Inspection Procedure

1. Remove the SECURITY fuse from the cowl side junction block 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 ECU connector.
2. Measure the resistance and voltage of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

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

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

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

Fig 1: Identifying K58 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE IMMOBILISER CODE ECU