Toyota RAV4 manuals

Toyota Sienna Service Manual: Radio Receiver Communication Error

INSPECTION PROCEDURE

1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE

  1. Enter the diagnostic mode

IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE

  1. Press the preset switch "3" to change to "Detailed Information Mode".
  2.  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

Proceed to

Stereo component amplifier (440) Stereo component amplifier power source circuit
Television display assembly (1B0) Television display assembly power source circuit

3 INSPECT RADIO RECEIVER

INSPECT RADIO RECEIVER

  1. Disconnect the radio receiver connectors.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

*1: 10 Speaker System

4 CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT SHOWN BY SUB-CODE)

HINT:

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

OK: There is no open or short circuit.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT SHOWN BY SUB-CODE)

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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