Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - NETWORKING

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PRECAUTION

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK FOR OPEN IN CAN BUS WIRE (OUTER MIRROR CONTROL ECU ASSEMBLY CAN BRANCH WIRE)

CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND)

DTC U0199 Lost Communication with "Door Control Module A"

DESCRIPTION

DTC CodeDTC Detection ConditionTrouble Area
U0199There is no communication from the outer mirror control ECU.
Power source circuit of outer mirror control ECU assembly
Outer mirror control ECU assembly CAN branch wire or connector
Outer mirror control ECU assembly
For vehicles with a seat memory.

WIRING DIAGRAM

Dtc U0199 Lost Communication With Door Control Module A. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

  • NOTICE:
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • HINT:
  • Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
1.PRECAUTION
  • NOTICE:
  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work ().
NEXT
2.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.

  • CAUTION:
  • For vehicles with an SRS system:
  • Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
  • NOTICE:
  • When disconnecting the cable, some systems need to be initialized after the cable is reconnected ().
NEXT
3.CHECK FOR OPEN IN CAN BUS WIRE (OUTER MIRROR CONTROL ECU ASSEMBLY CAN BRANCH WIRE)
Dtc U0199 Lost Communication With Door Control Module A. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the I24 outer mirror control ECU assembly connector.

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

  • Standard Resistance:
  • Tester ConnectionSwitch ConditionSpecified Condition
    I24-1 (CANH) - I24-21 (CANL)Ignition switch off54 to 69 Ω
Text in Illustration
*aFront view of wire harness connector
(to Outer Mirror Control ECU Assembly)
NG
REPAIR OR REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)
OK
4.CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND)
Dtc U0199 Lost Communication With Door Control Module A. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Connect the cable to the negative (-) battery terminal.

  • NOTICE:
  • When disconnecting the cable, some systems need to be initialized after the cable is reconnected ().

Disconnect the I23 outer mirror control ECU assembly connector.

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    I23-3 (B) - Body groundAlways11 to 14 V
    I23-4 (ACC) - Body groundIgnition switch ACC11 to 14 V

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    I23-9 (GND) - Body groundAlwaysBelow 1 Ω
Text in Illustration
*aFront view of wire harness connector
(to Outer Mirror Control ECU Assembly)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY ()
NETWORKING
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
CAN COMMUNICATION SYSTEM for RHD