Cis Digital Control (200/200 QUATTRO) Input Codes

Locate 2 diagnostic connectors in drivers footwell area. Connect a test light between connectors A and B. See Fig 1 .
Connect a jumper wire to other terminal in connector A. Touch other end of jumper wire to the only terminal in connector B for at least 4 seconds. Fault codes will now be displayed by the flashing "CHECK" light for California vehicles or a flashing test light for Federal vehicles.
NOTE: Careful attention must be paid to flashing light, since there are no discernable break points between 4-digit number groups.
Trouble codes will then be flashed as 4 digit numbers. After each flash there will be a 1/2 second pause before the next flash occurs. Adding flashes together will obtain each code digit.

Fig 1: Diagnostic Connector Identification
Courtesy of AUDI OF AMERICA, INC.
To advance to next fault code, touch end of jumper wire to the only terminal in connector B for at least 4 seconds. See Fig 1 . After each digit code is flashed, there will be a 2 1/2 second pause. After fourth digit of number is flashed, a 2 1/2 second pause will follow before the fault code is repeated.
The fault code will be repeated until the ignition is turned off. Record fault code. Check the list of input codes and possible problems. See CIS DIGITAL CONTROL INPUT FAULT CODE IDENTIFICATION CHART.
Check and repair circuits and/or sensors as indicated. After the fault is corrected, repeat step 1) and check for additional codes.