Toyota Venza manuals

Toyota Venza: Intake Manifold Runner Position Sensor / Switch Circuit (Bank 1) (P2014,P2016,P2017)

Toyota Venza Service Manual / 1ar-fe Engine Control / Sfi System / Intake Manifold Runner Position Sensor / Switch Circuit (Bank 1) (P2014,P2016,P2017)

DESCRIPTION

The tumble control valve position sensor is a non-contact type sensor.

The position sensor measures the opening angle of the tumble control valve. The sensor is reliable and accurate, as it is electrically controlled by Hall elements.


DTC No.

DTC Detection Condition

Trouble Area

P2014

The tumble control valve position sensor output voltage flutters up and down beyond the normal operating range (below 0.2 V, or higher than 4.8 V) for more than 0.5 seconds (open or short) (1 trip detection logic).

  • Open or short in tumble control valve position sensor circuit
  • Tumble control valve position sensor
  • ECM

P2016

The tumble control valve position sensor output voltage is below 0.2 V for more than 0.5 seconds (short) (1 trip detection logic).

P2017

The tumble control valve position sensor output voltage is higher than 4.8 V for more than 0.5 seconds (open) (1 trip detection logic).

HINT:

After confirming DTC P2014, P2016 or P2017, use the Techstream to confirm the IAC Sensor Voltage (tumble control valve position sensor output voltage). Enter the following menus: Powertrain / Engine / Data List / IAC Sensor Voltage.

IAC Sensor Voltage

Malfunction

0.2 V or less

  • IAC1 circuit shorted
  • VCIA circuit open

4.8 V or higher

  • VCIA and IAC1 circuit short-circuited
  • IAC1 circuit open
  • EIA1 circuit open

MONITOR DESCRIPTION

The ECM IAC1 terminal voltage increases in correlation with the opening angle of the tumble control valve. When the tumble control valve is fully closed, approximately 0.8 V is applied to the IAC1 terminal. When the tumble control valve is fully open, approximately 3.6 V is applied to the IAC1 terminal.

When the output voltage of the IAC1 terminal deviates from the standard range, the ECM determines that a malfunction has occurred in the position sensor and stores a DTC.

MONITOR STRATEGY

Related DTCs

P2014: Tumble control valve position sensor range check (chattering)

P2016: Tumble control valve position sensor range check (low voltage)

P2017: Tumble control valve position sensor range check (high voltage)

Required Sensors/Components (Main)

Tumble control valve position sensor

Required Sensors/Components (Related)

None

Frequency of Operation

Continuous

Duration

0.5 seconds

MIL Operation

Immediate

Sequence Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

None

TYPICAL MALFUNCTION THRESHOLDS

P2014

Tumble control valve position sensor voltage

Below 0.2 V, or higher than 4.8 V

P2016

Tumble control valve position sensor voltage

Below 0.2 V

P2017

Tumble control valve position sensor voltage

Higher than 4.8 V

COMPONENT OPERATING RANGE

Tumble control valve position sensor voltage

0.2 to 4.8 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 the DTCs (even if no DTCs are stored, perform the clear DTC procedure) (See page ).

  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. Allow 0.5 seconds or more to elapse.
  7. Enter the following menus: Powertrain / Engine / Trouble Codes.
  8. 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.
  9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  10. Input the DTC: P2014, P2016 or P2017.
  11. Check the DTC judgment result.

    Techstream 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 NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
  12. If the test result is INCOMPLETE or N/A and 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

Refer to DTC P2004 (See page ).


CAUTION / NOTICE / HINT

HINT:

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.

PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE TUMBLE CONTROL VALVE)

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Powertrain / Engine / Active Test / Control the IAC Duty Ratio / IAC Sensor Voltage.

(d) Check the output voltage of IAC Sensor Voltage while changing Control the IAC Duty Ratio from -100 to 100% (or from 100 to -100%) using the Techstream.

OK:

The voltage output of IAC Sensor Voltage remains between 0.2 and 4.8 V while Control the IAC Duty Ratio is changed from -100 to 100% (or from 100 to -100%).

HINT:

Control the IAC Duty Ratio

operation

IAC Sensor Voltage

(Normal)

Suspected Failure Area

  • IAC1 circuit shorted
  • VCIA circuit open
  • VCIA and IAC1 circuit short-circuited
  • IAC1 circuit open
  • EIA1 circuit open

Sensor malfunction

-100%

0.2 to 1.4 V

Remain below 0.2 V

Remain higher than 4.8 V

Other than the voltage in the 2 columns on the left

100%

3.2 to 4.8 V

Remain below 0.2 V

Remain higher than 4.8 V


NG

GO TO STEP 3


OK

2.

CHECK WHETHER DTC OUTPUT RECURS (DTC P2014, P2016 AND/OR P2017 ARE OUTPUT AGAIN)

(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.

(f) Turn the Techstream on.

(g) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(h) Enter the following menus: Powertrain / Engine / Trouble Codes.

(i) Read the DTCs.

Result

Proceed to

P2014, P2016 and/or P2017 are output again

A

DTC is not output

B


A

REPLACE ECM


B

CHECK FOR INTERMITTENT PROBLEMS

3.

CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ACTUATOR - ECM)

(a) Disconnect the ECM connector.

(b) Disconnect the intake air control valve actuator connector.

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

Standard Resistance (Check for Open):

Tester Connection

Condition

Specified Condition

B58-72 (VCIA) - U3-3 (VDD)

Always

Below 1 Ω

B58-70 (IAC1) - U3-1 (OUT)

Always

Below 1 Ω

B58-71 (EIA1) - U3-2 (GND)

Always

Below 1 Ω

Standard Resistance (Check for Short):

Tester Connection

Condition

Specified Condition

B58-72 (VCIA) or U3-3 (VDD) - Body ground

Always

10 kΩ or higher

B58-70 (IAC1) or U3-1 (OUT) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

INSPECT ECM (VCIA VOLTAGE)

(a) Disconnect the intake air control valve actuator 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

U3-3 (VDD) - Body ground

Ignition switch ON

4.5 to 5.5 V

Text in Illustration

*a

Front view of wire harness connector

(to Intake Air Control Valve Actuator)


NG

REPLACE ECM


OK

5.

REPLACE INTAKE AIR CONTROL VALVE ACTUATOR (FOR TUMBLE CONTROL VALVE)

(a) Replace the intake air control valve actuator (See page ).



NEXT

6.

CHECK WHETHER DTC OUTPUT RECURS (DTC P2014, P2016 AND/OR P2017 ARE OUTPUT AGAIN)

(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.

(f) Turn the Techstream on.

(g) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(h) Enter the following menus: Powertrain / Engine / Trouble Codes.

(i) Read the DTCs.

Result

Proceed to

P2014, P2016 and/or P2017 are output again

A

DTC is not output

B


A

REPLACE ECM


B

END

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