Inspection Procedure

1. Remove the DOME fuse from the engine room junction block and relay block.
2. Measure the resistance of the fuses.

   Standard resistance: Below 1 Ω 

NG : REPLACE FUSE 

OK : GO TO NEXT STEP 

1. Disconnect the S11 ECU connector.
2. Measure the voltage of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   S11-18 (IG) - Body ground	Power switch OFF	Below 1 V
   	Power switch ON (IG)	10 to 14 V
   S11-1 (+B1) - Body ground	Always	10 to 14 V

3. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   S11-17 (E) - Body ground	Below 1 Ω

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 1: Identifying S11 ECU Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE CERTIFICATION ECU