Toyota Yaris: Air Fuel Ratio Sensor (for Sensor 2) / Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the No. 2 air fuel ratio sensor removal/installation are shown below.
Necessary Procedure After Parts Removed/Installed/Replaced
Replacement Part or Procedure | Necessary Procedure | Effect/Inoperative when not Performed | Link |
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Replacement of air fuel ratio sensor (sensor 2)
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Gas leak from exhaust system is repaired
| Inspection after repair | -
Poor idle, etc.
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Engine start function, etc.
|
|
CAUTION:
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When the engine is hot, do not touch high-temperature areas such as the engine or exhaust pipe.
-
Touching high-temperature areas such as the engine and exhaust pipe could result in burns.
PROCEDURE
1. REMOVE CENTER NO. 4 ENGINE UNDER COVER
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2. REMOVE CENTER FRONT FLOOR BRACE
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3. REMOVE CENTER NO. 1 FLOOR BRACE
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4. REMOVE NO. 2 AIR FUEL RATIO SENSOR
(a) Disconnect the No. 2 air fuel ratio sensor connector. | |
(b) Disengage the 3 wire harness clamps.
(c) Using SST, remove the No. 2 air fuel ratio sensor from the front exhaust pipe assembly. SST: 09224-00012 NOTICE: If the No. 2 air fuel ratio sensor has been struck or dropped, replace it. | |
COMPONENTS ILLUSTRATION
*1 NO. 2 AIR FUEL RATIO SENSOR *2 CENTER NO. 1 FLOOR BRACE *3 CENTER FRONT FLOOR BRACE *4 CENTER NO. 4 ENGINE UNDER COVER
N*m (kgf*cm, ft...
INSPECTION PROCEDURE 1. INSPECT NO. 2 AIR FUEL RATIO SENSOR (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition D109-1(HA1B) - D109-2(+B) 20°C (68°F) 1...
Other information:
PARTS LOCATION ILLUSTRATION
*1 REAR WINDOW DEFOGGER WIRE (BACK DOOR GLASS) *2 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 ENGINE ROOM JUNCTION BLOCK ASSEMBLY - ECU-IGP NO. 3 FUSE ILLUSTRATION
*1 AIR CONDITIONING CONTROL ASSEMBLY *2 AIR CONDITIONING AMPLIFIER ASSEMBLY *3 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *4 POWER DISTRIBUTION BOX ASSEMBLY - ECU-B NO...
DESCRIPTION If the air conditioning system cannot be operated using the air conditioning control assembly, the following factors may be the cause. Symptom Factor Air conditioning system cannot be operated using air conditioning control assembly
(With the exception of the switch indicators, no inputs are reflected when other switches operated)
LIN communication malfunction between air conditioning amplifier assembly and air conditioning control assembly
Short to +B or ground in air conditioning amplifier assembly circuit
Air conditioning amplifier assembly malfunction
Air conditioning control assembly malfunction
Harness or connector
WIRING DIAGRAM
CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure...
Categories
The fuel gauge shows approximately how much fuel is remaining in
the tank when the ignition is switched ON. We recommend keeping
the tank over 1/4 full.

Full
1/4 Full
Empty
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