Toyota Camry owners & service manuals

Toyota Camry: Extension Module Malfunction 2 (B1556)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1556

Extension Module Malfunction 2

When any of the following conditions is met:

  • Internal power supply malfunction
  • Internal hard drive malfunction
  • EEPROM error
  • Storage malfunction

Navigation ECU

CAUTION / NOTICE / HINT

NOTICE:

When replacing the navigation ECU, always replace it with a new one. If a navigation ECU which was installed to another vehicle is used, the following may occur:

  • A communication malfunction DTC may be stored.
  • The navigation ECU may not operate normally.

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE NAVIGATION ECU

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    SEE MORE:

     Parts Location

    PARTS LOCATION ILLUSTRATION *1 FRONT NO. 2 SPEAKER ASSEMBLY RH *2 NAVIGATION ANTENNA ASSEMBLY - Telephone Sub *3 RADIO AND DISPLAY RECEIVER ASSEMBLY *4 DCM (TELEMATICS TRANSCEIVER) *5 NAVIGATION ECU (w/ Navigation System) *6 DLC3 ILLUSTRA

     Maintenance data  (fuel, oil level, etc.)

    Dimensions and weights (2WD models) *1: Unladen vehicles *2: For LE or XLE grade models *3: For SE or XSE grade models *4: 205/65R16 tires *5: 215/55R17 tires and TRD models with 235/40R19 tires *6: 235/45R18, and SE or XSE grade models with 235/40R19 tires *7: For TRD models Dimensions an

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