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Home >> Buick >> 2000 >> Century Custom >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1635: 5-Volt Reference 1 Circuit >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: DTC P1635: 5-Volt Reference 1 Circuit (Steps 1-4)
G00248751Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P1635: 5-Volt Reference 1 Circuit (Steps 5-13)
G00248752Courtesy of GENERAL MOTORS CORP.
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