Inspection Procedure

1. Remove the MPX-B1 fuse from the passenger junction block.
2. Measure the resistance of the fuse.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step 

1. Disconnect the S19 ECU connector.
   Fig 1: Identifying S19 ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S19-8 (CPUB) - Body ground	10 to 14 V

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE SLIDING ROOF CONTROL ECU