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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls And Fuel - 2.5L (LCV) - Diagnostic Information And Procedures (P0351 - P2635)) >> Diagnostic Information And Procedures >> DTC P0641, P0651, P0697, P06A3, Or P06D2: 5V Reference 1-5 Circuit >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different variant/trim than selected.

The engine control module (ECM) has 5 internal 5V reference circuits. Each internal reference circuit provides external 5V reference circuits for one or more sensors. A short to ground or short to voltage on one external 5V reference circuit can affect all the components connected to the same internal 5V reference circuit.

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