VC Output Circuit: Procedure

1. Check that the Malfunction Indicator Lamp (MIL) lights up when the ignition switch is turned to ON.

   OK

   MIL lights up.

NG → See step   2 

OK → See step   10 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Check the communication between the Techstream and ECM.
   RESULT
   
   

   Result	Proceed to
   Communication is possible	A
   Communication is not possible	B

A → See step   11 

B: Go to next step 

1. Disconnect the throttle with motor body connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

A → See step   12 

B: Go to next step 

1. Disconnect the accelerator pedal position sensor connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

A → See step   13 

B: Go to next step 

1. Disconnect the canister connector.
   Fig 1: Disconnecting Canister Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

A → See step   14 

B: Go to next step 

1. Disconnect the intake air control valve actuator (for TCV) connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

A → See step   16 

B: Go to next step 

1. Disconnect the camshaft position sensor (for Intake Side) connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

A → See step   17 

B: Go to next step 

1. Disconnect the camshaft position sensor (for Exhaust Side) connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

A → See step   18 

B: Go to next step 

1. Disconnect the throttle with motor body connector.
2. Disconnect the accelerator pedal position sensor connector.
3. Disconnect the canister pump module connector.
4. Disconnect the intake air control valve actuator (for TCV) connector.
5. Disconnect the camshaft position sensor (for Intake Side) connector.
6. Disconnect the camshaft position sensor (for Exhaust Side) connector.
7. Disconnect the ECM connectors.
8. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B30-88 (VCTA) - Body ground	Always	10 kΩ or higher
   A35-57 (VCPA) - Body ground	Always	10 kΩ or higher
   A35-58 (VCP2) - Body ground	Always	10 kΩ or higher
   B30-72 (VCIA) - Body ground	Always	10 kΩ or higher
   B30-113 (VCPP) - Body ground	Always	10 kΩ or higher
   B30-98 (VCE1) - Body ground	Always	10 kΩ or higher
   B30-99 (VCV1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   15