1A-105 Engine General Information and Diagnosis:
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Run engine at idle speed for 1 min. or more.
5) Check DTC and pending DTC.
DTC Troubleshooting
NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions For DTC Troubleshooting: ”.
DTC P0133: O2 Sensor (HO2S) Circuit Slow Response (Sensor-1)
S5JB0A1104033
Wiring Diagram
Refer to “DTC P0131 / P0132 / P0134: O2 Sensor (HO2S) Circuit Low Voltage / High Voltage / No Activity Detected
(Sensor-1): ”.
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed?
Go to Step 2. Go to “Engine and
Emission Control
System Check: ”.
2 Is there DTC(s) other than A/F sensor? Go to applicable DTC
diag. flow.
Go to Step 3.
3 A/F sensor signal check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Warm up engine to normal operating temperature and
keep it at 2000 r/min. for 60 sec.
3) Repeat racing engine (Repeat depressing accelerator
pedal 5 to 6 times continuously to enrich A/F mixture and
take foot off from pedal to enlean it).
Does A/F sensor output current between –0.2 mA and 0.2
mA?
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”.
Go to Step 4.
4 A/F sensor circuit check
1) Disconnect connector from A/F sensor and ECM with
ignition switch turned OFF.
2) Check for proper connection of each A/F sensor circuit
terminal to A/F sensor connector and to ECM connector.
3) If connections are OK, check A/F sensor circuit for the
following.
• Resistance of each sensing circuit wire of A/F sensor
between A/F sensor connector and ECM connector is
less than 2 Ω
• Resistance between sensing circuit wires of A/F
sensor connector are infinity
• Resistance between each sensing circuit wire of A/F
sensor connector and vehicle body ground is infinity
• Voltage of between each sensing circuit wire of A/F
sensor connector and vehicle body ground is 0 V with
ignition switch tuned ON
Is it in good condition?
Replace A/F sensor. Repair or replace
defective wire.
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