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 (CLEARANCE WARNING ECU ASSEMBLY CAN BRANCH WIRE)

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BATTERY AND BODY GROUND)

DTC U1110 Lost Communication with Clearance Sonar Module

DESCRIPTION

DTC CodeDTC Detection ConditionSpecified Condition
U1110There is no communication from the clearance warning ECU assembly.
Power source circuit of clearance warning ECU assembly
Clearance warning ECU assembly CAN branch wire or connector
Clearance warning ECU assembly
For vehicles with the TOYOTA parking assist-sensor system and without the side monitor system.

WIRING DIAGRAM

Dtc U1110 Lost Communication With Clearance Sonar Module. 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 (CLEARANCE WARNING ECU ASSEMBLY CAN BRANCH WIRE)
Dtc U1110 Lost Communication With Clearance Sonar Module. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the F12 clearance warning ECU assembly connector.

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

  • Standard Resistance:
  • Tester ConnectionSwitch ConditionSpecified Condition
    F12-3 (CANH) - F12-5 (CANL)Ignition switch off54 to 69 Ω
Text in Illustration
*aFront view of wire harness connector
(to Clearance Warning ECU Assembly)
NG
REPAIR OR REPLACE CLEARANCE WARNING ECU ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)
OK
4.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BATTERY AND BODY GROUND)
Dtc U1110 Lost Communication With Clearance Sonar Module. 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 ().

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

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    F12-15 (IG) - Body groundIgnition switch ON11 to 14 V

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    F12-17 (GND1) - Body groundAlwaysBelow 1 Ω
Text in Illustration
*aFront view of wire harness connector
(to Clearance Warning ECU Assembly)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE CLEARANCE WARNING ECU ASSEMBLY ()
NETWORKING
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
CAN COMMUNICATION SYSTEM for LHD