Toyota Tundra Service Manual: Lost Communication with Yaw Rate Sensor Module (U0123,U0126,U0129,U0142,U0155)

Toyota Tundra Service Manual / Engine, Hybrid System / Cruise Control / Lane Departure Alert System / Lost Communication with Yaw Rate Sensor Module (U0123,U0126,U0129,U0142,U0155)

DESCRIPTION

These DTCs are output when a communication malfunction occurs between the sensors and ECUs.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0123

Lost Communication with Yaw Rate Sensor Module

3 seconds after the ignition switch is turned to ON, the vehicle is being driven at 5 km/h (3 mph) or more and a communication error between the yaw rate sensor and the forward recognition camera is detected for approximately 5 seconds or more.

  • CAN communication system
  • Yaw rate and acceleration sensor (airbag sensor assembly)
  • Forward recognition camera

U0126

Lost Communication With Steering Angle Sensor Module

3 seconds after the ignition switch is turned to ON, a communication error between the spiral with sensor cable sub-assembly and the forward recognition camera is detected for approximately 5 seconds or more.

  • CAN communication system
  • Spiral with sensor cable sub-assembly
  • Forward recognition camera

U0129

Lost Communication with Brake System Control Module

3 seconds after the ignition switch is turned to ON, a communication error between the skid control ECU (brake actuator assembly) and the forward recognition camera is detected for approximately 5 seconds or more.

  • CAN communication system
  • Skid control ECU (Brake actuator assembly)
  • Forward recognition camera

U0142

Lost Communication with Body Control Module "B"

3 seconds after the ignition switch is turned to ON, a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.

  • CAN communication system
  • Main body ECU (Multiplex network body ECU)
  • Forward recognition camera

U0155

Lost Communication with Combination Meter

3 seconds after the ignition switch is turned to ON, a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more.

  • CAN communication system
  • Combination meter assembly
  • Forward recognition camera

PROCEDURE

1.

CHECK FOR DTCs

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

(e) Clear the DTCs.

(f) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(g) Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

(h) Check the DTCs.

Result

Proceed to

DTC U0123, U0126, U0129, U0142 and U0155 are not output

A

DTC U0123, U0126, U0129, U0142 or U0155 is output

B

A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM

    Terminals Of Ecu

    Lost Communication with Cruise Control Front Distance Range Sensor (U0235)

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