Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

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:
- "110 (multi-display)" is the component shown by the sub-code in the example shown in Fig 1.
- The sub-code will be indicated by its physical address.
- For the component list, refer to DIAGNOSIS DISPLAY DETAILED DESCRIPTION ).
  
  Fig 1: Pressing "LAN MON" Switch To Change To "LAN MONITOR" Mode
  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 TABLE

Component	Proceed to
Television display assembly (1BO)	Television display assembly power source circuit (see TELEVISION DISPLAY ASSEMBLY POWER SOURCE CIRCUIT )
Stereo component amplifier (440)	Stereo component amplifier power source circuit (see STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )

CHECK RADIO AND NAVIGATION ASSEMBLY

Disconnect the radio and navigation assembly connectors.

Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
ATX+ (R12-5) - ATX- (R12-15)	Always	60 to 80
TXM+ (R11-9) - TXM- (R11-10)	Always	60 to 80

Fig 2: Disconnecting Radio & Navigation Assembly Connectors

NG: REPLACE RADIO AND NAVIGATION ASSEMBLY

OK: GO TO NEXT STEP.

CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - COMPONENT SHOWN BY SUB-CODE)
HINT:
- 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 ).
1. Referring to Fig 3 below, check the AVC-LAN circuit between the radio and navigation assembly and the component shown by the sub-code.
  1. 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.
    OK:
    
    There is no open or short circuit.
    
    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.
  OK:
  
  Same problem does not occur.
NG: REPLACE RADIO AND NAVIGATION ASSEMBLY

OK: END