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:

Disassembly
1. REMOVE NO. 1 HEADLIGHT BULB (HALOGEN HEADLIGHT)  Turn in the direction indicated by the arrow and remove the No. 1 headlight bulb. 2. REMOVE DISCHARGE HEADLIGHT BULB (DISCHARGE HEADLIGHT) Turn in the direction indicated by the arrow and disconnect the socket. ...

Reassembly
1. INSTALL LIGHT CONTROL ECU (DISCHARGE HEADLIGHT)  Install a new headlight leveling motor base packing.  Install the headlight leveling motor assembly as shown in the illustration. Connect the connector with the claw Install the light control ECU with the 2 ...

Terminals of ecu
1. Terminal of ECU (*1): Models with dynamic laser cruise control (*2): 2WD model 2. Terminal Inspection (a) Disconnect the connector and measure the voltage or resistance on the wire harness side. HINT: Voltage cannot be measured with the connector connected to the skid control ECU ...

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