Trouble Diagnosis

SYMPTOM CHART

FAIL-SAFE SYSTEM CHECK




1. Turn ignition switch to ON position.
2. Turn ASCD main switch to ON and check if the "set indicator" blinks.
If the indicator lamp blinks, check the following.
- ASCD steering switch.




3. Drive the vehicle at more than 40 kph (25 MPH) and push SET/COAST switch.
If the indicator lamp blinks, check the following.
- Vehicle speed sensor.
- ASCD pump circuit.
- Replace control unit.




4. Depress brake pedal slowly (brake pedal should be depressed more than 5 seconds).
If the indicator lamp blinks, check the following.
- ASCD brake/stop lamp switch.
5. END. (System is OK.)




POWER SUPPLY AND GROUND CIRCUIT CHECK







ASCD BRAKE / STOP LAMP SWITCH CHECK







ASCD STEERING SWITCH CHECK




VEHICLE SPEED SENSOR CHECK







ASCD PUMP CIRCUIT CHECK







ASCD ACTUATOR / PUMP CHECK




THROTTLE POSITION SENSOR SIGNAL CHECK