Inspection Procedure

1. Remove the SECURITY fuse from the main body ECU RH.
2. Measure the resistance of the fuse.

   Standard resistance: Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step 

1. Disconnect the K58 box connector.
2. Measure the resistance and voltage of the wire harness side connector.

   Standard resistance 

   STANDARD RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition
   K58-8 (GND) - Body ground	Below 1 Ω

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   K58-1 (+B) - Body ground	10 to 14 V

Fig 1: Identifying K58 Box 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  )