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Problem Probable Causes Corrective Action
CM7 display shows
software for only
CM7.
Loose or damaged harness
Check that all harnesses between
CM7’s and ATO are secure.
Check for loose pins. If the
problem persists, swap out
computer from one bank to
another and reinitialize.
1.14.2 CM7 Useful Codes
To enter any of the following codes: Press the UNLOCK ▼ button three times. TECH is
displayed. Press the 9 button. CODE is displayed. Enter a code listed below for the appropriate
function.
• Enter Setup in Tech Mode – Enter 7378.
• Change from F° to C° - Enter 1658. The computer displays off. Turn the computer
on and check temperature to see the temperature scale. If the desired scale is not displayed,
repeat.
• Reset Factory Menu - Enter 3322. The computer display flashes and quickly counts
from 1-40 and switches to off. (NOTE: This will delete any manually entered menu
items).
• Reset BADCRC Message - Disconnect board locator plug (J10). Reinsert plug. Enter
9988. Computer display switches to off. Remove and then restore power to the
computer using the 20-pin plug.
• Reset RECOVERY FAULT CALL SERVICE – Enter 0042.
• Reset CALL TECH Message - Disconnect board locator plug (J10). Reinsert plug.
Enter 1000. Computer display switches to off. Remove and then restore power to the
computer using the 20-pin plug. If this message appears at any time other than after upgrade
from a previous version, replace the computer
PASSWORDS
Program Mode: Press the UNLOCK ▼ button once. The computer displays PROGRAM.
Press the 9 button. ENTER CODE is displayed. Enter 1650.
Manager Mode: Press the UNLOCK ▼ button twice. The computer displays MANAGER.
Press the 9 button. ENTER CODE is displayed. Enter 4321.
Tech Mode: Press the UNLOCK ▼ button three times. The computer displays TECH. Press the
9 button. CODE is displayed. Enter 7378.