Description of On-Board Diagnostics

PRECHECK





1. WARNING FOR A/C COMPRESSOR LOCK
If compressor lock occurs during A/C operation, the A/C switch indicator on the A/C control assembly starts blinking to warn the driver.
When this occurs, check for compressor lock (DTC 22) using DTC check then proceed to inspect the circuit or the component.





2. LIST OF OPERATION METHODS
By operating each of the A/C control switches as shown the diagram, it is possible to enter the diagnosis check mode.

3. ACTUATOR CHECK





a. After entering the DTC check mode (Sensor Check Mode) press the R/F switch.
b. Since each damper, motor and relay automatically operates at 1 sec. intervals beginning in order from 10 in the temperature display, check the temperature and air flow visually and by hand.
If the slower display is desired, press the DEF switch and change it to step operation. Each time the DEF switch is pressed, the display changes by 1 step.






HINT:
^ Code are displayed in order from the smaller to the larger numbers.
^ To cancel the check mode, press the OFF switch.