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ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-1145 < FUNCTION DIAGNOSIS > [VQ35DE] C D E F G H I J K L M A EC N P O Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's normal driving pattern; the SRT will indicate “INCMP” for these items. NOTE: The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem- ory power supply is interrupted for several hours. If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con- tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the vehicle is returned to the customer untested. NOTE: If MIL is ON during the state emissions inspection, the vehicle is also returned to the customer untested even though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and DTC (No DTCs) before the inspection. SRT Item The table below shows required self-diagnostic items to set the SRT to “CMPLT”. *: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for SRT Set Timing SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and is shown in the table below. OK: Self-diagnosis is carried out and the result is OK. SRT item (CONSULT-III indication) Performance Priority* Required self-diagnostic items to set the SRT to “CMPLT” Corresponding DTC No. CATALYST 2 Three way catalyst function P0420, P0430 EVAP SYSTEM 2 EVAP control system purge flow monitoring P0441 1 EVAP control system P0442 2 EVAP control system P0456 HO2S 2 Air fuel ratio (A/F) sensor 1 P0133, P0153 Heated oxygen sensor 2 P0137, P0157 Heated oxygen sensor 2 P0138, P0158 Heated oxygen sensor 2 P0139, P0159 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” |