Readiness Code Test Requirements

Ensure throttle valve is not damaged or dirty. Throttle valve angle must be less than 10 degrees. Ensure all fuses are okay, battery voltage is at least 11.5 volts and fuel pump relay is okay. Ensure all electrical accessories are off and A/C is off. Ensure engine is mechanically sound. Ensure no intake or exhaust system leaks exist. Ensure engine coolant temperature is at least 176°F (80°C). On vehicles with M/T, gear shifter must be in neutral with parking brake set. On vehicles with A/T, selector lever must be in park or neutral with parking brake set.

WARNING: When working on vehicles ensure that parking brake is set and transmission is in park (A/T) or neutral (M/T). For safety during road test, it is advisable to have a helper operate or observe scan tool from rear seat. If test and measuring instruments are operated from front passenger's seat and vehicle is involved in an accident, there is a possibility the person sitting in this seat may receive serious injuries when air bag is deployed.

NOTE: If ignition is turned off at any time while Generating Readiness Code, Readiness Code will not be generated. When DTC memory is erased or ECM looses power Readiness Code is also erased.

NOTE: If possible it is best to warm-up vehicle by test driving. Connect scan tool to DLC. DLC is located at left side of steering column. See Figure. During readiness code generating procedure, if test result is indicated as "OK" after selecting a display group, testing has already been carried out and it is okay to proceed to next work step.