Circuit Operation

This circuit judges the signals of each switch ("SET," "RESUME" and "CANCEL") of the auto-cruise control switch. The PCM detects the state of the auto-cruise control switch by sensing the voltages shown below.

• When all switches are OFF: 4.7 - 5.3 volts
• When the "MAIN" switch is ON: 0 - 0.3 volt
• When the "SET" switch is ON: 2.1 - 2.7 volts
• When the "RESUME" switch is ON: 3.3 - 4.0 volts
• When the "CANCEL" switch is ON: 0.8 - 1.5 volts