Inspection Procedure

1. Disconnect the K16 DLC3 connector.
2. Disconnect the A54 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   STANDARD RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition
   K16-13 (TC) - A54-63 (TC)	Below 1 Ω
   K16-4 (CG) - Body ground	Below 1 Ω
   K16-13 (TC) - Body ground	10 kΩ or higher

Fig 1: Identifying A54 ECU Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )