Inspection Procedure

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

IDENTIFY COMPONENT SHOWN BY 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:
  - "140 (navigation receiver)" is the component shown by the sub-code in the example shown in the illustration.
  - The sub-code will be indicated by its physical address.
  - For the component list, refer to "DIAGNOSIS DISPLAY DETAILED DESCRIPTION " .
    
    Fig 1: Diagnostic Menu 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.

Component table

POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE COMPONENT CHART

Component	Proceed to
Stereo component amplifier (440)	STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT
Television display (1B0)*	TELEVISION DISPLAY POWER SOURCE CIRCUIT *
HINT: *: w/ Rear Seat Entertainment System

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

CHECK NAVIGATION RECEIVER

Disconnect the K18 and K8 receiver connectors.

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

Standard resistance

NAVIGATION RECEIVER TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
K18-5 (ATX+) - K18-15 (ATX-)	Always	60 to 80 Ω
K8-9 (TXM+) - K8-10 (TXM-)*	Always	60 to 80 Ω
HINT: *: w/ Rear Seat Entertainment System

Fig 2: Identifying K18 And K8 Receiver Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Result

NAVIGATION RECEIVER RESULT CHART

Result	Proceed to
OK	A
NG (for Column Shift Type)	B
NG (for Floor Shift Type)	C

B: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Column Shift Type) )

C: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Floor Shift Type) )

A: Go to Next Step

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - 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 the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the navigation receiver and the component shown by the sub-code.
  1. Disconnect all connectors between the navigation receiver and the component shown by sub-code.
  2. Check for an open or short in the AVC-LAN circuit between the navigation receiver and the component shown by the sub-code.
    OK: There is no open or short circuit.
    
    Fig 3: AVC-LAN Wiring Diagram (W/O Rear Seat Entertainment System)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Fig 4: AVC-LAN Wiring Diagram (W/ Rear Seat Entertainment System)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

REPLACE COMPONENT SHOWN BY SUB-CODE

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.

Result

COMPONENT SHOWN BY SUB-CODE RESULT CHART

Result	Proceed to
OK	A
NG (for Column Shift Type)	B
NG (for Floor Shift Type)	C

B: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Column Shift Type) )

C: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Floor Shift Type) )

A: END