DTC P2014: Intake Manifold Runner Position Sensor / Switch Circuit (Bank 1); DTC P2016: Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 1); DTC P2017: Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 1): Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Enter the following menus: Powertrain / Engine / Active Test / Control the IAC Duty Ratio / All Data / IAC Sensor Voltage.
4. 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 1.0 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 → See step   3 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the DTCs. Refer to DTC CHECK / CLEAR .
4. Enter the following menus: Powertrain / Engine / Trouble Codes.
5. Read the DTCs.

   Result

   Result	Proceed to
   DTC P2014, P2016 and/or P2017 are output	A
   DTC is not output	B

B → See step   7 

A → See step   9 

1. Disconnect the ECM connector.
2. Disconnect the intake air control valve actuator connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   C24-72 (VCIA) - h2-3 (VDD)	Always	Below 1 Ω
   C24-70 (IAC1) - h2-1 (OUT)	Always	Below 1 Ω
   C24-71 (EIA1) - h2-2 (GND)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   C24-72 (VCIA) or h2-3 (VDD) - Body ground	Always	10 kΩ or higher
   C24-70 (IAC1) or h2-1 (OUT) - Body ground	Always	10 kΩ or higher
   C24-71 (EIA1) or h2-2 (GND) - Body ground	Always	10 kΩ or higher

4. Reconnect the intake air control valve actuator connector.
5. Reconnect the ECM connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 1: Identifying ECM (VCIA Voltage) Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the intake air control valve actuator connector.
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   h2-3 (VDD) - Body ground	Ignition switch ON	4.5 to 5.0 V

4. Reconnect the intake air control valve actuator connector.

NG → See step   8 

OK: Go to next step 

1. Replace the intake air control valve actuator. Refer to REMOVAL .

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the DTCs. Refer to DTC CHECK / CLEAR .
4. Enter the following menus: Powertrain / Engine / Trouble Codes.
5. Read the DTCs.

   Result

   Result	Proceed to
   DTC P2014, P2016 and/or P2017 are output	A
   DTC is not output	B

B → END 

A → See step   10