Circuit Operation

This circuit judges the signals of each switch ("ON/OFF", "CANCEL", "COAST/SET" and "ACC/RES") of the auto-cruise control switch. The ECM detects the state of the auto-cruise control switch by sensing the voltages shown below.

• When all switches are OFF: 4.7 - 5.0 volts
• When the "ON/OFF" switch is "ON": 0 - 0.5 volt
• When the "CANCEL" switch is "ON": 1.0 - 1.8 volts
• When the "COAST/SET" switch is "ON": 2.3 - 3.0 volts
• When the "ACC/RES" switch is "ON": 3.5 - 4.2 volts