mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Main Relay (Computer/Fuel System) > < Idle/Bypass Air Control Valve <--> [Idle Speed/Throttle Actuator - Electronic]|Specifications|Page 4569
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Idle/Bypass Air Control Valve: Testing and Inspection

INSPECTION

BAC/Air Valve
1. Verify that the engine coolant temperature is below 20°C (68°F).

2. Connect the SST to the data link connector.
3. Set the system select to position 1 and test switch to SELF TEST.
4. Start the engine.
5. Verify that the idle speed decreases gradually as the engine warms up.

BAC/Idle Air Control Valve
1. Remove the throttle body.

2

Measure the resistance of the idle air control valve.

Resistance: 10.7-12.3 Ohms [at 20°C (68°F)] 

3. If not as specified, replace the BAC valve.

Main Relay (Computer/Fuel System) > < Idle/Bypass Air Control Valve <--> [Idle Speed/Throttle Actuator - Electronic]|Specifications|Page 4569