NAVIGATION SYSTEM (for Radio and Display Type), Diagnostic DTC:B157D

DESCRIPTION

This DTC is stored when a malfunction occurs in the digital audio broadcasting antenna assembly which is connected to the radio and display receiver assembly.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK FOR DTC

   
   

   1. Clear the DTCs (Click here).

   2. Check for DTCs (Click here).

      OK
      No DTCs are output.

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK OPTIONAL COMPONENTS

   
   

   1. Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.

      OK
      Optional components are installed.

      Note:

      Do not remove optional components without permission of the customer.

   
   
   • OKClick here
   • NGClick here
3. Click here

   INSPECT WINDSHIELD GLASS ANTENNA WIRE

   
   

   1. Inspect the windshield glass antenna wire (Click here).

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   

   1. Remove the antenna connector from the radio and display receiver assembly.

   2. Turn the engine switch on (ACC) with the radio and display receiver assembly connector connected.

   3. Turn on the radio and turn into AM mode.

   4. Place a screwdriver, thin wire or other metal object on the radio and display receiver assembly antenna jack and check that noise can be heard from the speakers.

      OK
      Noise occurs.

   
   
   • OKClick here
   • NGClick here
5. Click here

   CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 2 ANTENNA CORD SUB-ASSEMBLY)

   
   

   1. Disconnect the DB radio and display receiver assembly connector.

   2. Disconnect the antenna connector from the No.2 antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 1 Always Below 1 Ω 1-a - 1-a Always Below 1 Ω 1 - Body ground Always 10 kΩ or higher 1-a - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
6. Click here

   CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

   
   
   1. 

      Disconnect the antenna connector from the radio and display receiver assembly.

   2. Disconnect the antenna connector from the digital audio broadcasting antenna assembly LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 1 Always Below 1 Ω 1-a - 1-a Always Below 1 Ω 1 - Body ground Always 10 kΩ or higher 1-a - Body ground Always 10 kΩ or higher

      Table 1. Text in Illustration

      *a	Front view of wire harness connector (to Digital Audio Broadcasting Antenna Assembly LH)
      *b	Front view of wire harness connector (to Vehicle Wire Harness)

   
   
   • OKClick here
   • NGClick here
7. Click here

   CHECK DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY LH

   
   

   1. Replace the digital audio broadcasting antenna assembly LH with a known good one (Click here).

   2. Clear the DTCs (Click here).

   3. Check for DTCs (Click here).

      OK
      No DTCs are output.

   
   
   • OKClick here
   • NGClick here
8. Click here

   CHECK DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY RH

   
   

   1. Replace the digital audio broadcasting antenna assembly RH with a known good one (Click here).

   2. Clear the DTCs (Click here).

   3. Check for DTCs (Click here).

      OK
      No DTCs are output.

   
   
   • OKClick here
   • NGClick here
9. Click here

   END (DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY LH IS DEFECTIVE)

10. Click here

    USE SIMULATION METHOD TO CHECKClick here

11. Click here

    REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

12. Click here

    REPAIR WINDSHIELD GLASS ANTENNA WIREClick here

13. Click here

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

14. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

15. Click here

    REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLYClick here

16. Click here

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

17. Click here

    END (DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY RH IS DEFECTIVE)