Work Flow
OVERALL SEQUENCE

DETAILED FLOW
1.CHECK SYMPTOM
Check the malfunction symptoms by performing the following items.
2.SELF-DIAGNOSIS (CONSULT)
3.CHECK SELF-DIAGNOSIS RESULTS (CONSULT)
NOTE: Start with the diagnosis for the CAN communication system if "CAN COMM CIRCUIT [U1000] or CONTROL UNIT (CAN) [U1010]" is displayed.
4.PERFORM DIAGNOSIS BY SYMPTOM
5.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace the identified malfunctioning parts.
NOTE: Erase the stored self-diagnosis results after repairing or replacing the relevant components if any DTC No. has been indicated in the self-diagnosis results.
6.CHECK AFTER REPAIR
7.FINAL CHECK
Perform the operation check to confirm that the malfunction symptom is solved or that any other symptoms are present.
 Basic inspection
Basic inspection Inspection and adjustment
Inspection and adjustmentAV control unit
   	Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
DTC Index
Self-diagnosis results display item
 ...
   	
Variable induction air system
   	Description
Power Valves 1 and 2 
The power valves 1 and 2 are installed in intake manifold collector and used to 
control the suction passage of 
the variable induction air control system. They are set in the fully closed or 
fully opened position by the power 
valve actuators 1 and 2 operate ...
   	
U121D AV control unit
   	DTC Logic
Diagnosis Procedure
1.CHECK PLAYBACK OF A DISK (CD)
U121E AV CONTROL UNIT
DTC Logic
Diagnosis Procedure
1.CHECK PLAYBACK OF A DISK (CD)
U1225 AV CONTROL UNIT
DTC Logic
DTC DETECTION LOGIC
U1227 AV CONTROL UNIT
DTC Logic
Diagnosis Procedure
1.CHECK PLAYBACK OF A ...