Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.
OPERATION
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 between 11 V at idle.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
With GST
Follow the procedure "With CONSULT" above.
Diagnosis Procedure
1.CHECK GROUND CONNECTION
2.CHECK HO2S2 POWER SUPPLY CIRCUIT
3.DETECT MALFUNCTIONING PART
Check the following.
4.CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
5.CHECK HEATED OXYGEN SENSOR 2 HEATER
6.REPLACE HEATED OXYGEN SENSOR 2
Replace malfunctioning heated oxygen sensor 2.
CAUTION:
7.CHECK INTERMITTENT INCIDENT
Component Inspection
1.CHECK HEATED OXYGEN SENSOR 2 HEATER
Check resistance between HO2S2 terminals as per the following.
2.REPLACE HEATED OXYGEN SENSOR 2
CAUTION:
Starting the vehicle
1. After starting the engine, fully depress the
foot brake pedal before moving the shift
lever out of the P (Park) position.
2. Keep the foot brake pedal depressed and
move the shift lever into a driving gear.
3. Release the parking brake and the foot brake
pedal, then gradually start the ...
P0102, P0103 MAF sensor
Description
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is
re ...
Pedal vibration or abs operation sound occurs
Diagnosis Procedure
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when
brake pedal is lightly
depressed (just place a foot on it).However, this is normal.
When shifting gears
When driving on slippery road
During cornering at high spe ...