7GR-FKS ENGINE CONTROL SFI SYSTEM P243011 AIR System Air Flow/Pressure Sensor Circuit Low Bank 1 Circuit Short to Ground P243015 AIR System Air Flow/Pressure Sensor Circuit High Bank 1 Circuit Short to Battery or Open P24301C AIR System Air Flow/Pressure Sensor Circuit Range/Performance Bank 1 Circuit Voltage Out of Range P243511 AIR System Air Flow/Pressure Sensor Circuit Low Bank 2 Circuit Short to Ground P243515 AIR System Air Flow/Pressure Sensor Circuit High Bank 2 Circuit Short to Battery or Open P24351C AIR System Air Flow/Pressure Sensor Circuit Range/Performance Bank 2 Circuit Voltage Out of Range
DESCRIPTION
Refer to DTC P041211.
Refer to DTC P041512.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P243011 | AIR System Air Flow/Pressure Sensor Circuit Low Bank 1 Circuit Short to Ground | While the engine is running, the voltage output of the pressure sensor (for bank 1) is below 0.5 V (1 trip detection logic). | ·
Pressure sensor (emission control valve set (for bank 1)) ·
Open or short in pressure sensor circuit ·
ECM |
Comes on | DTC stored | SAE Code: P2432 |
| P243015 | AIR System Air Flow/Pressure Sensor Circuit High Bank 1 Circuit Short to Battery or Open | While the engine is running, the voltage output of the pressure sensor (for bank 1) is higher than 4.5 V (1 trip detection logic). | ·
Pressure sensor (emission control valve set (for bank 1)) ·
Open or short in pressure sensor circuit ·
ECM |
Comes on | DTC stored | SAE Code: P2433 |
| P24301C | AIR System Air Flow/Pressure Sensor Circuit Range/Performance Bank 1 Circuit Voltage Out of Range | Pressure sensor (for bank 1) indicates a value below 45.6 kPa (6.612 psi), or higher than 135 kPa (19.575 psi) (2 trip detection logic). | ·
Pressure sensor (emission control valve set (for bank 1)) ·
Open or short in pressure sensor circuit ·
ECM |
Comes on | DTC stored | SAE Code: P2431 |
| P243511 | AIR System Air Flow/Pressure Sensor Circuit Low Bank 2 Circuit Short to Ground | While the engine is running, the voltage output of the pressure sensor (for bank 2) is below 0.5 V (1 trip detection logic). | ·
Pressure sensor (emission control valve set (for bank 2)) ·
Open or short in pressure sensor circuit ·
ECM |
Comes on | DTC stored | SAE Code: P2437 |
| P243515 | AIR System Air Flow/Pressure Sensor Circuit High Bank 2 Circuit Short to Battery or Open | While the engine is running, the voltage output of the pressure sensor (for bank 2) is higher than 4.5 V (1 trip detection logic). | ·
Pressure sensor (emission control valve set (for bank 2)) ·
Open or short in pressure sensor circuit ·
ECM |
Comes on | DTC stored | SAE Code: P2438 |
| P24351C | AIR System Air Flow/Pressure Sensor Circuit Range/Performance Bank 2 Circuit Voltage Out of Range | Pressure sensor (for bank 2) indicates a value below 45.6 kPa (6.612 psi), or higher than 135 kPa (19.575 psi) (2 trip detection logic). | ·
Pressure sensor (emission control valve set (for bank 2)) ·
Open or short in pressure sensor circuit ·
ECM |
Comes on | DTC stored | SAE Code: P2436 |
MONITOR DESCRIPTION
The ECM monitors the pressure in the secondary air passage using the pressure sensor located on the emission control valve set in the secondary air injection system. Using this pressure value, the ECM determines whether the secondary air injection system is malfunctioning or not.
If there is a defect in the sensor or the sensor circuit, the voltage level deviates from the normal operating range. The ECM interprets this deviation as a malfunction in the pressure sensor or circuit and stores a DTC.
CONFIRMATION DRIVING PATTERN
- NOTICE:
- ·
If ERROR is displayed on the GTS during the test, stop the engine for 10 minutes, and then try again.
This Secondary Air Injection Check only allows technicians to operate the secondary air injection system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While secondary air injection system operation using the GTS is prohibited, the GTS display indicates the prohibition (WAIT or ERROR). If ERROR is displayed on the GTS during the test, stop the engine for 10 minutes, and then try again.
·Performing the Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating.
·When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
·Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
Start the engine and warm it up.
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Automatic Mode.
Start the engine after the GTS initialization is finished.
Perform the System Check operation by pressing Next.
Perform the following to confirm the secondary air injection system pending DTCs: Press the Exit.
Enter the following menus: Powertrain / Engine / DTC.
Read pending DTCs.
- HINT:
- ·
If a pending DTC is output, the system is malfunctioning.
·If a pending DTC is not output, perform the following procedure.
After Secondary Air Injection Check is completed, check All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P243011, P243015, P24301C, P243511, P243515 or P24351C.
Check the DTC judgment result.
| Tester 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 shows NORMAL, the system is normal.
·If the judgment result shows ABNORMAL, the system has a malfunction.
·If the judgment result shows INCOMPLETE, perform the Confirmation Driving Pattern and the DTC judgment result again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- HINT:
- ·
Refer to "Data List / Active Test" [Air Pump Pressure (Absolute) Bank 1 and Air Pump Pressure (Absolute) Bank 2].
·Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
·Bank 2 refers to the bank that does not include the No. 1 cylinder.
·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 Emission Control Valve Set) |
| *b | Bank 1 |
| *c | Bank 2 |
- HINT:
-
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
Disconnect the emission control valve set connectors.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition E30-2 (VC) - E30-4 (E2) Ignition switch ON 4.5 to 5.5 V E31-2 (VC2) - E31-4 (E22) Ignition switch ON 4.5 to 5.5 V E30-3 (AIP) - E30-4 (E2) Ignition switch ON 3.0 to 5.5 V E31-3 (AIP2) - E31-4 (E22) Ignition switch ON 3.0 to 5.5 V
Turn the ignition switch off and wait for at least 30 seconds.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E30-4 (E2) - Body ground Ignition switch off Below 1 Ω E31-4 (E22) - Body ground Ignition switch off Below 1 Ω E30-2 (VC) - E30-3 (AIP) Ignition switch off 171 to 189 kΩ E31-2 (VC2) - E31-3 (AIP2) Ignition switch off 171 to 189 kΩ
- Result:
Result OK NG
OK
NG
Disconnect the emission control valve set connectors.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E30-3 (AIP) - A1-23 (AIP) Always Below 1 Ω E30-2 (VC) - A1-23 (VCAI) Always Below 1 Ω E30-4 (E2) - A1-22 (EAIP) Always Below 1 Ω E31-3 (AIP2) - A1-30 (AIP2) Always Below 1 Ω E31-2 (VC2) - A1-23 (VCAI) Always Below 1 Ω E31-4 (E22) - A1-22 (EAIP) Always Below 1 Ω E30-3 (AIP) or A1-23 (AIP) - Body ground and other terminals Always 10 kΩ or higher E30-2 (VC) or A1-23 (VCAI) - Body ground and other terminals Always 10 kΩ or higher E31-3 (AIP2) or A1-30 (AIP2) - Body ground and other terminals Always 10 kΩ or higher E31-2 (VC2) or A1-23 (VCAI) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Result OK NG
OK
NG