AUDIO AND VISUAL SYSTEM (w/o Navigation System) - Radio Receiver Communication Error

INSPECTION PROCEDURE

1.IDENTIFY COMPONENT SHOWN BY SUB-CODE

Enter diagnostic mode.

Audio And Visual System (W/O Navigation System) - Radio Receiver Communication Error. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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

Identify the component shown by the sub-code.

"P190" set by the radio receiver assembly is shown in the preceding illustration as an example.

For details of the DTC display, refer to DTC Check/Clear ().

NEXT

2.CHECK COMPONENT SHOWN BY SUB-CODE

Select the component shown by the sub-code.

Component Table
Component	Proceed to
Except radio receiver assembly	A
Radio receiver assembly (190)	B

REPLACE RADIO RECEIVER ASSEMBLY ()

A

3.CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

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 assembly (440)	Stereo component amplifier power source circuit ()
Multi-media interface ECU (388)	Multi-media interface ECU power source circuit ()

NEXT

4.INSPECT RADIO RECEIVER ASSEMBLY

Disconnect the F1 and F55 radio receiver assembly connectors.

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

Standard Resistance:
Tester Connection Condition Specified Condition
F1-5 (ATX+) - F1-15 (ATX-) Always 60 to 80 Ω
F55-9 (TXM+) - F55-10 (TXM-) Always 60 to 80 Ω

Text in Illustration
*1	Component without harness connected (Radio Receiver Assembly)
*2	Component without harness connected (Radio Receiver Assembly)

REPLACE RADIO RECEIVER ASSEMBLY ()

OK

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

Start the check from the circuit that is near the component shown by the sub-code first.

For details of the connectors, refer to Terminals of ECU ().

Referring to the following AVC-LAN wiring diagram, check the AVC-LAN circuit between the radio receiver assembly and component shown by the sub-code.

Disconnect all connectors between the radio receiver assembly and component shown by the sub-code.

Check for an open or short in the AVC-LAN circuit between the radio receiver assembly and component shown by the sub-code.

Audio And Visual System (W/O Navigation System) - Radio Receiver Communication Error. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

6.REPLACE COMPONENT SHOWN BY SUB-CODE

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

REPLACE RADIO RECEIVER ASSEMBLY ()

END