Toyota CH-R Service Manual: Lost Communication with Lateral Acceleration Sensor Module (U0124)

Toyota CH-R Service Manual / K114 Cvt / Continuously Variable Transaxle System / Lost Communication with Lateral Acceleration Sensor Module (U0124)

DESCRIPTION

The ECM receives signals sent from the airbag sensor assembly (yaw rate and acceleration sensor) via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding ECU or sensor.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

U0124

Lost Communication with Lateral Acceleration Sensor Module

When the ignition switch is turned ON, there is no communication between the ECM and airbag sensor assembly (yaw rate and acceleration sensor) for 1.25 seconds or more (1 trip detection logic).
  • CAN communication system
  • Airbag sensor assembly (Yaw rate and acceleration sensor)
  • ECM

Comes on

DTC stored

PROCEDURE

1.

CLEAR DTC AND PERFORM ROAD TEST

(a) Clear the DTCs.

Click here

Powertrain > Engine and ECT > Clear DTCs

HINT:

Write down the currently output DTCs before clearing them.

(b) Start the engine and drive the vehicle at a low speed.

NEXT

2.

CHECK DTC OUTPUT (DTC U0124)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

(e) Read the DTCs using the Techstream.

Result

Proceed to

DTC U0124 is not output

A

DTC U0124 is output

B
A

CHECK FOR INTERMITTENT PROBLEMS

B

GO TO CAN COMMUNICATION SYSTEM

    Pressure Control Solenoid "K" Electrical (P282B)
    DESCRIPTION According to current control by the ECM, the shift solenoid valve SLS controls secondary pulley pressure and belt clamping pressure in accordance with the input shaft torque. ...

    Pressure Control Solenoid "J" Electrical (Shift Solenoid Valve SLP) (P2822)
    DESCRIPTION According to current control by the ECM, the shift solenoid valve SLP controls primary pulley pressure in accordance with the requested gear ratio to perform gear ratio changes. ...

    Other materials:

    Toyota CH-R Service Manual > Lighting (ext): Automatic High Beam Main Switch
    Components COMPONENTS ILLUSTRATION *1 AUTO HIGH BEAM SWITCH *2 INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY Removal REMOVAL PROCEDURE 1. REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY Click here 2. REMOVE AUTO HIGH BEAM ...

    Toyota CH-R Service Manual > Audio And Visual System(for Radio Receiver Type): CD cannot be Inserted / Played or CD is Ejected Right After Insertion
    PROCEDURE 1. CHECK IF A PROPER CD IS INSERTED (a) Make sure that the CD is an audio CD or a CD with an MP3 or WMA file, and that it is not deformed, flawed, stained, deteriorated or otherwise defective. OK: CD is normal. HINT: Translucent or uniquely- ...

    Toyota C-HR (AX20) 2023-2025 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.009