Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000017WV006X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1213; Tilt and Telescopic ECU Communication Stop; 2007 MY LX470 [08/2006 -        ]

DTC

B1213

Tilt and Telescopic ECU Communication Stop

DESCRIPTION

HINT:

"Tilt and telescopic ECU" refer to the multiplex tilt and telescopic ECU.

  • This DTC is output when communication stops between the multiplex tilt and telescopic ECU and multiplex network body ECU (main).

DTC No.

DTC Detection Condition

Trouble Area

B1213

No signal from multiplex tilt and telescopic ECU for more than 10 seconds.
  • Multiplex tilt and telescopic ECU
  • Wire harness

WIRING DIAGRAM

  • Refer to DTC B1214 and 1215 2007 MY LX470 [08/2006 -        ]; MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1214,B1215; Short to B+ in Door System Communication Bus Malfunction+ .

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK MULTIPLEX TILT AND TELESCOPIC ECU

(a) Check the operation of the multiplex tilt and telescopic.

HINT:

In this inspection, whether or not the multiplex tilt and telescopic ECU CPU functions normally can be diagnosed.

NG

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU

OK

2.

CHECK WIRE HARNESS (MULTIPLEX TILT AND TELESCOPIC ECU - OUTER MIRROR CONTROL ECU ASSEMBLY AND BODY ECU (MAIN))

(a) Disconnect the ECU connectors mentioned in the table below.

(b) Check the continuity of the wire harness between the connectors.

Wire harness side connector of ECU

Terminal

Multiplex tilt and telescopic ECU - Outer mirror control ECU assembly

T8-8 (MPX1) - R30-13 (MPX1)

Multiplex tilt and telescopic ECU - Multiplex network body ECU (Main)

T8-3 (MPX1) - B7-23 (MPX2)

OK:

There is continuity between the connectors.

HINT:

If there is an open in any wire harness, repair it.

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU