Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - NETWORKING

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT POWER WINDOW REGULATOR MOTOR)

CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (BATTERY VOLTAGE AND BODY GROUND)

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY

CHECK FOR DTC

DTC B2321 Driver Side Door ECU Communication Stop

DESCRIPTION

This DTC is stored when LIN communication between the front power window regulator motor LH*1 (RH*2) and main body ECU (cowl side junction block LH) stops for 10 seconds or more.


  • HINT:
*1: for LHD
*2: for RHD
DTC CodeDTC Detection ConditionTrouble Area
B2321No communication between the front power window regulator motor LH*1 or RH*2 and main body ECU (cowl side junction block LH) for 10 seconds or more.
Front power window regulator motor LH*1
Front power window regulator motor RH*2
Main body ECU (cowl side junction block LH)
Harness or connector

WIRING DIAGRAM

Dtc B2321 Driver Side Door 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 stored when the communication between the front power window regulator motor and main body ECU (cowl side junction block LH) stops.
1.CLEAR DTC

Clear the DTC ().

NEXT
2.CHECK FOR DTC

Recheck for DTCs ().

Result
ResultProceed to
DTC B2321 is output A
DTC B2321 is not outputB
B
USE SIMULATION METHOD TO CHECK ()
A
3.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT POWER WINDOW REGULATOR MOTOR)
Dtc B2321 Driver Side Door Ecu Communication Stop. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the E3 ECU connector.

Disconnect the I12*1 or I4*2 motor connector.

  • HINT:
*1: for LHD
*2: for RHD

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    E3-10 (LIN2) - I12-9 (LIN)*1 or I4-9 (LIN)*2AlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
4.CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (BATTERY VOLTAGE AND BODY GROUND)
Dtc B2321 Driver Side Door Ecu Communication Stop. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the I12*1 or I4*2 motor connector.

  • HINT:
*1: for LHD
*2: for RHD

Measure the resistance and voltage according to the value(s) in the tables below.

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    I12-1 (GND)*1 or I4-1 (GND)*2 - Body groundAlwaysBelow 1 Ω
  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    I12-2 (B)*1 or I4-2 (B)*2 - Body groundAlways11 to 14 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
5.REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY

Temporarily replace the front power window regulator motor LH*1 or RH*2 with a new or normally functioning one ().

  • HINT:
*1: for LHD
*2: for RHD

Clear the DTC ().

NEXT
6.CHECK FOR DTC

Recheck for DTCs ().

Result
ResultProceed to
DTC B2321 is not outputA
DTC B2321 is outputB
B
REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
A
END (FRONT POWER WINDOW REGULATOR MOTOR IS DEFECTIVE)
NETWORKING
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
LIN COMMUNICATION SYSTEM