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Home >> Pontiac >> 2007 >> Solstice GXP, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls & Fuel - 2.4L - DTC P0420 To P2544) >> DTC P0641 or P0651 >> Circuit/System Verification

Circuit/System Verification

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With the ignition ON and the engine OFF, observe the 5-volt Reference 1 and 2 parameters. The scan tool should display 4.3-4.7 volts for a normally operating system.

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