DTC P0105 DTC P0107 DTC P0108 2AD-FHV

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.
DESCRIPTION
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)
  1. Open or short in manifold absolute pressure sensor circuit
  2. Manifold absolute pressure sensor
  3. Turbocharger assembly
  4. EGR valve assembly
  5. ECM

 

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.

Reference: 
Intake Manifold Pressure Malfunction
Approximately 0 kPa Short in PIM circuit
250 kPa (1,875 mmHg, 73.8 in.Hg) or more
  1. Open or short in VC circuit
  2. Open in PIM circuit
  3. Open in E2 circuit

 

WIRING DIAGRAM

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
  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP and Atmosphere Pressure.

  1. Read the value.

     

    OK:

    Condition MAP Value
    No pressure applied Same as atmospheric pressure
    Vacuum applied Becomes vacuum
    Pressure applied Becomes pressurized

 

  OK  
Go to step 4
 
NG  
   
2.CHECK WIRE HARNESS (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

 

CHECK WIRE HARNESS

  1. Disconnect the B45 manifold absolute pressure sensor connector.

  1. Disconnect the B32 ECM connector.

  1. 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
  1. Reconnect the manifold absolute pressure sensor connector.

  1. Reconnect the ECM connector.

 

  NG  
REPAIR OR REPLACE HARNESS AND CONNECTOR
 
OK  
   
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR 
3.CHECK MANIFOLD ABSOLUTE PRESSURE TERMINAL VOLTAGE (VC TERMINAL)

 

Check manifold absolute pressure terminal voltage

  1. Disconnect the B45 manifold absolute pressure sensor connector.

  1. Turn the ignition switch on (IG).

  1. 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
  1. Reconnect the manifold absolute pressure sensor connector.

 

  NG  
REPLACE ECM
 
OK  
   
4.INSPECT TURBOCHARGER SUB-ASSEMBLY
  1. Check the turbocharger sub-assembly.

 

  NG  
REPLACE TURBOCHARGER SUB-ASSEMBLY
 
OK  
   
5.INSPECT EGR VALVE ASSEMBLY
  1. Check the EGR valve assembly.

 

  NG  
REPLACE EGR VALVE ASSEMBLY
 
OK  
   
REPLACE ECM