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Home >> Lexus >> 2002 >> SC 430 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Retractable Hardtop System - Diagnosis >> DTC B2526: Roof Position Switch No. 1, No. 2 Or No. 3 Malfunction >> Inspection Procedure

Inspection Procedure

  1. INSPECT SLIDE ROOF LIMIT SWITCH (ROOF POSITION NO. 1 AND NO. 2). See  DTC B2523 ROOF POSITION SWITCH NO. 1 MALFUNCTION   and  DTC B2524 ROOF POSITION SWITCH NO. 2 MALFUNCTION  . 
    1. NG: REPLACE SLIDE ROOF LIMIT SWITCH (ROOF POSITION NO. 1 AND NO. 2) 
    2. OK: GO TO NEXT STEP. 
  2. INSPECT SLIDE ROOF LIMIT SWITCH (ROOF POSITION NO. 3). See  DTC B2525 ROOF POSITION SWITCH NO. 3 MALFUNCTION  . 
    1. NG: REPLACE SLIDE ROOF LIMIT SWITCH (ROOF POSITION NO. 3) 
    2. OK: GO TO NEXT STEP. 
  3. CHECK HARNESS AND CONNECTOR (SLIDING ROOF CONTROL ECU ASSEMBLY - SLIDE ROOF LIMIT SWITCH (ROOF POSITION NO. 1, NO. 2 AND NO. 3)) 
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP. 
  4. CHECK SLIDE ROOF LIMIT SWITCH OPERATION (ROOF POSITION NO. 1 AND NO. 2). See  DTC B2523: ROOF POSITION SWITCH NO. 1 MALFUNCTION   and  DTC B2524: ROOF POSITION SWITCH NO. 2 MALFUNCTION  . 
    1. NG: REPLACE SLIDE ROOF LIMIT SWITCH (ROOF POSITION NO. 1 AND NO. 2) 
    2. OK: GO TO NEXT STEP. 
  5. CHECK SLIDE ROOF LIMIT SWITCH OPERATION (ROOF POSITION NO. 3). See  DTC B2525: ROOF POSITION SWITCH NO. 3 MALFUNCTION  . 
    1. NG: REPLACE SLIDE ROOF LIMIT SWITCH (ROOF POSITION NO. 3) 
    2. OK: CHECK AND REPLACE SLIDING ROOF CONTROL ECU ASSEMBLY 
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