Inspection Procedure

1. Delete the DTC (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 below.

OK: END 

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

   Resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to Next Step 

1. Disconnect the D44 ECU connector.
2. Measure the voltage according to the value(s) in the table below.
   Fig 1: Disconnecting D44 ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Voltage 

   TERMINALS REFERENCE
   
   

   Terminal No. (Symbol)	Specified Condition
   D44-33 (AM1) - Body ground	10 to 14 V
   D44-12 (AM2) - Body ground	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE POWER SOURCE CONTROL ECU