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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Automatic Transmission - 6L80E) >> Diagnostic Information and Procedures >> DTC P1684, P1685 or P1686 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Clear the DTC and operate the vehicle under the Conditions for Running the DTC and the Conditions for Setting the DTC.
  2. Shut the ignition OFF for 30 seconds, and then verify that the DTC does not reset.
    • If the DTC resets, replace the control solenoid (w/body and TCM) valve assembly.
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