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ECK-316 < DTC/CIRCUIT DIAGNOSIS > [K9K] P1489 LOW PRESSURE EGR VOLUME CONTROL VALVE UPSTREAM TEM- PERATURE SENSOR P1489 LOW PRESSURE EGR VOLUME CONTROL VALVE UPSTREAM DTC Logic INFOID:0000000010289949 DTC DETECTION LOGIC NOTE: • P1480, P1481, P1482, P1483, P1484, P1485, P1486, P1487 and P1488. DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON and wait at least 5 seconds. 2. Check DTC. Is DTC detected? YES >> Proceed to ECK-316, "Diagnosis Procedure" NO >> INSPECTION END Diagnosis Procedure INFOID:0000000010508590 1. CHECK LOW PRESSURE EGR VOLUME CONTROL VALVE Visually check low pressure EGR volume control valve for chipping. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2. CHECK DIESEL PARTICULATE FILTER ECK-359, "Component Inspection" . Is the inspection result normal? YES >> GO TO 3. NO >> Replace diesel particulate filter. 3. CHECK ECM HARNESS CONNECTOR CONNECTIONS Check ECM harness connector connection. YES >> GO TO 4. DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P1489 LOW PRESSURE EGR LOW • 2.DEF: VOLTAGE TOO HIGH • 3.DEF: OPERATION TEM- PERATURE TOO HIGH • ECM detects a short circuit to battery. ture is 180 ° C (356 ° F) or more. • Harness or connectors (EGR temperature sensor circuit is short- • EGR temperature sensor |