Toyota RAV4 manuals

Toyota Sienna Service Manual: Radio and Navigation Assembly Communication Error

Toyota Sienna Service Manual / Navigation / Navigation system / Diagnostic trouble code chart / Radio and Navigation Assembly Communication Error

INSPECTION PROCEDURE

1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE

IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE

  1. Enter the diagnostic mode.
  2.  Press the "LAN Mon" switch to change to "LAN Monitor" mode.
  3.  Identify the component shown by the sub-code.

HINT:

2 CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

  1. Inspect the power source circuit of the component shown by the sub-code.

    If the power source circuit is operating normally, proceed to the next step

Component Table:

Component Table

3 CHECK RADIO AND NAVIGATION ASSEMBLY

CHECK RADIO AND NAVIGATION ASSEMBLY

  1. Disconnect the radio and navigation assembly.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

4 CHECK HARNESS AND CONNECTOR

HINT:

  1.  Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the radio and navigation assembly and the component shown by the sub-code.
  1.  Disconnect all connectors between the radio and navigation assembly and the component shown by sub-code.
  2.  Check for an open or short in the AVC-LAN circuit between the radio and navigation assembly and the component shown by the sub-code

CHECK HARNESS AND CONNECTOR

OK: There is no open or short circuit.

5 REPLACE COMPONENT SHOWN BY SUB-CODE

  1. Replace the component shown by the sub-code with a normal one and check if the same problem occurs again.

OK: Same problem does not occur.

END

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