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Home >> Cadillac >> 2003 >> CTS Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Lock Control System >> Diagnostic Information and Procedures >> Scan Tool Data Definitions >> Powertrain Control Module (PCM) >> IMS (Internal Mode Switch) States

IMS (Internal Mode Switch) States

A/B/C/P:  Displays LOW or HI for the state of each of the four inputs from the IMS. LOW displayed indicates a low voltage signal (0 volts) being monitored at the PCM. HI displayed indicates a high voltage signal (B+) being monitored at the PCM.

TCC Brake Switch:  Displays ON when the brake pedal is depressed and the brake switch contacts close. Displays OFF when the brake pedal is released and the brake switch contacts open.

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