Toyota Sienna Service Manual: Air-fuel ratio (a/f) and heated oxygen (ho2) sensor heater monitors (front a/f and rear ho2 sensor type)

Toyota Sienna Service Manual / Engine / 2Gr-fe engine control system / Sfi system / Readiness monitor drive pattern / 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)

(a) Preconditions

The monitor will not run unless:

The MIL is OFF.

(b) 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) 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.

A/F sensor and ho2s monitors

(a) Preconditions The monitor will not run unless: 2 minutes or more have elapsed since the engine was started. The Engine Coolant Temperature (ECT) is 75°C (167°F) or more. Cumulative ...

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:

Hitch
Trailer hitch assemblies have different weight capacities. Toyota recommends the use of Toyota hitch/bracket for your vehicle. For details, contact your Toyota dealer. If you wish to install a trailer hitch, contact your Toyota dealer. Use only a hitch that conforms to the gross trailer w ...

Removal
1. REMOVE REAR WINDOW SIDE GARNISH ASSEMBLY 2. REMOVE REAR DOOR WINDOW FRAME SUBASSEMBLY 3. REMOVE SIDE TRIM BOARD COVER REAR 4. REMOVE REAR DOOR TRIM BOARD SUBASSEMBLY 5. REMOVE REAR DOOR GLASS RUN 6. REMOVE SLIDE DOOR WINDOW ASSEMBLY 7. REMOVE REAR DOOR GLASS WEATHERSTRIP Put pro ...

Installation
HINT: Install the RH side by the same procedures with LH side. 1. INSTALL FRONT SPEED SENSOR LH (a) Install the speed sensor front LH with the bolt. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) NOTICE: Keep the tip of the front speed sensor LH. (b) Install the sensor harness clamps with th ...