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.
  
  Fig 1: Service Check Mode And Detailed Information Diagnostic Mode Flow Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Press the preset switch "3" to change to "Detailed Information Mode".
3. Identify the component shown by the sub-code.
  HINT:
  - "190 (radio receiver)" is the component shown by the subcode in the example shown in the illustration.
  - For details of the DTC display, refer to "DTC CHECK / CLEAR " .

CHECK COMPONENT SHOWN BY SUB-CODE

Select the component shown by sub-code.

HINT:

The "Bluetooth" handsfree module is built into the radio receiver. If there is a problem between the "Bluetooth" handsfree module and radio receiver, replace the radio receiver.

Component table:

COMPONENT TABLE

Component	Proceed to
Radio Receiver (190) (for Column Shift Type)	A
Radio Receiver (190) (for Floor Shift Type)	B
Except Radio Receiver	C

A: REPLACE RADIO RECEIVER (see REMOVAL )

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: Go to next step.

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
Stereo component amplifier (440)	Stereo component amplifier power source circuit (see STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )
Television display (1B0)*	Television display assembly power source circuit (see TELEVISION DISPLAY POWER SOURCE CIRCUIT )
HINT: *: w/ Rear Seat Entertainment System

INSPECT RADIO RECEIVER

Disconnect the K4 and K22* receiver connectors.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
K4-5 (ATX+) - K4-15 (ATX-)	Always	60 to 80 Ω
K22-9 (TXM+) - K22-10 (TXM-)*	Always	60 to 80 Ω
HINT: *: w/ Rear Seat Entertainment System

Result:

RESULT REFERENCE

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

B: REPLACE RADIO RECEIVER (see REMOVAL )

C: REPLACE RADIO RECEIVER (see REMOVAL )

Fig 2: Identifying K4 And K22 Connectors Terminals

A: Go to next step.

CHECK HARNESS AND CONNECTOR ("BLUETOOTH" HANDSFREE MODULE COMPONENT SHOWN BY SUB-CODE)

Fig 3: AVC-LAN Wiring Diagram
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 the "TERMINALS OF ECU " .
1. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the "Bluetooth" handsfree module and the component shown by the sub-code.
  1. Disconnect all connectors between the "Bluetooth" handsfree module and the component shown by the sub-code.
  2. Check for an open or short in the AVC-LAN circuit between the "Bluetooth" handsfree module and the component shown by the sub-code.
    OK: There is no open or short circuit.
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:

RESULT REFERENCE

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

B: REPLACE RADIO RECEIVER (BUILT-IN "BLUETOOTH" HANDSFREE MODULE) (see REMOVAL )

C: REPLACE RADIO RECEIVER (BUILT-IN "BLUETOOTH HANDSFREE MODULE") (see REMOVAL )

A: END