Sliding Roof ECU Power Source Circuit: Procedure

1. Select the ACTIVE TEST, use Techstream to generate a control command, and then check that the sliding roof slides open/close and tilts up/down.

   Sliding roof ECU

   Tester Display	Test Part	Control Range	Diagnostic Note
   Slide Roof	Operate sliding roof SLIDE CLOSE/TILT UP	CLOS/UP: Sliding roof SLIDE CLOSE or TILT UP operation occurs OFF: Sliding roof is not operating	-
   Slide Roof	Operate sliding roof SLIDE OPEN/TILT DOWN	OPEN/DOWN: Sliding roof SLIDE OPEN or TILT DOWN operation occurs OFF: Sliding roof is not operating	-

   OK 

   Sliding roof operates normally.

NG → See step   2 

OK → REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU) 

1. Remove the S/ROOF and ECU-IG No. 1 fuses from the instrument panel J/B.
2. Measure the resistance of the fuses.

   Standard resistance

   Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Disconnect the Q13 connector.
   Fig 1: Identifying Q13 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Condition	Specified Condition
   B (Q13-1) - Body ground	Always	10 to 14 V
   IG (Q13-5) - Body ground	Ignition switch on (IG)	10 to 14 V
   IG (Q13-5) - Body ground	Ignition switch off	Below 1 V

   Standard resistance

   Tester Connection	Specified Condition
   E (Q13-2) - Body ground	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)