DTC - General Descriptions

DTC P0390 CAMSHAFT POSITION SENSOR "B" CIRCUIT (BANK 2)

1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the camshaft position sensor.
Judge as NG when the number of camshaft signals remains abnormal.

2. COMPONENT DESCRIPTION









3. ENABLE CONDITIONS






4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

- Abnormality Judgment
Judge as NG when the condition where the number of camshaft position sensor signals are less than 2 time during 2 engine revs. continues.

Judgment Value






Time Needed for Diagnosis: Engine two revolutions x 50
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

- Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.

Judgment Value






Time Needed for Diagnosis: Engine two revolutions

6. DTC CLEAR CONDITION
- When the OK idling cycle is completed 40 times in a row
- When "Clear Memory" is performed

7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
- When the OK driving cycle is completed 3 times in a row
- When "Clear Memory" is performed

8. FAIL SAFE
Make the oil flow control solenoid valve driving duty a predetermined value (9.36%).

9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)