Inspection Procedure

1. Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS).
2. Connect the Techstream to the DLC3.
3. Start the engine.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control.
5. Operate the VSV for ACIS.
6. Check the VSV air flow when switching the VSV.

OK 

Fig 1: Checking VSV Air Flow

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NG:  Go to step  4

OK: Go to Next Step 

NG: REPAIR OR REPLACE VACUUM HOSES 

OK: Go to Next Step 

1. Inspect the intake air control valve (See ON-VEHICLE INSPECTION ).

NG: REPLACE INTAKE MANIFOLD  (See REMOVAL )

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE )

1. Inspect the vacuum switching valve (See VACUUM SWITCHING VALVE (FOR ACIS) ).

NG: REPLACE VACUUM SWITCHING VALVE  (See REMOVAL )

OK: Go to Next Step 

1. Remove the EFI NO. 2 fuse from the engine room relay block.
2. Check the EFI NO. 2 fuse.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   EFI NO. 2 fuse	Always	Below 1 Ω

4. Reinstall the EFI NO. 2 fuse.
5. Disconnect the C38 intake air control valve connector.
6. Disconnect the C53 ECM connector.
7. Remove the integration relay from the engine room relay block.
8. Disconnect the 1B integration relay connector.
9. Measure the resistance according to the value(s) in the table below.

Standard Resistance 

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Terminals Of C53 ECM Connector

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OK: REPLACE ECM  (See ECM )