Last Modified: 4-30-2014 6.6 D Doc ID: RM000001BCC000X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: SLIDING ROOF: SLIDING ROOF SYSTEM: DIAGNOSIS SYSTEM; 2006 MY LX470 [05/2005 -        ]

DIAGNOSIS SYSTEM

1. DESCRIPTION

(a) ECU data in this system can be read through the DLC3 on the vehicle.

Therefore, when there seems to be trouble in this system, use the intelligent tester (with CAN VIM) to check and troubleshoot it.

2. CHECK DLC3

(a) The vehicle's ECM uses ISO 9141-2 for communication.

The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.

Symbols (Terminal No.)

Terminal Description

Condition

Specified Condition

CG (4) - Body ground

Chassis ground

Always

Below 1 Ω

SG (5) - Body ground

Signal ground

Always

Below 1 Ω

SIL (7) - SG (5)

Bus "+" line

During transmission

Pulse generation

BAT (16) - Body ground

Battery positive

Always

10 to 14 V

HINT:

If the display shows "UNABLE TO CONNECT TO VEHICLE" when the cable of the intelligent tester is connected to the DLC3, the ignition switch is turned ON and the intelligent tester is operated, there is a problem either on the vehicle side or tester side.

  • If communication is possible when the tester is connected to another vehicle, inspect DLC3 on the original vehicle.
  • If communication still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself, so consult the service department listed in the tester's instruction manual.