Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - NETWORKING

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (RELAY - MAIN BODY ECU, BATTERY AND BODY GROUND)

REPLACE DOUBLE LOCK DOOR CONTROL RELAY

CHECK FOR DTC

DTC B1249 Double Locking ECU Communication Stop

DESCRIPTION

DTC B1249 is stored when communication between the double lock door control relay and main body ECU (cowl side junction block LH) stops for more than 10 seconds.

DTC CodeDTC Detection ConditionTrouble Area
B1249No communication from the double door lock relay for more than 10 seconds.
Double lock door control relay
Main body ECU (cowl side junction block LH)
Harness or connector

WIRING DIAGRAM

Dtc B1249 Double Locking Ecu Communication Stop. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

  • NOTICE:
  • When using the intelligent tester with the ignition switch off to troubleshoot:
  • Connect the intelligent tester to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
  • HINT:
  • DTC B2325 is output when the communication between all of the following components and main body ECU (cowl side junction block LH) stops.
1.CLEAR DTC

Clear the DTC ().

NEXT
2.CHECK FOR DTC

Recheck for DTC ().

Result:
ResultProceed to
DTC B1249 is outputA
DTC B1249 is not outputB
B
USE SIMULATION METHOD TO CHECK ()
A
3.CHECK HARNESS AND CONNECTOR (RELAY - MAIN BODY ECU, BATTERY AND BODY GROUND)
Dtc B1249 Double Locking Ecu Communication Stop. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the E3 ECU connector.

Disconnect the E86 relay connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    E86-9 (MPX1) - E3-10 (LIN2)AlwaysBelow 1 Ω
    E86-9 (MPX1) - Body groundAlways10 kΩ or higher
    E3-10 (LIN2) - Body groundAlways10 kΩ or higher
    E86-14 (GND) - Body groundAlwaysBelow 1 Ω

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    E86-1 (+B) - Body groundAlways11 to 14 V
    E86-7 (CPUB) - Body groundAlways11 to 14 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
4.REPLACE DOUBLE LOCK DOOR CONTROL RELAY

Temporarily replace the double lock door control relay with a new or normally functioning one ()*1, ()*2.

  • HINT:
*1: for LHD
*2: for RHD

Clear the DTC ().

NEXT
5.CHECK FOR DTC

Recheck for DTCs ().

Result
ResultProceed to
DTC B1249 is not outputA
DTC B1249 is outputB
B
REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
A
END (DOUBLE LOCK DOOR CONTROL RELAY IS DEFECTIVE)
NETWORKING
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
LIN COMMUNICATION SYSTEM