LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2016 >> Terrain SL, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 3.6L (LFX) - DTC P0351 To P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0641, P0651, P0697, or P06A3: 5V Reference (ECM) >> Circuit/System Description

Circuit/System Description

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

The engine control module (ECM) has 4 internal 5V reference circuits. Each internal reference circuit provides external 5V reference circuits for more than one sensor. A short to ground or short to voltage on one of the external 5V reference circuits can affect all the components connected to the same internal 5V reference circuit.

scientia non olet · About LEMON Manuals