Inspection Procedure

IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE
1. Enter the diagnostic mode.
  
  Fig 1: Identifying Diagnostic Mode
  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 " (See ).

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 REFERENCE CHART

Component	Proceed to
"Bluetooth" handsfree module (19D)	A
Except "Bluetooth" handsfree module	B

A: REPLACE RADIO RECEIVER ASSEMBLY

B: 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 REFERENCE CHART

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

INSPECT RADIO RECEIVER ASSEMBLY

Disconnect the E62 receiver connector.
Measure the resistance according to the value(s) in the table below.

Standard Resistance

STANDARD RESISTANCE REFERENCE CHART

Tester Connection	Specified Condition
5 (ATX+) - 15 (ATX-)	60 to 80 Ω

NG: REPLACE RADIO RECEIVER ASSEMBLY

Fig 2: Identifying E62 Receiver Connector

OK: Go to next step

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - 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 " (See ).
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 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 RADIO RECEIVER ASSEMBLY

OK: END