Mazda 626 MX-6 Workshop Manual page 269

86U04B-037
86U04A-064
69G04C-070
Gasket
69G04C-071
BAC Valve
Air valve
1. Remove the BAC valve from the throttle body.
2. Blow air through the valve from port A and check
that air comes out of port B when the BAC valve
is cold.
3. If not correct, replace the BAC valve.
Note
Refer to " Istallation" on this page for the BAC
valve installation.
ISC valve
1. Disconnect the ISC valve connector.
2. Connect an ohmmeter to the terminals of the ISC
valve.
3. Check the resistance.
Resistance (normal operating temperature):
6.3—9.9 Q
4. If not correct, replace the BAC valve.
Removal
1. Remove the screws.
2. Remove the BAC valve from the throttle body.
Installation
Caution
Use a new gasket.
1. Remove any dirt or old sealant from the contact
surfaces.
2. Apply sealant to both sides of the gasket.
3. Tighten the screws.
4B
ISC SYSTEM
4B—49