Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000017WU006X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1211; Driver Door ECU Communication Stop; 2007 MY LX470 [08/2006 -        ]

DTC

B1211

Driver Door ECU Communication Stop

DESCRIPTION

HINT:

"Driver door ECU" refer to the power window regulator master switch assembly.

  • This DTC is output when communication stops between the power window regulator master switch and multiplex network body ECU (main).

DTC No.

DTC Detection Condition

Trouble Area

B1211

No signal from power window regulator master switch assembly for more than 10 seconds.
  • Power window regulator master switch assembly
  • 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 POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

(a) Check that the driver door window glass moves up automatically.

HINT:

In this inspection, whether or not the power window regulator master switch CPU functions normally can be diagnosed.

NG

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

OK

2.

CHECK WIRE HARNESS (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - MULTIPLEX NETWORK 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

Power window regulator master switch assembly - Multiplex network body ECU (Main)

P15-7 (MPX1) - B7-24 (MPX1)

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 POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY