DTC P0105 P0107 P0108 2AD-FHV

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)	Open or short in manifold absolute pressure sensor circuit Manifold absolute pressure sensor Turbocharger assembly EGR valve assembly 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	Open or short in VC circuit Open in PIM circuit Open in E2 circuit

 

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.

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

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

4. 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)

 

1. Disconnect the B45 manifold absolute pressure sensor connector.

2. Disconnect the B32 ECM connector.

3. 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

4. Reconnect the manifold absolute pressure sensor connector.

5. 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)

 

1. Disconnect the B45 manifold absolute pressure sensor connector.

2. Turn the ignition switch on (IG).

3. 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

4. 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