Dtc U1115 Lost Communication With Tilt And Telescopic Module


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CHECK OPEN IN CAN BUS WIRE (MULTIPLEX TILT AND TELESCOPIC ECU BRANCH WIRE)

CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY AND BODY GROUND)

DTC U1115 Lost Communication with Tilt and Telescopic Module


DESCRIPTION


DTC Code
DTC Detection Condition
Trouble Area
U1115
There is no communication from the multiplex tilt and telescopic ECU.
  1. Power source or inside multiplex tilt and telescopic ECU
  2. Multiplex tilt and telescopic ECU CAN branch wire or connector
  3. Multiplex tilt and telescopic ECU
  1. For vehicles with power tilt and power telescopic steering column only.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Networking.Lin Communication System. Dtc U1115 Lost Communication With Tilt And Telescopic Module


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.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

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

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the airbag system.
    NOTICE:
    1. After turning the engine 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 (LandCruiser RM000003YMD00TX.html).
    2. When disconnecting the cable, some systems need to be initialized after the cable is reconnected (LandCruiser RM000003YMF011X.html).

NEXT


2.CHECK OPEN IN CAN BUS WIRE (MULTIPLEX TILT AND TELESCOPIC ECU BRANCH WIRE)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Networking.Lin Communication System. Dtc U1115 Lost Communication With Tilt And Telescopic Module

  1. Disconnect the G116 multiplex tilt and telescopic ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G116-5 (CANP) - G116-14 (CANN)
    		Engine switch off
    		54 to 64 Ω
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Multiplex Tilt and Telescopic ECU)


NG
REPAIR OR REPLACE MULTIPLEX TILT AND TELESCOPIC ECU CAN BRANCH WIRE OR CONNECTOR (CANP, CANN)
OK


3.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY AND BODY GROUND)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Networking.Lin Communication System. Dtc U1115 Lost Communication With Tilt And Telescopic Module

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

    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (LandCruiser RM000003YMF011X.html).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G116-11 (GND) - Body ground
    		Always
    		Below 1 Ω

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G116-2 (+B) - Body ground
    		Always
    		11 to 14 V
    G116-9 (ECUB) - Body ground
    		Always
    		11 to 14 V
    G116-8 (IG) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
Text in Illustration
*a
Rear view of wire harness connector
(to Multiplex Tilt and Telescopic ECU)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU (LandCruiser RM0000039SD01GX.html)