Operation CHARM: Car repair manuals for everyone.

Viewing Diagnostic Trouble Codes (DTC)

Trouble codes are output to the operator through flashing of the door ajar lamp and sounding of the chime. Each code is represented by a two-digit number such as 21. The high digit is output first followed by a one second pause followed by the second digit. Each two-digit code is separated by a three-second pause. Each digit is also made up of one to nine one-second lamp flashes.