Description
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sensor.
The sensor element of the A/F sensor 1 is composed an electrode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse via the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocarbon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of about 800C (1,472F).
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
2.PERFORM DTC CONFIRMATION PROCEDURE
Diagnosis Procedure
1.CHECK GROUND CONNECTION
2.RETIGHTEN A/F SENSOR 1 AND HEATED OXYGEN SENSOR 2
Loosen and retighten the A/F sensor 1 and heated oxygen sensor 2.
3.CHECK FOR EXHAUST GAS LEAK
4.CHECK FOR INTAKE AIR LEAKAGE
5.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
6.CHECK HARNESS CONNECTOR
7.CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
8.DETECT MALFUNCTIONING PART
Check the following.
9.CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
10.CHECK A/F SENSOR 1 HEA
11.CHECK HEATED OXYGEN SENSOR 2
12.CHECK INTERMITTENT INCIDENT
13.REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1.
CAUTION:
14.CONFIRM A/F ADJUSTMENT DATA
With CONSULT
15.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
Clear the mixture ratio self-learning value.
16.CONFIRM A/F ADJUSTMENT DATA
With CONSULT
CAN communication system
System Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent error
detection ability. Many electronic
control units are equipped onto each vehicle, a ...
Steering wheel
Inspection
INSTALLATION CONDITION
Check installation conditions of steering gear assembly, front
suspension assembly, axle and steering column assembly.
Check if movement exists when steering wheel is moved up and down,
to the left and right and to the axial direction.
Check steering ...
Steering column
Disassembly and Assembly
The steering column assembly without electric motor is not serviceable and
must be replaced as an assembly.
With Electric Motor
Steering column assembly
Telescope motor
Telescope motor link bracket
Tilt motor
Tilt motor bolt cap
DISASSEMBLY
Remo ...