Inspection Procedure

1. Check that the MIL lights up when turning the ignition switch ON.

   OK: 

   MIL lights up 

OK: SYSTEM OK 

NG: Go to next step 

1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
2. Turn the ignition switch ON and intelligent tester ON.
3. Check the communication between the intelligent tester and ECM.

   Result 

   RESULT CHART
   
   

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

B: GO TO MIL CIRCUIT 

A: Go to next step 

1. Turn the ignition switch ON.
2. Measure the voltage of the ECM connector.

   Result: 

   Voltage is not 5 V 

   Fig 1: Identifying E2 ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the T26 throttle body connector.
2. Turn the ignition switch ON.
3. Check the MIL.

   Result 

   RESULT CHART
   
   

   Condition	Proceed to
   MIL does not illuminate	A
   MIL illuminates	B

B: REPLACE THROTTLE BODY ASSEMBLY 

A: Go to next step 

1. Disconnect the C12 canister pump module connector.
2. Turn the ignition switch ON.
3. Check the MIL

   Result 

   RESULT CHART
   
   

   Condition	Proceed to
   MIL does not illuminate	A
   MIL Illuminates	B

B: REPLACE CANISTER 

A: Go to next step 

1. Disconnect the T26 throttle body connector.
2. Disconnect the C12 canister pump module connector.
3. Disconnect the E2 ECM connector.
   Fig 2: Disconnecting E2 ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Measure the resistance of the wire harness connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   E2-29 (VC) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE ECM