Toyota RAV4 manuals

Toyota Sienna Service Manual: Readiness monitor drive pattern

1. PURPOSE OF READINESS TESTS

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

The Readiness Monitor will be reset to INCMPL (incomplete) if:

If the Readiness Monitor status shows INCMPL, follow the appropriate Readiness Monitor Drive Pattern to change the status to COMPL.

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

NOTICE: These drive patterns represent the fastest method of satisfying all conditions necessary to achieve complete status for each specific Readiness Monitor.

In the event of a drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed. In most cases, the Readiness Monitor will still achieve complete status upon completion of the drive pattern.

To ensure completion of the Readiness Monitors, avoid sudden changes in vehicle load and speed (driving up and down hills and/or sudden acceleration).

Contents:

Contents

2. CATALYST MONITOR (ACTIVE AIR-FUEL RATIO CONTROL TYPE)

CATALYST MONITOR (ACTIVE AIR-FUEL RATIO CONTROL TYPE)

  1. Preconditions
    The monitor will not run unless: The MIL is OFF.
  2.  Drive Pattern
  1.  Connect an intelligent tester.
  2.  Turn the ignition switch to the ON position.
  3.  Turn the tester or scan tool ON.
  4.  Clear the DTCs.
  5.  Start the engine and warm it up.
  6.  Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes.
  1.  Monitor Status
  1.  Check the Readiness Monitor status displayed on the tester.
  2.  If the status does not switch to COMPL (complete), extend the driving time.

3. EVAP MONITOR (KEY-OFF TYPE)

  1.  Preconditions

The monitor will not run unless:

  1.  Monitor Conditions
  1.  Turn the ignition switch off and wait for 6 hours.

HINT: Do not start the engine until checking Readiness Monitor status. If the engine is started, the step described above must be repeated.

  1.  Monitor Status
  1.  Connect an intelligent tester to the DLC3.
  2.  Turn the ignition switch to the ON position.
  3.  Turn the tester or scan tool ON.
  4.  Check the Readiness Monitor status displayed on the tester or scan tool.

    If the status does not switch to COMPL (complete), restart the engine, make sure that the preconditions have been met, and then perform the Monitor Conditions again.

4. A/F SENSOR AND HO2S MONITORS

  1.  Preconditions

The monitor will not run unless:

  1.  Drive Pattern for front A/F sensor and HO2 sensor.
  1. Connect an intelligent tester to the DLC3.
  2.  Turn the ignition switch to the ON position.
  3.  Turn the tester ON.
  4.  Clear the DTCs.
  5.  Start the engine, and warm it up until the ECT reaches 75C (167F) or higher.
  6.  Drive the vehicle at 38 mph (60 km/h) or more for at least 10 minutes.
  7.  Change the transmission to the 2nd gear.
  8.  Accelerate the vehicle to 40 mph (64 km/h) or more by depressing the accelerator pedal for at least 10 seconds (Procedure "A").
  9.  Soon after performing procedure "A" above, release the accelerator pedal for at least 4 seconds without depressing the brake pedal, in order to execute fuel-cut control (Procedure "B").
  10.  Allow the vehicle to decelerate until the vehicle speed declines to less than 6 mph (10 km/h) (Procedure "C").
  11.  Repeat procedures from "A" through "C" above at least 3 times in one driving cycle.
  1. Monitor Status
  1.  Check the Readiness Monitor status displayed on the tester.
  2. If the status does not switch to COMPL (complete), make sure that the preconditions have been met and then perform the Drive Pattern again.

A/F SENSOR AND HO2S MONITORS

5. AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) SENSOR HEATER MONITORS (FRONT A/F AND REAR HO2 SENSOR TYPE)

AIR-FUEL RATIO (A/F) AND HEATED OXYGEN (HO2) SENSOR HEATER MONITORS (FRONT A/F AND REAR HO2 SENSOR TYPE)

  1. Preconditions
    The monitor will not run unless:  The MIL is OFF.
  2.  Drive Pattern
  1.  Connect an intelligent tester to the DLC3.
  2.  Turn the ignition switch to the ON position.
  3. Clear the DTCs.
  4.  Start the engine.
  5.  Allow the engine to idle for 10 minutes or more.
  6.  Drive the vehicle at 25 mph (40 km/h) or more for at least 2 minutes.
  1. Monitor Status
  1.  Check the Readiness Monitor status displayed on the tester or scan tool.

    If the status does not switch to COMPL (complete), make sure that the preconditions have been met, and repeat the Drive Pattern

Checking monitor status
The purpose of the monitor result (mode 06) is to allow access to the results for on-board diagnostic monitoring tests of specific components/systems that are not continuously monitored. Examples a ...

Problem symptoms table
HINT: When a malfunction is not confirmed by a DTC (Diagnostic Trouble Code) check and the cause of problem cannot be identified through a basic inspection, troubleshoot according to the priority ...

Other materials:

Installation
1. INSTALL OCCUPANT CLASSIFICATION ECU  Check that the ignition switch is off.  Check that the negative battery (-) terminal is disconnected. CAUTION: After disconnecting the negative battery terminal, wait for at least 90 seconds before starting the operation.   ...

Operation check
1. NOTICE WHEN CHECKING THE FOLLOWING Power door lock/unlock function: The wireless door lock control function operates only when the following 3 conditions are met:  No key is inserted in the ignition key cylinder.  All the doors are closed.  The power door lock sys ...

ECM / PCM Internal Engine Off Timer Performance
DTC SUMMARY DESCRIPTION To ensure the accuracy of the EVAP (Evaporative Emission) monitor values, the soak timer, which is built into the ECM, measures 5 hours (+/- 15 minutes) from when the ignition switch is turned off, before the monitor is run. This allows the fuel to cool down, whic ...

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