Last Modified: 4-30-2014 6.6 J Doc ID: RM0000017KW003X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM: AVC-LAN Circuit; 2006 MY LX470 [05/2005 -        ]

AVC-LAN Circuit

DESCRIPTION

  • Each unit of the "REAR VIEW MONITOR SYSTEM" connected with AVC-LAN (communication bus) transfers the signal of each switch by communication.
  • When short to +B or short to ground occurs in this AVC-LAN, the "REAR VIEW MONITOR SYSTEM" will not function normally as the communication is discontinued.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK WIRE HARNESS (TELEVISION CAMERA ECU - NAVIGATION ECU)

(a) Disconnect the T31 and N3 ECU connectors.

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

Standard resistance:

Tester Connection

Specified Condition

T31-36 (TX1+) - N3-5 (TX+)

Below 1 Ω

T31-35 (TX1-) - N3-10 (TX-)

Below 1 Ω

T31-36 (TX1+) - Body ground

10 kΩ or higher

T31-35 (TX1-) - Body ground

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

2.

CHECK WIRE HARNESS (TELEVISION CAMERA ECU - MULTI-DISPLAY)

(a) Disconnect the T31 ECU connector.

(b) Disconnect the M5 display connector.

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

Standard resistance:

Tester Connection

Specified Condition

T31-29 (TX+) - M5-4(TX1+)

Below 1 Ω

T31-30 (TX-) - M5-5 (TX1-)

Below 1 Ω

T31-29 (TX+) - Body ground

10 kΩ or higher

T31-30 (TX-) - Body ground

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE