Toyota Tundra Service Manual: Manifold Absolute Pressure / Barometric Pressure Circuit Low Input (P0107,P0108)

Toyota Tundra Service Manual / Engine, Hybrid System / 1ur-fe Engine Control / Sfi System / Manifold Absolute Pressure / Barometric Pressure Circuit Low Input (P0107,P0108)

DESCRIPTION

By a built-in sensor unit, the manifold absolute pressure sensor detects the intake manifold pressure as a voltage.

DTC No.

DTC Detection Condition

Trouble Area

P0107

The manifold absolute pressure sensor voltage is below 0.5 V for 0.5 seconds.

(1 trip detection logic)

  • Open or short in manifold absolute pressure sensor circuit
  • Manifold absolute pressure sensor
  • ECM

P0108

The manifold absolute pressure sensor voltage is higher than 4.5 V for 0.5 seconds.

(1 trip detection logic)

  • Open or short in manifold absolute pressure sensor circuit
  • Manifold absolute pressure sensor
  • ECM

HINT:

When any of these DTCs are output, check the manifold absolute pressure using the Techstream. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP.

MAP

Malfunction

Approximately 0 kPa

  • Short in PIM circuit to ground
  • Open in VC circuit

130 kPa or higher

  • Short in VC circuit to PIM circuit
  • Open in PIM circuit
  • Open in E2 circuit

MONITOR DESCRIPTION

The ECM monitors the sensor voltage and uses this value to calculate the manifold absolute pressure. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the manifold pressure sensor and sets a DTC.

Example:

When the sensor output voltage remains less than 0.5 V, or more than 4.5 V for more than 0.5 seconds, the ECM sets a DTC.

If the malfunction is not repaired successfully, a DTC is set 0.5 seconds after the engine is next started.

MONITOR STRATEGY

Related DTCs

P0107: Manifold Absolute Pressure (MAP) sensor range check (Low voltage)

P0108: Manifold Absolute Pressure (MAP) sensor range check (High voltage)

Required Sensors/Components (Main)

Manifold absolute pressure sensor

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

0.5 seconds

MIL Operation

Immediate

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs not present

None

Starter

Off

Battery voltage

8 V or more

Ignition switch

ON

Time after starter ON to OFF

2 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

P0107

MAP sensor voltage

Below 0.5 V

P0108

MAP sensor voltage

Higher than 4.5 V

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
  4. Turn the ignition switch off and wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the Techstream on.
  6. Start the engine.
  7. Idle the engine for 5 seconds [A].
  8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
  9. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  11. Input the DTC: P0107 or P0108.
  12. Check the DTC judgment result.

    Tester Display

    Description

    NORMAL

    • DTC judgment completed
    • System normal

    ABNORMAL

    • DTC judgment completed
    • System abnormal

    INCOMPLETE

    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    N/A

    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    HINT:

    If the judgment result shows INCOMPLETE or N/A, perform steps [A] through [B] again.

  13. If no pending DTC is output, perform a universal trip and check for permanent DTCs (See page ).

    HINT:

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

  • If DTCs relating to different systems are stored and they share terminal E2 as their ground, check this ground circuit first.
  • Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

PROCEDURE

1.

READ VALUE USING TECHSTREAM (MANIFOLD ABSOLUTE PRESSURE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List / MAP.

(e) Read the MAP value.

OK:

Same value as the actual atmospheric pressure.

HINT:

  • Standard atmospheric pressure is 101 kPa. For every 100 m increase in altitude, pressure drops by 1 kPa. Varies by weather (high atmospheric pressure, low atmospheric pressure).
  • Also, check "Atmosphere Pressure" in the Data List.
OK

CHECK FOR INTERMITTENT PROBLEMS

NG

2.

CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR (TERMINAL VOLTAGE)

(a) Disconnect the manifold absolute pressure sensor connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D80-3 (VC) - D80-2 (E2)

Ignition switch ON

4.5 to 5.5 V

D80-1 (PIM) - D80-2 (E2)

Ignition switch ON

3.0 to 5.0 V

NG

GO TO STEP 5

OK

3.

REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

(a) Replace the manifold absolute pressure sensor (See page ).

NEXT

4.

CHECK WHETHER DTC OUTPUT RECURS

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON and turn the Techstream on.

(c) Clear the DTCs (See page ).

(d) Turn the ignition switch off and wait for at least 30 seconds.

(e) Turn the ignition switch to ON and wait for 2 seconds.

(f) Turn the Techstream on.

(g) Enter the following menus: Powertrain / Engine and ECT / DTC.

(h) Read the DTCs.

Result

Display (DTC output)

Proceed to

No DTC output

A

DTC P0107 and/or P0108 output

B

A

END

B

REPLACE ECM

5.

CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

(a) Disconnect the manifold absolute pressure sensor connector.

(b) Disconnect the ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for open):

Tester Connection

Condition

Specified Condition

D80-1 (PIM) - D74-97 (PIM)

Always

Below 1 Ω

D80-3 (VC) - D74-66 (VCV2)

Always

Below 1 Ω

D80-2 (E2) - D74-98 (E2)

Always

Below 1 Ω

Standard Resistance (Check for short):

Tester Connection

Condition

Specified Condition

D80-1 (PIM) or D74-97 (PIM) - Body ground

Always

10 kΩ or higher

D80-3 (VC) or D74-66 (VCV2) - Body ground

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation (P106A,P106B)

    Intake Air Temperature Sensor 1 Circuit Range / Performance (P0111)

    See More:

    Toyota Tundra Service Manual > Dynamic Radar Cruise Control System: System Diagram
    SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line ECM Millimeter Wave Radar Sensor Assembly Cruise control operation signal Accelerator pedal idle position signal Accel override operation signal Cruise control speed status signal Approach warning signal Brake signal Cruise control main ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2020 Copyright www.ttundra.com
    0.0172