CHECK HARNESS AND CONNECTOR (PRESSURE SENSOR - ECM)
INSPECT EMISSION CONTROL VALVE SET (PRESSURE SENSOR)
DTC P2431 Secondary Air Injection System Air Flow / Pressure Sensor Circuit Range / Performance Bank1 |
DTC P2432 Secondary Air Injection System Air Flow / Pressure Sensor Circuit Low Bank1 |
DTC P2433 Secondary Air Injection System Air Flow / Pressure Sensor Circuit High Bank1 |
DTC P2436 Secondary Air Injection System Air Flow / Pressure Sensor Circuit Bank2 |
DTC P2437 Open in Secondary Air Injection System Air Flow / Pressure Sensor Circuit Bank2 |
DTC P2438 Short in Secondary Air Injection System Air Flow / Pressure Sensor Circuit Bank2 |
DESCRIPTION
Refer to DTC P0412 (LandCruiser RM0000012FY05WX_01.html).Refer to DTC P0416 (LandCruiser RM00000460H01JX_01.html).
| DTC No. | DTC Detection Condition | Trouble Area |
| P2431 P2436 | Pressure sensor indicates a value below 45.6 kPa (342 mmHg), or higher than 135 kPa (1013 mmHg) for 5 seconds or more (2 trip detection logic). |
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| P2432 P2437 | While the engine is running, voltage output of the pressure sensor is below 0.5 V (1 trip detection logic). |
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| P2433 P2438 | While the engine is running, voltage output of the pressure sensor is higher than 4.5 V (1 trip detection logic) |
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MONITOR DESCRIPTION
The ECM monitors the pressure inside the air passage of the secondary air injection system using the pressure sensor of the air switching valve assembly. If the ECM detects a malfunction in the sensor or sensor circuit, it stores a DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. 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.
| 1.CHECK HARNESS AND CONNECTOR (PRESSURE SENSOR - ECM) |
Disconnect the pressure sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition C44-3 (AIP) - C35-15 (AIP) Always Below 1 Ω C44-2 (VC) - C35-13 (VCAP) Always Below 1 Ω C44-4 (E2) - C35-14 (EAIP) Always Below 1 Ω C45-3 (AIP2) - C35-16 (AIP2) Always Below 1 Ω C45-2 (VC2) - C35-13 (VCAP) Always Below 1 Ω C45-4 (E22) - C35-14 (EAIP) Always Below 1 Ω
- Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition C44-3 (AIP) or C35-15 (AIP) - Body ground Always 10 kΩ or higher C44-2 (VC) or C35-13 (VCAP) - Body ground Always 10 kΩ or higher C45-3 (AIP2) or C35-16 (AIP2) - Body ground Always 10 kΩ or higher C45-2 (VC2) or C35-13 (VCAP) - Body ground Always 10 kΩ or higher
Reconnect the pressure sensor connector.
Reconnect the ECM connector.
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| OK | |
| 2.INSPECT EMISSION CONTROL VALVE SET (PRESSURE SENSOR) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Air Pump Pressure (Absolute) or Air Pump2 pressure (Absolute).
Check the pressure displayed on the GTS.
- Standard pressure:
- 45 to 135 kPa
- HINT:
- The GTS displays the air pump pressure as an absolute pressure.
Result Result Proceed to OK A NG (for Bank 1) B NG (for Bank 2) C
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| A | ||
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