Inspection Procedure

1. Enter the diagnostic mode.
   Fig 1: Identifying Service Check Mode Description Diagram

   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:

   • "P190" set by the radio receiver shown in the preceding graphic as an example.
   • For details of the DTC display, refer to DTC CHECK/CLEAR  .

1. 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
   Except Radio Receiver	A
   Radio Receiver (190)	B

B: REPLACE RADIO RECEIVER  (See REMOVAL  )

A: Go to next step 

1. 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 (1B0)	TELEVISION DISPLAY POWER SOURCE CIRCUIT
   Stereo component amplifier (440)	STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT

1. Disconnect the radio receiver connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION TABLE
   
   

   Tester Connection	Condition	Specified Condition
   E2-5 (ATX+) - E2-15 (ATX-)	Always	60 to 80 Ω
   E15-9 (TXM+) - E15-10 (TXM-) (*1, *2)	Always	60 to 80 Ω
   E16-9 (TXM+) - E16-10 (TXM-)(*1, *3)	Always	60 to 80 Ω
   HINT: *1: w/ Rear Seat Entertainment System *2: for Premium models *3: for Standard models

   Fig 2: Identifying Radio Receiver Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RADIO RECEIVER  (See REMOVAL  )

OK: Go to next step 

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 "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: Identifying AVC-LAN Wiring Diagram

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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 RECEIVER (BUILT-IN "BLUETOOTH" HANDSFREE MODULE)  (See REMOVAL  )

OK: END