Engine Control Module (ECM)
- Current Gear
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Displays current gear position of the transmission.
- TCC Brake Switch
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Displays ON or OFF status of the TCC Brake switch.
- TR Sw. A/B/C/P
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Displays LOW or HI for the state of each of the 4 inputs from the IMS. LOW displayed indicates a low voltage signal (0 volts) being monitored at the ECM. HI displayed indicates a high voltage signal (B+) being monitored at the ECM.