Operation CHARM
: Car repair manuals for everyone.
Home
>>
Buick
>>
1988
>>
Century Estate Wagon V6-231 3.8L
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Computers and Control Systems
>>
Testing and Inspection
>>
Scan Tool Testing and Procedures
>>
Function Selector Positions
>>
PPSW - Pump Pressure Switch
PPSW - Pump Pressure Switch
Indicates
fuel pump
feed circuit voltage. Should indicate battery voltage when engine is cranking or running.