Page 1299 of 2771

DTC P0133 A/F SENSOR 1
EC-225
< SERVICE INFORMATION >
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DTC P0133 A/F SENSOR 1
Component DescriptionINFOID:0000000001702726
The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode 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 through 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 hydrocar-
bon 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 800°C
(1,472°F).
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000001702727
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001702728
To judge the malfunction of air fuel ratio (A/F) sensor 1, this diagnosis measures response time of the A/F sig-
nal computed by ECM from the air fuel ratio (A/F) sensor 1 signal. The time is compensated by engine operat-
ing (speed and load), fuel feedback control constant, and the air fuel ratio (A/F) sensor 1 temperature index.
Judgment is based on whether the compensated time (the A/F sensor 1 signal cycling time index) is inordi-
nately long or not.
DTC Confirmation ProcedureINFOID:0000000001702729
NOTE:
PBIB3353E
PBIB3354E
MONITOR ITEM CONDITION SPECIFICATION
A/F SEN1 (B1) • Engine: After warming upMaintaining engine speed at 
2,000 rpmFluctuates around 2.2V
DTC No.Trouble diag-
nosis nameDTC detecting condition Possible Cause
P0133
0133Air fuel ratio 
(A/F) sensor 1 
circuit slow re-
sponseThe response of the A/F signal computed by ECM from 
A/F sensor 1 signal takes more than the specified time.• Harness or connectors
[Air fuel ratio (A/F) sensor circuit is open 
or shorted.]
• Air fuel ratio (A/F) sensor 1
• Air fuel ratio (A/F) sensor heater 1
• Fuel pressure
• Fuel injector
• Intake air leaks
• Exhaust gas leaks
•PCV
• Mass air flow sensor 
     
        
        Page 1855 of 2771

GI-4
< SERVICE INFORMATION >
PRECAUTIONS
• Use hand tools, power tools (disassembly only) and recommended
special tools where specified for safe and efficient service repairs.
• When repairing the fuel, oil, water, vacuum or exhaust systems,
check all affected lines for leaks.
• Before servicing the vehicle:
Protect fenders, upholstery and carpeting with appropriate covers.
Take caution that keys, buckles or buttons do not scratch paint.
WARNING:
To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness
connectors which are related to the engine control system and TCM (transmission control module)
system. The connectors should be disconnected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and AT sections.
Precaution for Three Way CatalystINFOID:0000000001702425
If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To
prevent this, follow the instructions.
• Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst.
• When checking for ignition spark or measuring engine compression, make tests quickly and only when nec-
essary.
• Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to the
catalyst.
Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three
way catalyst.
Precaution for Fuel (Unleaded Regular Gasoline Recommended)INFOID:0000000001702426
Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (Research
octane number 91).
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Do not use E-85
fuel (85% fuel ethanol, 15% unleaded gasoline) unless the vehicle is specifically designed for E-85 fuel
(i.e. Flexible Fuel Vehicle - FFV models). Using a fuel other than that specified could adversely affect
the emission control devices and systems, and could also affect the warranty coverage validity.
PBIC0190E
SGI234 
     
        
        Page 1858 of 2771

HOW TO USE THIS MANUAL
GI-7
< SERVICE INFORMATION >
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PHOW TO USE THIS MANUAL
DescriptionINFOID:0000000001702431
This volume explains “Removal, Disassembly, Installation, Inspection and  Adjustment” and “Trouble Diag-
noses”.
Te r m sINFOID:0000000001702432
• The captions WARNING and CAUTION warn you of steps that must be followed to prevent personal injury
and/or damage to some part of the vehicle.
WARNING indicates the possibility of personal injury if instructions are not followed.
CAUTION indicates the possibility of component damage if instructions are not followed.
BOLD TYPED STATEMENTS except WARNING and CAUTION give you helpful information.
Standard value:Tolerance at inspection and adjustment.
Limit value:The maximum or minimum limit value that should not be exceeded at inspection and adjustment.
UnitsINFOID:0000000001702433
• The UNITS given in this manual are primarily expressed as the SI UNIT (International System of Unit), and
alternatively expressed in the metric system and in the yard/pound system.
Also with regard to tightening torque of bolts and nuts, there are descriptions both about range and about the
standard tightening torque.
“Example”
Range
Standard
ContentsINFOID:0000000001702434
•ALPHABETICAL INDEX is provided at the end of this manual so that you can rapidly find the item and page
you are searching for.
•A QUICK REFERENCE INDEX, a black tab (e.g.  ) is provided on the first page. You can quickly find the
first page of each section by matching it to the section's black tab.
•THE CONTENTS are listed on the first page of each section.
•THE TITLE is indicated on the upper portion of each page and shows the part or system.
•THE PAGE NUMBER of each section consists of two or three letters which designate the particular section
and a number (e.g. “BR-5”).
•THE SMALL ILLUSTRATIONS show the important steps such as inspection, use of special tools, knacks of
work and hidden or tricky steps which are not shown in the previous large illustrations.
Assembly, inspection and adjustment procedures for the complicated units such as the automatic transaxle
or transmission, etc. are presented in a step-by-step format where necessary. Outer Socket Lock Nut : 59 - 78 N·m (6.0 - 8.0 kg-m, 43 - 58 ft-lb)
Drive Shaft Installation Bolt: 44.3 N·m (4.5 kg-m, 33 ft-lb) 
     
        
        Page 2491 of 2771

PG-58
< SERVICE INFORMATION >
HARNESS
Wiring Diagram Codes (Cell Codes)
INFOID:0000000001704709
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
D3 D404 W/3 : Rear wiper motor
D4 D405 W/4 : Back door lock assembly
D4 D406 W/2 : Back door request switch
E2 D407 W/2 : High mounted stop lamp
D4 D408 BR/2 : Back door opener switch
E4 D409 B/1 : Condenser-1
C2 D410 — : Body ground
E3 D411 B/1 : Condenser-1
E1 D412 B/1 : Rear window defogger (+)
C2 D413 B/1 : Rear window defogger (-)
F3 D414 — : Body ground
Code Section Wiring Diagram Name
 ABS BRC  Anti-lock Brake System
 A/C,M MTC  Manual Air Conditioner
 APPS1 EC  Accelerator Pedal Position Sensor
 A/F EC  Air Fuel Ratio Sensor 1
 A/FH EC  Air Fuel Ratio Sensor 1 Heater
 APPS2 EC  Accelerator Pedal Position Sensor
 APPS3 EC  Accelerator Pedal Position Sensor
 ASC/BS EC  ASCD Brake Switch
 ASC/SW EC  ASCD Steering Switch
 ASCBOF EC  ASCD Brake Switch
 ASCIND EC  ASCD Indicator
 AT/IND DI  A/T Indicator Lamp
 AUDIO AV  Audio
 BACK/L LT  Back-up Lamp
 BA/FTS AT  A/T Fluid Temperature Sensor and TCM Power Supply
 B/DOOR BL  Back Door Opener
 BRK/SW EC  Brake Switch
 CAN AT  CAN Communication Line 
 CAN CVT  CAN Communication Line 
 CAN EC  CAN Communication Line
 CAN LAN  CAN System
 CHARGE SC  Charging System
 CHIME DI  Warning Chime 
 COOL/F EC  Cooling Fan Control
 COMBSW LT  Combination Switch
 CVTIND DI  CVT Indicator Lamp
 D/LOCK BL  Power Door Lock
 DEF GW  Rear Window Defogger
 DTRL LT  Headlamp - With Daytime Light System
 ECTS EC  Engine Coolant Temperature Sensor
 ENGSS AT  Engine Speed Signal
 EPS STC  Electronic Controlled Power Steering
 ETC1 EC  Electric Throttle Control Function 
     
        
          
   
    
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