Inspection Procedure

1. Perform troubleshooting in accordance with the chart below.

   Result 

   RESULT REFERENCE
   
   

   Condition	Proceed to
   MIL remains ON	A
   MIL does not illuminate	B

B: Go to step  4

A: Go to next step 

1. Connect the intelligent tester to the DLC3.
2. Turn the power ON (IG).
3. Turn the tester ON.
4. Read DTCs (see DTC CHECK / CLEAR  ).
5. Clear the DTCs (see DTC CHECK / CLEAR  ).
6. Check that the MIL is not illuminated.

   OK: 

   MIL is not illuminated. 

OK: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

NG: Go to next step 

1. Disconnect the E6 ECM connector.
2. Turn the power switch ON (IG).
3. Check that the MIL is not illuminated.

   OK: 

   MIL is not illuminated. 

4. Reconnect the ECM connector.

OK: REPLACE ECM 

Fig 1: Disconnecting E6 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

1. Check that the MIL is illuminated when the power switch is turned ON (IG).

   Standard: 

   MIL is illuminated. 

OK: SYSTEM OK 

NG: Go to next step 

1. Turn the power switch ON (IG).
2. Start the engine.

   Result 

   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 HOW TO PROCEED WITH TROUBLESHOOTING .

NG: REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY 

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