Inspection Procedure

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

   OK: 

   MIL lights up 

NG: Go to step 2 

OK : SYSTEM OK 

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

   Result 

   RESULT REFERENCE
   
   

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

A:  Go to MIL CIRCUIT 

B: Go to next step 

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

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the throttle body connector.

A : REPLACE THROTTLE BODY  (See REMOVAL  )

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 REFERENCE
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the accelerator pedal position sensor connector.

A : REPLACE ACCELERATOR PEDAL ROD ASSEMBLY  (See REMOVAL  )

B: Go to next step 

1. Disconnect the canister pump module connector.
2. Turn the ignition switch to ON.
3. Check the MIL

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the canister pump module connector.

A : REPLACE CANISTER  (See REMOVAL )

Fig 1: Locating Canister Pump Module Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

B: Go to next step 

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

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the camshaft position sensor (for intake camshaft).

A : REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) 

B: Go to next step 

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

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   MIL illuminates	A
   MIL does not illuminate	B

4. Reconnect the camshaft position sensor (for exhaust camshaft).

A : REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) 

B: Go to next step 

1. Disconnect the throttle body connector.
2. Disconnect the accelerator pedal position sensor connector.
3. Disconnect the canister pump module connector.
4. Disconnect the camshaft position sensor (for intake camshaft) connector.
5. Disconnect the camshaft position sensor (for exhaust camshaft) connector.
6. Disconnect the ECM connectors.
7. Measure the resistance.

   Standard resistance (check for short) 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   C19-67 (VCTA) - Body ground	Always	10 kΩ or higher
   A21-57 (VCPA) - Body ground	Always	10 kΩ or higher
   A21-58 (VCP2) - Body ground	Always	10 kΩ or higher
   C19-69 (VCPP) - Body ground	Always	10 kΩ or higher
   C19-70 (VCVI) - Body ground	Always	10 kΩ or higher
   C19-117 (VC) - Body ground	Always	10 kΩ or higher

8. Reconnect the throttle body connector.
9. Reconnect the accelerator pedal position sensor connector.
10. Reconnect the canister pump module connector.
11. Reconnect the camshaft position sensor (for intake camshaft) connector.
    Fig 2: Identifying ECM Connector Terminals

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
12. Reconnect the camshaft position sensor (for exhaust camshaft) connector.
13. Reconnect the ECM connectors.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : REPLACE ECM  (See REMOVAL  )