Description of On-Board Diagnostics

PANEL DIAGNOSIS SYSTEM





If a trouble occurs in A/C system, the specified lamp on the control panel starts blinking during the diagnostic sensor check.
During system diagnosis, a trouble is indicated on the panel by the blinking of a specified light instead of a code display (See TROUBLE CODE CHART).
For example, when a trouble occurs in solar sensor circuit, the LED for DEF mode switch will be blinking during the diagnostic sensor check.





SWITCH





LED





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. When this occurs, check for compressor lock using panel diagnosis check them proceed to inspect the circuit or the component.