Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
DTC P2226 Barometric Pressure Circuit
DTC P2228 Barometric Pressure Circuit Low Input
DTC P2229 Barometric Pressure Circuit High Input
DESCRIPTION
To detect atmospheric pressure, the built-in atmospheric pressure sensor in the ECM is used. Using the atmospheric pressure, the ECM corrects the injection volume, timing and duration, and adjusts the common rail internal fuel pressure in order to optimize engine combustion.
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Engine switch on (IG) for 1 second | Atmospheric pressure sensor voltage is 1.4 V or less, or 4.0 V or higher for 0.5 seconds. (1 trip detection logic) | ECM |
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Engine switch on (IG) for 1 second | Atmospheric pressure sensor voltage is 1.4 V or less for 0.5 seconds. (1 trip detection logic) | ECM |
| DTC Detection Drive Pattern | DTC Detection Condition | Trouble Area |
| Engine switch on (IG) for 1 second | Atmospheric pressure sensor voltage is 4.0 V or higher for 0.5 seconds. (1 trip detection logic) | ECM |
| DTC No. | Data List |
| P2226 P2228 P2229 | Atmosphere Pressure MAP |
- HINT:
When the engine switch is on (IG), the intake manifold pressure, "MAP", is approximately equal to atmospheric pressure.
Under standard atmospheric pressure conditions, the output of the atmospheric pressure sensor is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather (high atmospheric pressure, low atmospheric pressure).
If DTC P2226, P2228 and/or P2229 is stored, the following symptoms may appear:
Misfire
Combustion noise
Black smoke
White smoke
INSPECTION PROCEDURE
- NOTICE:
After replacing the ECM, the new ECM needs registration () and initialization ().
After replacing the fuel supply pump assembly, the ECM needs initialization ().
After replacing an injector assembly, the ECM needs registration ().
- 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, and other data from the time the malfunction occurred.
| 1.REPLACE ECM |
Replace the ECM ().
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| 2.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Clear the DTCs ().
Turn the engine switch off and wait for 30 seconds or more.
Turn the engine switch on (IG) and wait for 1 second or more.
Confirm that the DTC is not output again.
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