4. Also check harness for short to power and short to ground. Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-41, "Intermittent Incident" . NO >> Repair or replace error-detected parts. And then GO TO 11. 5. CHECK EXHAUST GAS TEMPERATURE (EGT) SENSOR 2 SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between ECM harness connector and EGT sensor 2 harness connector. 4. Also check harness for short to power and short to ground. Is the inspection result normal? YES >> GO TO 6. NO >> Repair or replace error-detected parts. And then GO TO 11. 6. CHECK EXHAUST GAS TEMPERATURE SENSOR 2 EC9-323, "Component Inspection (DPF Upstream Temperature Sensor)" . Is the inspection result normal? YES >> GO TO 7. NO >> Replace error-detected parts. And then GO TO 11. 7. CHECK TC BOOST SENSOR ROUTING CIRCUIT EC9-197, "Diagnosis Procedure" . Is the inspection result normal? YES >> GO TO 8. NO >> Replace error-detected parts. And then GO TO 11. 8. CHECK AIR FUEL RATIO (A/F) SENSOR ROUTING CIRCUIT EC9-368, "Diagnosis Procedure" . Is the inspection result normal? YES >> GO TO 9. + − Voltage (Approx.) EGT sensor 2 Connector Terminal F139 2 Ground 5 V + − Continuity ECM EGT sensor 2 Connector Terminal Connector Terminal F83 105 F139 2 Existed + − Continuity ECM EGT sensor 2 Connector Terminal Connector Terminal F83 109 F139 1 Existed |