Operation CHARM
: Car repair manuals for everyone.
Hosted by
mcallihan.com
Home
>>
Volvo
>>
1995
>>
850 L5-2.4L VIN 55 B5254S
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Emission Control Systems
>>
Air Injection
>>
Air Injection Control Valve
>>
Description and Operation
Air Injection Control Valve: Description and Operation
Secondary Air Injection (AIR) System:
PURPOSE
Controls fresh air flow from the AIR pump to the check valve.
OPERATION
Control valve operation is regulated by the ECM via a vacuum solenoid.