Inspection Procedure

1. Perform troubleshooting in accordance with the chart below.

   Result 

   MIL IS ILLUMINATED RESULT REFERENCE
   
   

   Condition	Proceed to
   MIL remains Illuminated	A
   MIL not illuminated	B

B: Go to step   4 

A: GO TO NEXT STEP 

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position.
3. Turn the tester on.
4. Check whether any DTCs have been stored (See DTC CHECK / CLEAR  ). Note them down if necessary.
5. Clear the DTCs (See DTC CHECK / CLEAR  ).
6. Check if the MIL turns off.

   OK: 

   MIL should turn off. 

OK: REPAIR CIRCUIT INDICATED BY OUTPUT DTC 

NG: GO TO NEXT STEP 

1. Disconnect the E5 ECM connector.
2. Turn the ignition switch to the ON position.
3. Check that the MIL is not illuminated.

   OK: 

   MIL is not illuminated 

OK: REPLACE ECM 

Fig 1: Disconnecting E5 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM) 

1. Check if the MIL is illuminated when the ignition switch is turned to the ON position.

   OK: 

   MIL should be illuminated. 

OK: SYSTEM OK 

NG: GO TO NEXT STEP 

1. Turn the ignition switch to the ON position.
2. Start the engine.

   Result 

   ENGINE STARTS RESULT REFERENCE
   
   

   Result	Proceed to
   Engine starts	A
   Engine does not start*	B

   HINT:

   *: The intelligent tester cannot communicate with the ECM.

B: GO TO  VC OUTPUT CIRCUIT  

A: GO TO NEXT STEP 

1. See the combination meter troubleshooting procedure (See HOW TO PROCEED WITH TROUBLESHOOTING ).

NG: REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY 

OK: CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM