Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE
1. Enter the diagnostic mode.
  
  Fig 1: Diagnostic Mode For Stereo Component Amplifier 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:
  - "190 (radio receiver)" is the component shown by the sub-code in the example shown in the illustration.
  - For details of the DTC display, refer to the "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 CHART

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 )
Television display assembly (1B0)	Television display assembly power source circuit (See TELEVISION DISPLAY POWER SOURCE CIRCUIT )

INSPECT RADIO RECEIVER ASSEMBLY

Disconnect the E62 receiver and E64* receiver connectors.

Measure the resistance of the receiver.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection

Specified Condition

E62-5 (ATX+) - E62-15 (ATX-)

60 to 80 Ω

E64-9 (TXM+) - E64-10 (TXM-)⁽¹⁾

60 to 80 Ω

⁽¹⁾	with Rear seat entertainment system

Fig 2: Identifying E62 And E64 Receiver Connectors

NG: REPLACE RADIO RECEIVER ASSEMBLY

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - 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 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: Identifying 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
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 STEREO COMPONENT AMPLIFIER ASSEMBLY

OK: END