Monitors, Trips, Drive Cycles and Readiness Codes

3UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: READINESS MONITOR DRIVE PATTERN

1. PURPOSE OF READINESS TESTS

* The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission-related components, and indicate any detected abnormalities with Diagnostic Trouble Codes (DTC). Since various components need to be monitored during different driving conditions, the OBD II system is designed to run separate monitoring programs called Readiness Monitors.

* To view the status, enter the following menus: Powertrain / Engine / Monitor / Status2.

* When the Readiness Monitor status reads Complete, the necessary conditions have been met for running the performance tests for that Readiness Monitor.

* A generic OBD II scan tool can also be used to view the Readiness Monitor status.

HINT
Many state Inspection and Maintenance (I/M) programs require a vehicle's Readiness Monitor status to show Complete before beginning emissions tests.

* The Readiness Monitor will be reset to Incomplete if:

* The ECM has lost battery power or blown a fuse.

* DTCs have been cleared.

* The conditions for running the Readiness Monitor have not been met.

* If the readiness monitor status shows "Incomplete", follow the appropriate readiness monitor drive pattern to change the status to "Complete".

CAUTION:
Strictly observe posted speed limits, traffic laws, and road conditions when performing these drive patterns.

NOTICE:
The following drive patterns are the fastest method of completing all the requirements necessary for making the readiness monitor status read "complete". If forced to momentarily stop a drive pattern due to traffic or other factors, the drive pattern can be resumed. Upon completion of the drive pattern, in most cases, the readiness monitor status will change to "complete". Sudden changes in vehicle load and speed, such as driving up and down hills and/or sudden acceleration, hinder readiness monitor completion.

2. CATALYST MONITOR

(a) Refer to Confirmation Driving Pattern [P0420] P0420.

3. VVT SYSTEM MONITOR

(a) Refer to Confirmation Driving Pattern [P0011] P0011.

4. EVAP SYSTEM MONITOR (KEY OFF TYPE)

(a) Refer to Confirmation Driving Pattern [EVAP System] EVAP System.

5. HEATED OXYGEN SENSOR MONITOR

(a) Refer to Confirmation Driving Pattern [P0130] P0130.

(b) Refer to Confirmation Driving Pattern [P0133] P0133.

(c) Refer to Confirmation Driving Pattern [P0134] P0134.

(d) Refer to Confirmation Driving Pattern [P0136] P0136.

6. HEATED OXYGEN SENSOR HEATER MONITOR

(a) Refer to Confirmation Driving Pattern [P0031] P0031.