Inspection Procedure

1. Remove the S/ROOF and D-IG1-3 fuses from the main body ECU (driver side junction block).
2. Measure the resistance of the fuses.

   Standard resistance 

   FUSE (S/ROOF, D-IG1-3)
   
   

   Tester Connection	Condition	Specified Condition
   S/ROOF fuse	Always	Below 1 Ω
   D-IG1-3fuse	Always	Below 1 Ω

NG: REPLACE FUSE 

OK: GO TO NEXT STEP 

1. Disconnect the X5 drive gear connector.
2. Measure the resistance and voltage according to the value(s) in the table below.

   Standard resistance 

   SLIDING ROOF DRIVE GEAR - BODY GROUND RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   X5-2 (E) - Body ground	Always	Below 1 Ω

   Standard voltage 

   SLIDING ROOF DRIVE GEAR - BODY GROUND VOLTAGE
   
   

   Tester Connection	Switch Condition	Specified Condition
   X5-1 (B) - Body ground	Always	11 to 14 V
   X5-5 (IG) Body ground	Engine switch off	Below 1 V
   X5-5 (IG) - Body ground	Engine switch on (IG)	11 to 14 V

   Fig 1: Checking Harness And Connector (Sliding Roof Drive Gear - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) (See  DISASSEMBLY   )