FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
:
Car repair manuals for everyone.
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Buick
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1987
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Century V6-173 2.8L VIN W FI
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
>>
Scan Tool Testing and Procedures
>>
Function Selector Positions
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DIS - Reference Signal
DIS - Reference Signal
A "Scan" tool will read this signal and is displayed in rpm. Refer to
Ignition System
/ Description and Operation
for more information on the Direct Ignition System
(DIS)
.