Possible Causes
Malfunction is detected when IACV-AAC valve does not operate properly. Possible causes are:
- Defective IACV-AAC valve.
- IACV-AAC valve circuit open (malfunction "A").
- IACV-AAC valve circuit shorted (malfunction "B").
NOTE:
Perform the following DTC confirmation tests in order. If a DTC confirmation test has been previously performed, turn ignition off and wait at least 5 seconds before performing next DTC confirmation test.