Cruise Control: Testing and Inspection

Malfunction Detection Conditions





SYMPTOM CHART




FAIL-SAFE SYSTEM CHECK
1. Turn ignition switch to ON position.
2. Turn ASCD main switch to ON and check if the "cruise indicator" blinks.
If the indicator lamp blinks, refer to the following
^ ASCD Steering Switch Check.




3. Drive the vehicle at more than 48 kph (30 MPH) and push SET/COAST switch.
If the indicator lamp blinks, refer to the following
^ Vehicle Speed Sensor Check.
^ ASCD Actuator Circuit Check.
^ Replace control unit.




4. Depress brake pedal slowly (brake pedal should be depressed more than 5 seconds).
If the indicator lamp blinks, refer to the following
^ ASCD Brake/Stop Lamp Switch Check.
5. END. (System is OK.)





POWER SUPPLY AND GROUND CIRCUIT CHECK





ASCD MAIN SWITCH CHECK





ASCD HOLD RELAY CHECK





ASCD BRAKE/STOP LAMP SWITCH CHECK





ASCD STEERING SWITCH CHECK





VEHICLE SPEED SENSOR CHECK





ASCD ACTUATOR CIRCUIT CHECK





ASCD ACTUATOR CHECK




ASCD MAIN SWITCH
Check continuity between terminals by pushing switch to each position.




ASCD BRAKE SWITCH AND STOP LAMP SWITCH
Check each switch after adjusting brake pedal.




PARK NEUTRAL POSITION (PNP) SWITCH




ASCD HOLD RELAY
Check continuity between terminals 3 and 5, 6 and 7.