Inspection Procedure

1. Remove the DOME fuse from the engine room J/B and R/B.
2. Measure the resistance of the fuses.

Standard: Below 1 Ω 

1. NG: REPLACE FUSE 
2. OK: GO TO NEXT STEP 

1. Disconnect the S11 ECU connector.
2. Measure the voltage and resistance of the wire harness side connector.
   Fig 1: Checking Wire Harness (Smart Key ECU Assembly - Battery And Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   Fig 2: Tester Connection Specified Condition Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: GO TO NEXT STEP 

   REPLACE SMART KEY ECU ASSY