Generating Readiness Code
Readiness code must be generated if Engine Control Module (ECM) memory is cleared, battery voltage is disconnected or ECM is disconnected. To generate readiness code, vehicle must be stationary, transmission in Park or Neutral, all electrical consumers off, A/C switched off and coolant temperature at least 176°F (80°C). If possible it is best to warm-up vehicle by test driving. Connect VAS 5051 or equivalent scan tool to DLC. DLC is located behind cover under left side of steering column.
Using scan tool, retrieve DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES in appropriate SELF DIAGNOSTICS article. If DTCs were stored, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate SELF DIAGNOSTICS article. Using scan tool, clear DTC memory. See FUNCTION 05 - CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM in appropriate SELF DIAGNOSTICS article. After clearing DTC memory. Follow scan tool instructions to complete readiness code generation. Using scan tool, observe display field 1, in display group 086. See Figure and Figure . Readiness code should display 0 0 0 0 0 0 0 0. If readiness code displays as specified, testing is complete.