Inspection Procedure

1. Delete the DTCs (See DTC CHECK / CLEAR  ).

   HINT:

   After all DTCs are cleared, check if the trouble occurs again 6 seconds after the engine switch is turned on (IG).

2. Check for DTCs again.

   OK: No DTC is output. 

NG: Go to step 2 

OK: CHECK INTERMITTENT PROBLEMS 

1. Remove the AM2 fuse from the engine room J/B.
2. Measure the resistance of the fuse.

   Standard resistance: Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to Next Step 

1. Disconnect the E60 and E61 ECU connectors.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TERMINAL SPECIFIED CONDITION CHART
   
   

   Terminal No. (Symbol)	Condition	Specified Condition
   E61-6 (AM1) - Body ground	Always	10 to 14 V
   E60-1 (AM2) - Body ground	Always	10 to 14 V

   Fig 1: Checking Wire Harness (Main Body ECU - Battery)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU