Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT RADIO AND NAVIGATION ASSEMBLY

Disconnect the radio and navigation assembly connectors.

Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Condition	Specified condition
ATX+ (R12-5) - ATX- (R12-15)	Always	60 to 80
TXM+ (R11-9) - TXM- (R11-10)	Always	60 to 80

Fig 1: Disconnecting Radio & Navigation Assembly Connectors

NG: REPLACE RADIO AND NAVIGATION ASSEMBLY

OK: GO TO NEXT STEP.

CHECK HARNESS AND CONNECTOR
HINT:

For details of the connectors, refer to TERMINALS OF ECU .
1. Referring to Fig 2 below, check all AVC-LAN circuits.
  1. Check for an open or short in all AVC-LAN circuits.
    OK:
    
    There is no open or short circuit.
    
    Fig 2: AVC-LAN Wiring Diagram
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: RETURN TO THE ORIGINAL INSPECTION BECAUSE THE CHECK RESULT IS NORMAL