DTC P0105 Manifold Absolute Pressure / Barometric Pressure Circuit
DTC P0107 Manifold Absolute Pressure / Barometric Pressure Circuit Low Input
DTC P0108 Manifold Absolute Pressure / Barometric Pressure Circuit High Input
DESCRIPTION
The manifold absolute pressure sensor detects the intake manifold pressure by using its built-in sensor unit. The ECM determines the basic injection duration and injection advance timing based on the voltage output by the manifold absolute pressure sensor.
The manifold absolute pressure sensor monitors the absolute pressure inside the intake manifold (default is 0 kPa (0 mmHg, 0 in.Hg)). As a result the ECM controls the air-fuel ratio at the proper level under any driving conditions, and fuel control accuracy is not influenced by fluctuations in the atmospheric pressure due to factors such as high altitude, etc.
Toyota fault code list P0105 P0107 P0108
DTC No. | DTC Detection Condition | Trouble Area |
P0105 P0107 P0108 |
Open or short in manifold absolute pressure sensor circuit for 0.8 seconds or more (1 trip detection logic) |
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УКАЗАНИЕ:
When DTC P0105, P0107, or P0108 is detected, check the intake manifold pressure by entering the following menus on the intelligent tester: Powertrain / Engine and ECT / Data List / MAP.
Intake Manifold Pressure | Malfunction |
Approximately 0 kPa | Short in PIM circuit |
250 kPa (1,875 mmHg, 73.8 in.Hg) or more |
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WIRING DIAGRAM
INSPECTION PROCEDURE
ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration and initialization.
УКАЗАНИЕ:
If DTCs relating to different systems are output, and they share terminal E2 as their ground, check this ground circuit first.
1.READ VALUE OF MANIFOLD ABSOLUTE PRESSURE SENSOR |
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Connect the intelligent tester to the DLC3.
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Turn the ignition switch on (IG) and turn the tester ON.
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Enter the following menus: Powertrain / Engine and ECT / Data List / MAP and Atmosphere Pressure.
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Read the value.
OK:
Condition MAP Value No pressure applied Same as atmospheric pressure Vacuum applied Becomes vacuum Pressure applied Becomes pressurized
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NG | |
2.CHECK WIRE HARNESS (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM) |
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Disconnect the B45 manifold absolute pressure sensor connector.
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Disconnect the B32 ECM connector.
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Measure the resistance of the wire harness side connectors.
Standard resistance:
Tester Connection Specified Condition B45-2 (PIM) - B32-117 (PIM) Below 1 ? B45-3 (VC) - B32-71 (VCPM) Below 1 ? B45-1 (E) - B32-94 (EPIM) Below 1 ? B45-2 (PIM) or B32-117 (PIM) - Body ground 10 k? or higher B45-3 (VC) or B32-71 (VCPM) - Body ground 10 k? or higher B45-1 (E) or B32-94 (EPIM) - Body ground 10 k? or higher
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Reconnect the manifold absolute pressure sensor connector.
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Reconnect the ECM connector.
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OK | |
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3.CHECK MANIFOLD ABSOLUTE PRESSURE TERMINAL VOLTAGE (VC TERMINAL) |
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Disconnect the B45 manifold absolute pressure sensor connector.
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Turn the ignition switch on (IG).
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Measure the voltage of the manifold absolute pressure sensor.
Standard voltage:
Tester Connection Specified Condition B45-3 (VC) - B45-1 (E) 4.5 to 5.5 V
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Reconnect the manifold absolute pressure sensor connector.
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OK | |
4.INSPECT TURBOCHARGER SUB-ASSEMBLY |
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Check the turbocharger sub-assembly.
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OK | |
5.INSPECT EGR VALVE ASSEMBLY |
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Check the EGR valve assembly.
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OK | |
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