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− HO2S Monitor and Readiness Code HO2S Heater Monitor Readiness Code Enable Criteria Procedure Enable Criteria Procedure Procedure 11-90 Fuel and Emissions Systems How to Set Readiness Codes (cont’d) NOTE: disconnected or when the PCM is cleared with the • At engine start up, the ECT and IAT are higher than • • 1. Connect the scan tool to the vehicle’s data link connector (DLC), and bring up the tool’s generic 2. Start the engine. 3. Test-drive the vehicle under stop-and-go conditions with short periods of steady cruise. After about 2.5 4. If the readiness code is still set to incomplete, check for a temporary DTC. If there is no DTC, one or NOTE: • Do not turn the ignition switch off during the procedure. • All readiness codes are cleared when the battery is disconnected or when the PCM is cleared with the ECT at 140°F (60°C) or higher. 1. Connect the scan tool to the vehicle’s data link connector (DLC), and bring up the tool’s generic 2. Start the engine. 3. Test-drive the vehicle under stop-and-go conditions with short periods of steady cruise. During the 4. If the readiness code is still set to incomplete, check for a temporary DTC. If there is no DTC, the enable NOTE: All readiness codes are cleared when the battery 1. Connect the scan tool to the vehicle’s data link connector (DLC), and bring up the tool’s generic 2. Start the engine, and let it idle for 1 minute. The readiness code should switch from incomplete to 3. If the readiness code is still set to incomplete, check for a temporary DTC. If there is no DTC, repeat the 03/07/29 09:19:44 61S0X050_110_0090 Evaporative Emission (EVAP) Control • All readiness codes are cleared when the battery is At engine start up, the ECT and IAT are within 18°F (10°C) of each other. 7°F (20°C), but lower than 95°F (35°C). than 9°F (5°C) from the IAT. |