Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

IDENTIFY THE 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 the mode to "Detailed Information Mode".
3. Identify the component shown by the sub-code.
  HINT:
  - "P190" set by the radio receiver is 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 CHART

Component	Proceed to
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.

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

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
E103-5 (ATX+) - E103-15 (ATX-)	Always	60 to 80 Ω

NG: REPLACE RADIO RECEIVER (See REMOVAL )

Fig 2: Identifying Radio Receiver Connector Terminals

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 Terminals of ECU (See TERMINALS OF ECU ).
1. Referring to the following AVC-LAN Wiring Diagram, check the AVC-LAN circuit between the radio receiver and the component shown by the sub-code.
  1. Disconnect all connectors between the radio receiver and the component shown by the subcode.
  2. 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 known good one and check if the same problem occurs again.
  OK: Same problem does not occur.
  
  NG: REPLACE RADIO RECEIVER (See REMOVAL )
  
  OK: END