Engine Control Module (ECM)
WARNING: This page is about a different car, the 2007 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
- 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.
- Reverse Inhibit Solenoid Circuit Status
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Displays OK, Incomplete, Short B+, Short Gnd, Open.
- Reverse Inhibit Solenoid Command
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Displays Not Equipped/ON/OFF
- TR Sw. A/B/C/P
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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 ECM. HI displayed indicates a high voltage signal (B+) being monitored at the ECM.