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EC-462 < ECU DIAGNOSIS > [VQ40DE] ECM SRT Set Timing SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is OK: Self-diagnosis is carried out and the result is OK. NG: Self-diagnosis is carried out and the result is NG. —: Self-diagnosis is not carried out. When all SRT related self-diagnoses show OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will → Case 1 above When all SRT related self-diagnoses show OK results through several different cycles, the SRT will indicate → Case 2 above If one or more SRT related self-diagnoses show NG results in 2 consecutive cycles, the SRT will also indicate → Case 3 above The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one the number (1) memory must be erased from the ECM after repair. • If the 1st trip DTC is erased, all the SRT will indicate “INCMP”. NOTE: SRT Service Procedure If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review Self-diagnosis result Example Diagnosis Ignition cycle ← ON → OFF
← ON → OFF
← ON → OFF
← ON → All OK Case 1 P0400 OK (1) — (1) OK (2) — (2) P0402 OK (1) — (1) — (1) OK (2) P1402 OK (1) OK (2) — (2) — (2) SRT of EGR “CMPLT” “CMPLT” “CMPLT” “CMPLT” Case 2 P0400 OK (1) — (1) — (1) — (1) P0402 — (0) — (0) OK (1) — (1) P1402 OK (1) OK (2) — (2) — (2) SRT of EGR “INCMP” “INCMP” “CMPLT” “CMPLT” NG exists Case 3 P0400 OK OK — — P0402 — — — — P1402 NG — NG NG (Consecutive NG) (1st trip) DTC 1st trip DTC — 1st trip DTC DTC (= MIL ON) SRT of EGR “INCMP” “INCMP” “INCMP” “CMPLT” 2009 Pathfinder |