| System Block Diagram |

| Component part | Function | |
| Vehicle-speed sensor | Converts vehicle speed to pulse. | |
| ECM | Receives signals from sensor and control switches. | |
| Cruise control indicator | Illuminate when CRUISE main switch is ON (Built into cluster) | |
| Cruise Control switches | CRUISE switch | Switch for automatic speed control power supply. |
| RES+ switch | Controls automatic speed control functions by Resume/Accel switch (Set/Coast switch) | |
| SET- switch | ||
| Cancel switches | Cancel switch | Sends cancel signals to ECM. |
| Brake-pedal switch | ||
| Transaxle range switch (A/T) | ||
| ETC motor | Regulates the throttle valve to the set opening by ECM. | |
Cruise Control The cruise control system is engaged by the cruise "ON/OFF" main switch located on right of steering wheel column. The system has the capability to cruise, coast, accelerate and resume speed.
Inspection 1. Ignition "OFF”. 2. Disconnect the connector of auto defog control actuator. 3. Verify that the auto defog control actuator operates to the defrost ON mode when connecting 12V to the terminal 3 and grounding terminal 7. 4.
Inspection 1. Connect the battery voltage and check the blower motor rotation. 2. If the blower motor voltage is not operated well, substitute with a known-good blower motor and check for proper operation. 3. If the problem is corrected, replace the blower motor.