Dtc U110B Lost Communication With Parking Assist Control Module B

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 (PARKING ASSIST ECU CAN BRANCH WIRE)

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)

DTC U110B Lost Communication with Parking Assist Control Module "B"

DESCRIPTION

DTC CodeDTC Detection ConditionTrouble Area
U110BThere is no communication from the parking assist ECU.
Power source circuit of parking assist ECU
Parking assist ECU CAN branch wire or connector
Parking assist ECU
For vehicles with a side monitor system.

WIRING DIAGRAM

Dtc U110B Lost Communication With Parking Assist Control Module B. 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 engine 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 vehicle 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 (PARKING ASSIST ECU CAN BRANCH WIRE)
Dtc U110B Lost Communication With Parking Assist Control Module B. NETWORKING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the F76 parking assist ECU connector.

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

  • Standard Resistance:
  • Tester ConnectionSwitch ConditionSpecified Condition
    F76-40 (CANH) - F76-39 (CANL)Ignition switch off54 to 69 Ω
Text in Illustration
*aRear view of wire harness connector
(to Parking Assist ECU)
NG
REPAIR OR REPLACE PARKING ASSIST ECU CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)
OK
4.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)
Dtc U110B Lost Communication With Parking Assist Control Module B. 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 F75 parking assist ECU connector.

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    F75-1 (+B) - Body groundAlways11 to 14 V
    F75-9 (ACC) - Body groundIgnition switch ACC11 to 14 V
    F75-8 (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
    F75-4 (GND1) - Body groundAlwaysBelow 1 Ω
Text in Illustration
*aRear view of wire harness connector
(to Parking Assist ECU)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE PARKING ASSIST ECU ()