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.

Component table:

COMPONENT TABLE

Component	Proceed to
Stereo component amplifier (440)	Stereo component amplifier power source circuit (see STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )

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

INSPECT RADIO RECEIVER

Disconnect the K4 receiver connector.

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

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 )

Fig 2: Identifying K4 Receiver Connector Terminals

C: REPLACE RADIO RECEIVER (see REMOVAL )

A: Go to Next Step

CHECK HARNESS AND CONNECTOR ("BLUETOOTH" HANDSFREE MODULE-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 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.
    
    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

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