Toyota RAV4 manuals

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:

(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.

(c) 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.

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:

Voice Recognition Difficulty
INSPECTION PROCEDURE 1 CHECK CONDITION Check if the system's voice recognition level is low by using only one particular voice. OK: System's voice recognition level is low with any voice. 2 CHECK MAP DISC Check that the map disc is not deformed or cracked. OK: No deformation ...

Auto Up / Down Function does not Operate
DESCRIPTION If the AUTO UP/DOWN function does not operate, any of the following troubles may be the cause:  When the PWR fuse or the power window relay (Marking: PWR) is replaced with new ones, or when the battery terminal and the connector of the power window master switch are d ...

Inspection
1. INSPECT NO. 1 VALVE ROCKER ARM SUBASSEMBLY (a) Turn the roller by hand to check that it turns smoothly. HINT: If the roller does not turn smoothly, replace the valve rocker arm sub-assembly. 2. INSPECT VALVE LASH ADJUSTER ASSEMBLY NOTICE: Keep the lash adjuster free of dirt ...

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