DTC B1582: Map Disk Reading Malfunction: Procedure

1. Check that the map disc is not deformed or cracked.
   Fig 1: Checking Disc For Deformed Or Cracked

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   No deformations or cracks on the map disc

NG → See step   4 

OK: Go to next step 

1. Map disc cleaning
   Fig 2: Cleaning Disc With Soft Cloth

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. If dirt is on the map disc surface, wipe it clean with a soft cloth from the inside to the outside in a radial direction.
      NOTE:

      Do not use a conventional record cleaner or antistatic preservative.

NEXT: Go to next step 

1. Clear the DTCs, refer to DTC CHECK / CLEAR .
2. Recheck for DTCs and check if the same DTC is output again.

   OK

   No DTCs are output.

NG → See step   4 

OK → END (MAP DISC IS DEFECTIVE) 

1. Replace the map disc.
2. Clear the DTCs, refer to DTC CHECK / CLEAR .
3. Recheck for DTCs and check if the same DTC is output again.

   OK

   No DTCs are output.

NG → See step   5 

OK → END (MAP DISC IS DEFECTIVE)