Code 22 (Control Module Error)
If Code 22 occurs, control module has identified out-of-range data. Replace ATC control panel. See ATC CONTROL MODULE/CONTROL PANEL under REMOVAL & INSTALLATION.
NOTE:
Failure Codes 23 through 28 are set during normal ATC operation. ATC system must be in operation for 15 minutes before these codes will set. ATC control module will compensate for feedback failures immediately during power up. Codes will not be set until the 15-minute limit has been reached. Codes are then stored in memory and must be erased. See EXITING DIAGNOSTIC MODE .