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Toyota Sienna Service Manual: Catalyst monitor (active air-fuel ratio control type)

Toyota Sienna Service Manual / Engine / 2Gr-fe engine control system / Sfi system / Readiness monitor drive pattern / Catalyst monitor (active air-fuel ratio control type)

Catalyst monitor (active air-fuel ratio control type)

(a) Preconditions

The monitor will not run unless:

(b) 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.

(c) 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.

Purpose of readiness tests
The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emissionrelated components, and indicate any detected abnormalities with DTCs (Diagnostic Trouble Codes). ...

Evap monitor (key-off type)
(a) Preconditions The monitor will not run unless: The fuel tank is less than 90% full. The altitude is less than 8000 ft (2450 m). The vehicle is stationary. The engine coolant temperature ...

Other materials:

SRS Warning Light does not Come ON
DESCRIPTION WIRING DIAGRAM INSPECTION PROCEDURE 1 CHECK BATTERY Measure the voltage of the battery. Standard voltage: 11 to 14 V 2 CHECK CONNECTORS Turn the ignition switch to the LOCK position.  Disconnect the negative (-) terminal cable from the battery, and wait for at le ...

Yaw rate sensor check (when using sst check wire)
(a) Check the zero point voltage of the yaw rate sensor. (1) Keep the vehicle in a stationary condition on a level surface for 1 second or more. (b) Check the output of the yaw rate sensor. (1) Move the shift lever to the D position, drive the vehicle at a speed of approximately 3 mph (5 ...

Check mode procedure
HINT: Check mode has a higher sensitivity to malfunctions and can detect malfunction that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1-trip detection logic.  Dtc check (check mode) HINT: I ...

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