Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

IDENTIFY THE COMPONENT SHOWN BY SUB-CODE
1. Enter the diagnostic mode.
2. Press the "LAN Mon" switch to change the mode to "LAN Monitor" mode.
3. Identify the component shown by the sub-code.
  HINT:
  - For example, "110 (multi-display)" is the component shown by the sub-code as shown in the illustration.
  - The sub-code will be indicated by its physical address.
    
    Fig 1: Screen Display - LAN Monitor
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 CHART

Component	Proceed to
Radio receiver (190)	Radio receiver power source circuit (See RADIO RECEIVER POWER SOURCE CIRCUIT )
Stereo component amplifier (440)	Stereo component amplifier power source circuit (See STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )
Gateway ECU (1C6)	Gateway ECU power source circuit (See GATEWAY ECU POWER SOURCE CIRCUIT )
Navigation ECU (178)	Navigation ECU power source circuit (See NAVIGATION ECU POWER SOURCE CIRCUIT )
Clock assembly (1D6)	Clock power source circuit (See CLOCK POWER SOURCE CIRCUIT )
"Bluetooth" handsfree module (19D)	Radio receiver power source circuit (See RADIO RECEIVER POWER SOURCE CIRCUIT )

INSPECT RADIO RECEIVER

Disconnect the radio receiver connectors.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
ATX+ (E12-5) - ATX- (E12-15)	Always	60 to 80 Ω
TX+ (E15-9) - TX- (E15-10)	Always	60 to 80 Ω

NG: REPLACE RADIO RECEIVER

Fig 2: Identifying E12 And E15 Connector Terminals

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMPONENT SHOWN BY SUBCODE)
HINT:
- Start the check from the circuit that is nearest the component shown by the sub-code first.
- For details of the connectors, refer to "TERMINALS OF ECU " .
1. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the multi-display and the component shown by the sub-code.
  1. Disconnect all connectors between the multi-display and the component shown by sub-code.
  2. Check for an open or short in the AVC-LAN circuit between the multi-display and the component shown by the sub-code.
    OK: There are no open or short circuits.
    
    Fig 3: AVC-LAN Wiring Diagram
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step
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.
  HINT:
  
  The "Bluetooth" handsfree module is built into the radio receiver. If there is a problem, replace the radio receiver.
  
  OK: Same problem does not occur.
NG: REPLACE MULTI-DISPLAY

OK : END