DTC DETECTING CONDITION: Detected when two consecutive driving cycles with fault occur. TROUBLE SYMPTOM: • Improper idling • Poor driving performance 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 malfunction of the intake air temperature sensor output properties. Using the following two diagnoses, judge as NG when either is NG. • Diagnosis 1 (correlation diagnosis): After the engine starts after the specified period of soaking time has elapsed, diagnose by correlation between intake air temperature sensor value, engine coolant temperature sensor value and ambient temperature sensor value. Judge as NG when the differences are both above the specified value by comparing between intake air temperature and engine coolant temperature, intake air temperature and ambient air temperature. • Diagnosis 2 (stuck diagnosis): Judge as NG when intake air temperature does not change under the driving condition where it should change, considering engine condition. 2. COMPONENT DESCRIPTION
3. EXECUTION CONDITION Diagnosis 1
Diagnosis 2
Map 1
Map 2
4. GENERAL DRIVING CYCLE • Diagnosis 1: Perform the diagnosis only once after the engine starts after a certain period of soaking time. • Diagnosis 2: Perform the diagnosis when the vehicle speed condition is met after warming up from a cold condition. 5. DIAGNOSTIC METHOD Judge as NG when Diagnosis 1 or Diagnosis 2 becomes NG. Diagnosis 1 If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Judgment Value
Map 3
Map 4
Time Needed for Diagnosis: Less than 1 second Diagnosis 2 Judge as NG when the following conditions are established. Judgment Value
Time Needed for Diagnosis: Less than 1 second Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles. |
Removal
1. ROCKER COVER RHNOTE:When replacing a single part, perform the work with the engine assembly installed to body.1. When working on the vehicleNOTE:When working on the vehicle, perform the following steps also.(1) Remove the clip (A), and loosen the clamps (B) and (C) securing the air intake boot.(2 ...