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Home >> Saturn >> 2000 >> SC2 Automatic, MP6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1635: 5-Volt Reference Circuit >> Diagnostic Aids
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Diagnostic Aids

When attempting to diagnose an intermittent problem, use scan tool to review malfunction history diagnostic information. This data can be used to duplicate a problem. Wiggling wire while watching for a change in any one of the sensor may locate area where a short to ground or short to voltage on the 5-volt reference circuit could exist.

DTCs P0562, P0563 and P0711 may set if a short to ground exists on the 5-volt reference circuit.

DTCs P0561, P0562 and P0711 may set if a short to battery voltage exists on the 5-volt reference circuit. Driveability conditions will exist if a short on the 5-volt reference circuit is present.