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Home >> Cadillac >> 2009 >> STS Base, 4.6 A, RWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Lock Control System >> Diagnostic Information and Procedures >> Transmission Control Lever Malfunction >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON, Clear the DTC. Observe the scan tool RCDLR Shift Lock Solenoid Command parameter. The parameter should change from UNLOCK to LOCK when the brake pedal is depressed and released.
  2. Observe the scan tool RCDLR Shift Lock Solenoid State parameter. The parameter should change from UNLOCK to LOCK OFF when the brake pedal is depressed and released.
    • If the parameter does not change, replace the RCDLR.
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