NAVIGATION SYSTEM(except Sedan), Diagnostic DTC:B1552 and B158A

DTC Code DTC Name
B1552 Extension Module Malfunction
B158A Extension Module Noise Adjustment Malfunction

DESCRIPTION

These DTCs are stored when a malfunction occurs in the navigation ECU.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1552

Extension Module Malfunction

Internal malfunction of the navigation ECU

Navigation ECU

B158A

Extension Module Noise Adjustment Malfunction

Screen noise adjustment fails

Navigation ECU

PROCEDURE

  1. CHECK DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Clear DTCs

    2. Recheck for DTCs and check that no DTCs are output.

      Body Electrical > Navigation System > Trouble Codes

      OK

      No DTCs are output.

    Result

    Proceed to

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click hereClick here

    NG

    REPLACE NAVIGATION ECU

    Click here