– Introduction General Information In–29 3. Catalyst Monitor (Front and rear heated oxygen sensor equipped) (64 to 88 km/h) 40 to 55 mph (56 to 72 km/h) 35 to 45 mph Idling IG SW off Warm up 3 min. 7 min. A18907 Preconditions The monitor will not run unless: MIL is OFF Intake Air Temperature (IAT) is 14 ° F (–10 ° C) or higher* Engine Coolant Temperature (ECT) is 176 ° F (80 ° C) or higher * NOTE for 2002 MY and later: The readiness test can be completed in cold ambient conditions (less than 14 ° F / –10 ° C), if the drive pattern is repeated a second time after cycling the ignition off.
Drive Pattern (a) Connect the OBD II scan tool to the DLC3 to check monitor status and preconditions. (b) Drive vehicle at 40 – 55 mph (64 – 88 km/h) for approximately 3 minutes. NOTICE: Drive with smooth throttle operation and avoid sudden acceleration. If IAT is less than 50 ° F (10 ° C) when starting engine, continue to drive vehicle at 40 – 55 mph (64 – 88 km/h) for approximately 4 minutes. (c) Drive vehicle at 35 – 45 mph (56 – 72 km/h) for approximately 7 minutes. NOTICE: Drive with smooth throttle operation and avoid sudden deceleration as much as possible (avoid sud- den, full closure of the throttle).
(d) If readiness status does not switch to complete, ensure preconditions are met, turn ignition off, and then repeat steps ”b” through ”c”. 1996–2003 ADDITION OF OBD (OTH021U) 29 Author : Date: