Supra L6-3.0L DOHC Turbo (7M-GTE) (1987)
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Overdrive Indicator Lamp: Testing and Inspection
CHECK "O/D OFF" INDICATOR LIGHT
1. Turn the ignition switch ON.
2. The "O/D OFF" light will come on when the O/D switch is placed at OFF.
3. When the O/D switch is set to ON, the "O/D OFF" light should go out.
If the "O/D OFF" light flashes when the O/D switch is set to ON, the electronic control system is faulty.