Fail-Safe Function

1. CANCELLING FUNCTION WHEN CANCEL SWITCH (SIGNALS) ARE IN ABNORMAL CONDITION
- Group 1 switches: SET/COAST switch ON, RESUME/ACCEL switch ON and CANCEL switch ON
- Group 2 switches: Brake switch OFF, Stop Light switch ON, Clutch switch OFF and Inhibitor switch ON
1. When at least one of the group 1 switches and one of the group 2 switches are operated simultaneously, the system is cancelled and held in the non-operating state. When the switches in groups 1 and 2 are turned from ON to OFF (except brake and clutch switches which are turned from OFF to ON) and then the switches in group 1 are turned ON, the system starts operation.
2. If the cruise main switch is turned ON with at least one switch in group 1 turned ON, the system does not operate and remains in that state until the cruise main switch is turned OFF.

2. CANCELLING FUNCTION WHEN THE SYSTEM CIRCUIT IS IN ABNORMAL CONDITION
In the following states, the system is cancelled and the memorized speed is also cancelled. After cancellation of the system, the cancelling function is held until the IG switch or cruise main switch is turned OFF
1. The stepping motor terminal is grounded or opened.
Or the stepping motor driving circuit is shorted or opened.
2. The stepping motor clutch driving circuit is grounded.
3. The vehicle speed signal varies more than 110 km/h (6 MPH) per 360 m sec.
4. The fused internal relay is detected while the vehicle is not in cruise control operation.
5. The internal circuit of the cruise control module stops its operation in an abnormal condition.
6. There is a discrepancy between the values stored in RAM inside the cruise control module.
7. An abnormal condition is detected by self-diagnosis of the cruise control module which is performed when ignition switch is turned ON.

3. CANCELLING FUNCTION WHEN THE STEPPING MOTOR IS IN ABNORMAL CONDITION
1. The cruise control is cancelled when an improper stepping motor is detected.
2. The cruise control is cancelled when unduly long and frequent energization of stepping motor is detected.
The system is held in this state for 2 to 20 minutes.