DTC B1569: DVD-ROM Deck Disconnected: Procedure

1. Check that optional components (including associated wiring) which generate radio waves are not installed.
   RESULT
   
   

   Result	Proceed to
   Optional components (including associated wiring) are installed.	A
   Optional components (including associated wiring) are not installed.	B

   HINT: 

   • Electrical noise from radio waves generated by optional components or the wiring for those components may affect IEEE communication.
   • This DTC may be stored when an IEEE communication error occurs due to electrical noise.

B → See step   3 

A: Go to next step 

1. Remove optional components (including associated wiring).
   NOTE:

   Do not remove optional components or associated wiring without the permission of the customer.

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. Check for DTCs and check if the same trouble occurs again.

   OK

   No DTCs are output.

NG → See step   4 

OK → END 

1. Disconnect the L132 navigation module board connector.
   Fig 1: Identifying L132 Navigation Module Board Connector Terminals

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L132-5 (G) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L132-1 (+B) - Body ground	Always	11 to 14 V
   L132-3 (ACC) - Body ground	Engine switch on (ACC)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Navigation Module Board)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check if the IEEE cable connectors between the navigation module board and the display and navigation module display have any connection problems. Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
2. Check that the screen display is normal.

   OK

   Screen display is normal.

NG → See step   6 

OK → END 

1. Replace the IEEE cable between the navigation module board and the display and navigation module display.
2. Check that the screen display is normal.

   OK

   Screen display is normal.

NG → See step   7 

OK → END 

1. Temporarily replace the navigation module board with a new or normally functioning one. Refer to REMOVAL .
2. Clear the DTCs. Refer to DTC CHECK / CLEAR .
3. Check for DTCs and check if the same trouble occurs again.

   OK

   No DTCs are output.

NG → See step   8 

OK → END