Suzuki 2006 SX4, Service Manual

Page: 167 / 1478

Engine General Information and Diagnosis: 1A-123
DTC P2195 / P2196: O2 Sensor Signal Stuck Lean / Stuck Rich (Sensor-1, Bank-1)
S6RW0C1104074
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
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and a tester, on a level road.
NOTE
Check to make sure that the following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• Intake air temperature at engine start: –10
°
C (14
°
F) to 80
°
C (176
°
F)
• Intake air temperature: –10
°
C (14
°
F) to 70
°
C (158
°
F)
• Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
• Engine coolant temperature: 70
°
C (158
°
F) to 150
°
C(302
°
F)
• The following DTCs are not detected: ECT sensor, IAT sensor, MAF sensor and barometric pressure
sensor
1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Drive vehicle at 40 mph (60 km/h) or higher.
5) Keep above vehicle speed for 4 min. or more. (Throttle valve opening is kept constant in this step.)
6) Check DTC and pending DTC.
4 Wire harness check
1) Check APP sensor (main and sub) circuit for condition.
For APP sensor (main) circuit, refer to Step 4 of “DTC
P2122 / P2123: Throttle / Pedal Position Sensor / Switch
“D” Circuit Low / High”.
For TP sensor (sub) circuit, refer to Step 4 of “DTC
P2127 / P2128: Throttle / Pedal Position Sensor / Switch
“E” Circuit Low / High Input”.
Is it in good condition?
Substitute a known-
good ECM and recheck. Repair or replace.
Step Action Yes No
DTC detecting condition Trouble area
DTC P2195:
A/F sensor signal is higher than 1.15 for 10 sec. even though HO2S
voltage is higher than 0.2 V while vehicle is running after warmed up.
(2 driving cycle detection logic)
DTC P2196:
A/F sensor signal is lower than 0.85 for 10 sec. even though HO2S
voltage is lower than 0.7 V while vehicle is running after warmed up.
(2 driving cycle detection logic)
• A/F sensor and/or its circuit
• ECM