Suzuki 2006 SX4, Service Manual

Page: 119 / 1478

Engine General Information and Diagnosis: 1A-75
DTC P0133: O2 Sensor Circuit Slow Response / Performance (Sensor-1, Bank-1)
S6RW0C1104027
Wiring Diagram
Refer to “DTC P0030: HO2S Heater Control Circuit (Sensor-1, Bank-1)”.
A/F Sensor Description
Refer to “A/F Sensor Description”.
DTC Detecting Condition and Trouble Area
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 and
recheck. If this DTC is
detected again,
substitute a known-
good ECM. Repair or replace
defective wire.
Step Action Yes No
DTC detecting condition Trouble area
Ratio between integrated value of A/F sensor output variation and
integrated value of short term fuel trim variation is more than
specification while vehicle is running.
(2 driving cycle detection logic, monitoring once per driving cycle) • A/F sensor