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Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC P1626 >> Circuit/System Description
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Circuit/System Description

The body control module (BCM) sends the fuel enable password to the powertrain control module (PCM) via the serial data circuit. The PCM compares this password to the learn password. If the learned password matches the password received from the BCM, the PCM will allow vehicle starting.