DTC DETECTING CONDITION: Detected when two consecutive driving cycles with fault occur. CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.
1. OUTLINE OF DIAGNOSIS Detect the slow response of front oxygen (A/F) sensor. For diagnosis, detect the trouble by processing the λ waveform in normal driving without forcibly changing the target air fuel ratio. 2. COMPONENT DESCRIPTION
3. EXECUTION CONDITION
4. GENERAL DRIVING CYCLE Perform diagnosis only once in a city driving including normal acceleration and deceleration. 5. DIAGNOSTIC METHOD 1 Detect the malfunction by checking “Cumulative value of time when λ changes from lean > rich” in comparison to “Time during which diagnosis is in progress”.
Judge as NG when the following conditions are established.
Time Needed for Diagnosis: 90000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles. 6. DIAGNOSTIC METHOD 2 Detect the malfunction by the cumulative value obtained from the amount of variation in λ change. Judge as NG when the following conditions are established.
Time Needed for Diagnosis: 90000 ms Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles. |
Inspection
1. Check that the oil control solenoid has no deformation, cracks or other damages.2. Measure the resistance between the oil control solenoid terminals.Terminal No.Standard1 and 27.25±0.4 - (when 20°C (68°F)) ...