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 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 

A: Go to MIL CIRCUIT  (See 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 Terminal

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)  (See REMOVAL )

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)  (See REMOVAL )

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 REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   B31-67 (VCTA) - Body ground	Always	10 kΩ or higher
   A50-57 (VCPA) - Body ground	Always	10 kΩ or higher
   A50-58 (VCP2) - Body ground	Always	10 kΩ or higher
   B31-69 (VCPP) - Body ground	Always	10 kΩ or higher
   B31-70 (VCV1) - Body ground	Always	10 kΩ or higher
   B31-117 (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.
12. Reconnect the camshaft position sensor (for exhaust camshaft) connector.
13. Reconnect the ECM connectors.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying ECM Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE ECM  (See REMOVAL )