Inspection Procedure

WARNING: This page is about a different variant/trim than selected.

IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE
1. Enter the diagnostic mode.
  
  Fig 1: Diagnostic Mode For Radio Receiver Communication Error
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Press the preset switch "2" 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 illustration as an example.
  - For details of the DTC display, refer to "DTC CHECK / CLEAR " (See DTC CHECK / CLEAR ).

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 REFERENCE

Component	Proceed to
"Bluetooth" handsfree module (19D)	Radio receiver power source circuit (See RADIO RECEIVER POWER SOURCE CIRCUIT )
Radio receiver (190)	Radio receiver power source circuit (See RADIO RECEIVER POWER SOURCE CIRCUIT )
Stereo component amplifier (440)	Stereo component amplifier power source circuit (See STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT )

INSPECT RADIO RECEIVER

Disconnect the radio receiver connector.

Fig 2: Identifying Radio Receiver

G05626564

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
E2-5 (ATX+) - E2-15 (ATX-)	Always	60 to 80 Ω
E16-9 (TXM+) - E16-10 (TXM-) (*1)	Always	60 to 80 Ω
HINT: *1: w/ Rear Seat Entertainment System

NG: REPLACE RADIO RECEIVER (See RADIO RECEIVER )

OK: Go to next step

CHECK HARNESS AND CONNECTOR
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 " (See TERMINALS OF ECU ).
1. Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the radio receiver and the component shown by the sub-code.
  1. Check for an open or short in the AVC-LAN circuit between the radio receiver and the component shown by the sub-code.
    OK: There is no open or short circuit.
Fig 3: AVC-LAN Circuit 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 TELEVISION DISPLAY ASSEMBLY (See page TELEVISION DISPLAY )

OK: END