BAC Valve System

BAC Valve Operation Inspection
1. Connect data link connector terminals TEN and GND with a jumper wire.
2. Connect a tachometer to data link connector terminal IG-.
3. Verify that the engine is in cold condition, and start the engine.
4. Verify that the engine speed decreases as the engine warms up.
5. Disconnect the jumper wire.
6. If the engine speed will not decrease or decreases slowly, check the water hose connected to the BAC valve for leakage and clogs.
7. If the water hose is OK, inspect the following.
^ Air valve
^ IAC valve