Inspection Procedure

HINT:

If there is not the LEXUS hand-held tester, begin with STEP  2.

1. Check sliding roof control switch operation. 

   PREPARATION: 

   Connect the LEXUS hand-held tester to the DLC3.

   CHECK: 

   1. Enter DATA LIST function of LEXUS hand-held tester.
   2. Check that switch status (ON/OFF) changes on the screen of LEXUS hand-held tester as the sliding roof control switch of the vehicle is turned.

   OK: 

   The motor operates normally. 

   1. NG : Replace sliding roof gear assembly with ECU. 
   2. OK : Go to next step. 

2. Check sliding roof control switch. 

   PREPARATION: 

   1. Remove the overhead J/B assembly.
   2. Disconnect the overhead J/B assembly connector.

   CHECK: 

   Check continuity between terminals when the switch is operated.

   OK: 

   SLIDING ROOF CONTROL SWITCH CONTINUITY SPECIFICATIONS
   
   

   Switch position	Tester connection	Specified condition
   SLIDE OPEN	1-10	Continuity
   SLIDE OFF	-	No continuity
   SLIDE CLOSE	1-11	Continuity
   TILT DOWN	1-24	Continuity
   TILT OFF	-	No continuity
   TILT UP	1-25	Continuity

   Fig 1: Identifying Sliding Roof Control Switch Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG : Replace overhead J/B assembly. 
   2. OK : Go to next step. 
3. Check for open and short in wire harness and connectors between sliding roof gear assembly with ECU and overhead J/B assembly. 
   1. NG : Repair and replace wire harness or connector. 
   2. OK : Proceed to next circuit inspection shown on problem symptom table, see  PROBLEM SYMPTOMS TABLE  .