Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Be sure to read DESCRIPTION before performing the following procedures.

CHECK RADIO AND NAVIGATION ASSEMBLY POWER SOURCE CIRCUIT
Refer to the radio and navigation assembly power source circuit (See RADIO AND NAVIGATION ASSEMBLY POWER SOURCE CIRCUIT ).

If the power source circuit is operating normally, proceed to the next step.

INSPECT RADIO AND NAVIGATION ASSEMBLY

Disconnect the radio and navigation assembly connector.

Fig 1: Identifying Radio And Navigation Assembly Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Measure the resistance according to the value(s) in the table below.

Standard resistance

RADIO AND NAVIGATION ASSEMBLY

Tester connection	Condition	Specified condition
ATX+ (F9-5) - ATX- (F9-15)	Always	60 to 80 Ω

NG: REPLACE RADIO AND NAVIGATION ASSEMBLY

OK: GO TO NEXT STEP

IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

Enter the diagnostic mode.
Press the "LAN Mon" switch to change to "LAN Monitor" mode.

Fig 2: Diagnosis MENU Screen Display - LAN Monitor Mode
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Identify the component which has stored this code.

COMPONENT WHICH HAS STORED THIS CODE

Display	Component
DSP-AMP	Stereo component amplifier

HINT:

"NAVI" is the component which has stored this code in the example shown in Fig 2.

CHECK HARNESS AND CONNECTOR
HINT:

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 radio and navigation assembly and the component which has stored this code.
  1. Disconnect all connectors between the radio and navigation assembly and the component which has stored this code.
  2. Check for an open or short in the AVC-LAN circuit between the radio and navigation assembly and the component which has stored this code.
    
    Fig 3: AVC-LAN Wiring Diagram
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  OK: There is no open or short circuit.
  
  NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
  
  OK: GO TO NEXT STEP
REPLACE RADIO AND NAVIGATION ASSEMBLY
1. Replace the radio and navigation assembly with a normal one and check if the same problem occurs again.
  OK: Same problem does not occur.
  
  NG: REPLACE COMPONENT WHICH HAS STORED THIS CODE
  
  OK: END