Subaru Impreza 2005 General Description Manual page 217

Diagnostic Trouble Code (DTC) Detecting Criteria
CZ:DTC P2006 INTAKE MANIFOLD RUNNER CONTROL STUCK CLOSED
(BANK 1)
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of tumble generator valve motor function.
Judge close fixing malfunction when the opening degree is small even after finishing the tumble generator
valve open driving.
2. ENABLE CONDITION
Secondary Parameters
Battery voltage
Engine coolant temperature
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. DIAGNOSTIC METHOD
• Abnormality Judgment
Judge NG when the continuous time of completing the malfunction criteria below becomes more than 3 sec-
onds.
Judgment Value
Malfunction Criteria
Tumble generator valve angle
Tumble generator valve "open" signal
output
Time Needed for Diagnosis: 3 seconds
Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.
• Normality Judgment
Judge OK and clear the NG when the malfunction criteria below are completed.
Judgment Value
Malfunction Criteria
Tumble generator valve angle
Tumble generator valve "open" signal
output
5. DTC CLEAR CONDITION
• When the OK idling cycle was completed 40 times in a row
• When "Clear Memory" was performed
6. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
• When the OK driving cycle was completed 3 times in a row
• When "Clear Memory" was performed
7. FAIL SAFE
Tumble generator valve opening
• For tumble generator valve all closing points learning, not allowed to update to the closing side.
• For tumble generator valve all opening points learning, not allowed to update to the opening side.
Tumble generator valve control
• Output the close signal.
8. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Enable Conditions
≥ 10.9 V
≥ 0°C (32°F)
Threshold Value
< 67.4°
1.4 seconds or more
Threshold Value
≥ 67.4°
1.4 seconds or more
GD(STi)-217
GENERAL DESCRIPTION