M20D-FKS ENGINE CONTROL SFI SYSTEM P223711 A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground P223712 A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Battery P223713 A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Open P223716 A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Below Threshold P223717 A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Above Threshold P22371B A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Above Threshold P225111 O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground P225112 O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Battery
DESCRIPTION
Refer to DTC P003012.
- HINT:
-
Although the DTC titles say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 1).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P223711 | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground | The A1A+ voltage is 1.22 V or less for 5 seconds or more (2 trip detection logic). | ·
Short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2238 |
| P223712 | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Battery | The A1A+ voltage is higher than 3.46 V for 5 seconds or more (2 trip detection logic). | ·
Open or short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2239 |
| P223713 | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Open | An open or ground short in the circuit between terminals A1A+ and A1A- of the air fuel ratio sensor (sensor 1) while the engine is running (2 trip detection logic). | ·
Open or short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2237 |
| P223716 | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Below Threshold | Difference between terminals A1A+ and A1A- is 0.2 V or less for 5 seconds or more (2 trip detection logic). | ·
Open or short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2238 |
| P223717 | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Above Threshold | Difference between terminals A1A+ and A1A- is higher than 1.06 V for 5 seconds or more (2 trip detection logic). | ·
Open or short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2239 |
| P22371B | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Above Threshold | The air fuel ratio sensor (sensor 1) impedance is higher than 63 Ω (2 trip detection logic). | ·
Open or short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2238 |
| P225111 | O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground | The A1A- voltage is 1.09 V or less for 5 seconds or more (2 trip detection logic). | ·
Short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2252 |
| P225112 | O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Battery | The A1A- voltage is higher than 2.91 V for 5 seconds or more (2 trip detection logic). | ·
Open or short in air fuel ratio sensor (sensor 1) circuit ·
Air fuel ratio sensor (sensor 1) ·
ECM |
Comes on | DTC stored | SAE: P2253 |
MONITOR DESCRIPTION
These DTCs are stored when there is an open or short in the air fuel ratio sensor (sensor 1) circuit, or the air fuel ratio sensor (sensor 1) output value is abnormal. The voltage of the air fuel ratio sensor (sensor 1) is monitored while the ignition switch is ON, and the impedance (impedance is an electrical term that indicates the difficulty of flow of current) is checked while engine running. If the voltage of the air fuel ratio sensor (sensor 1) is outside the normal range, or the impedance is outside the normal range, the ECM illuminates the MIL and stores a DTC.
MONITOR STRATEGY
| Required Sensors/Components | Air fuel ratio sensor (sensor 1) |
| Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
- HINT:
- ·
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Start the engine and wait 5 minutes or more [A].
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes [B].
Read the pending DTCs.
- HINT:
- ·
If a pending DTC is output, the system is malfunctioning.
·If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P223711, P223712, P223714, P223716, P223717, P22371A, P225111 or P225112.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
- HINT:
- ·
If the judgment result is NORMAL, the system is normal.
·If the judgment result is ABNORMAL, the system has a malfunction.
·If the judgment result is INCOMPLETE, idle the engine for 5 minutes and check the DTC judgment result again.
·[A] to [B]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
·When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
-
Inspect the fuses for circuits related to this system before performing the following procedure.
- HINT:
- ·
Sensor 1 refers to the sensor closest to the engine assembly.
·Sensor 2 refers to the sensor farthest away from the engine assembly.
·Refer to "Data List / Active Test" [A/F (O2) Sensor Current B1S1].
·Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
| *a | Front view of wire harness connector
(to Air Fuel Ratio Sensor (Sensor 1)) |
- HINT:
-
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
Disconnect the air fuel ratio sensor (sensor 1) connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition C28-3 (A1A+) - Body ground Ignition Switch ON 2.8 to 3.0 V C28-4 (A1A-) - Body ground Ignition Switch ON 2.3 to 2.7 V C28-3 (A1A+) - C28-4 (A1A-) Ignition Switch ON 0.1 to 0.7 V
- HINT:
-
Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).
- Result:
Proceed to OK NG
OK
NG
Disconnect the air fuel ratio sensor (sensor 1) connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C28-1 (HA1A) - C71-10 (HA1A) Always Below 1 Ω C28-3 (A1A+) - C71-169 (A1A+) Always Below 1 Ω C28-4 (A1A-) - C71-168 (A1A-) Always Below 1 Ω C28-1 (HA1A) or C71-10 (HA1A) - Body ground and other terminals Always 10 kΩ or higher C28-3 (A1A+) or C71-169 (A1A+) - Body ground and other terminals Always 10 kΩ or higher C28-4 (A1A-) or C71-168 (A1A-) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG