Exiting Diagnostic Mode
Depress any ECC function keys except rear window defroster. Turn ignition switch "OFF" for 10 seconds. This will 'Exit' ECC panel from diagnostic mode, but will not clear any trouble codes. Original temperature setting should appear on ECC panel.
NOTE:
The terms "enter diagnostics" and "exit diagnostics" will be used periodically throughout this section. Follow the procedure for entering diagnostic mode when instructed to "enter diagnostics". Follow the procedure for exiting diagnostic mode when instructed to "exit diagnostics".