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 → SYSTEM OK 

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

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

A → See step   12 

B: Go to next step 

1. Disconnect the B13 throttle body with motor assembly connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the throttle body with motor assembly connector.

A → See step   13 

B: Go to next step 

1. Disconnect the A3 accelerator pedal sensor assembly connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the accelerator pedal sensor assembly connector.

A → See step   14 

B: Go to next step 

1. Disconnect the B21 VVT sensor (for Intake Side of Bank 1) connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the VVT sensor (for Intake Side of Bank 1) connector.

A → See step   15 

B: Go to next step 

1. Disconnect the B23 VVT sensor (for Exhaust Side of Bank 1) connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the VVT sensor (for Exhaust Side of Bank 1) connector.

A → See step   16 

B: Go to next step 

1. Disconnect the B24 VVT sensor (for Exhaust Side of Bank 2) connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the VVT sensor (for Exhaust Side of Bank 2) connector.

A → See step   17 

B: Go to next step 

1. Disconnect the B22 VVT sensor (for Intake Side of Bank 2) connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the VVT sensor (for Intake Side of Bank 2) connector.

A → See step   18 

B: Go to next step 

1. Disconnect the O15 canister pump module connector.
   Fig 1: Identifying Canister Pump Module 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

4. Reconnect the canister pump module connector.

A → See step   19 

B: Go to next step 

1. Disconnect the B31 power steering oil pressure switch connector.
2. Turn the ignition switch to ON.
3. Check the MIL.
   RESULT
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the power steering oil pressure switch connector.

A → See step   20 

B: Go to next step 

1. Disconnect the B13 throttle body with motor assembly connector.
2. Disconnect the A3 accelerator pedal sensor assembly connector.
3. Disconnect the B21 VVT sensor (for Intake Side of Bank 1) connector.
4. Disconnect the B23 VVT sensor (for Exhaust Side of Bank 1) connector.
5. Disconnect the B24 VVT sensor (for Exhaust Side of Bank 2) connector.
6. Disconnect the B22 VVT sensor (for Intake Side of Bank 2) connector.
7. Disconnect the O15 canister pump module connector.
8. Disconnect the B31 power steering oil pressure switch connector.
9. Disconnect the B36, B38 and F50 ECM connectors.
10. Measure the resistance according to the value(s) in the table below.

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    B38-13 (VCTA) - Body ground	Always	10 kΩ or higher
    F50-4 (VCPA) - Body ground	Always	10 kΩ or higher
    F50-2 (VCP2) - Body ground	Always	10 kΩ or higher
    B36-15 (VCV1) - Body ground	Always	10 kΩ or higher
    B36-16 (VCV2) - Body ground	Always	10 kΩ or higher

11. Reconnect the throttle body with motor assembly connector.
12. Reconnect the accelerator pedal sensor assembly connector.
13. Reconnect the VVT sensor connectors.
14. Reconnect the canister pump module connector.
15. Reconnect the power steering oil pressure switch connector.
16. Reconnect the ECM connectors.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   21