Toyota CH-R Service Manual: Control Module Communication Bus OFF (U0073,U0100,U0129,U0142)

Toyota CH-R Service Manual / Lighting (ext) / Lighting System / Control Module Communication Bus OFF (U0073,U0100,U0129,U0142)

DESCRIPTION

These DTCs are stored when the CAN communication system is malfunctioning.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

U0073

Control Module Communication Bus OFF

Lost communication with CAN communication line

CAN communication system

-

U0100

Lost Communication with ECM / PCM "A"

Lost communication with ECM
  • CAN communication system
  • ECM

-

U0129

Lost Communication with Brake System Control Module

Lost communication with brake actuator assembly (skid control ECU)
  • CAN communication system
  • Brake actuator assembly (skid control ECU)

-

U0142

Lost Communication with Body Control Module "B"

Lost communication with main body ECU (multiplex network body ECU)
  • CAN communication system
  • Main body ECU (multiplex network body ECU)

-

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Click here

Body Electrical > HL AutoLeveling > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Turn the ignition switch to ON.

(b) Check for DTCs.

Click here

Body Electrical > HL AutoLeveling > Trouble Codes

OK:

DTCs are not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

    Left Headlight ECU Variation Error (B2456)
    DESCRIPTION This DTC is output when a headlight ECU sub-assembly LH that is incompatible with the vehicle is installed. The headlight ECU sub-assembly LH outputs DTC B2456. DTC No. ...

    Lost Communication With Headlamp Control Module "B" (U0242)
    DESCRIPTION The headlight ECU sub-assembly LH stores this DTC when the headlight ECU sub-assembly RH detects an internal malfunction or if a communication malfunction occurs between headlight ECU ...

    Other materials:

    Toyota CH-R Service Manual > Horn System: Precaution
    PRECAUTION IGNITION SWITCH EXPRESSION HINT: The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ignition Switch (Position) Engine S ...

    Toyota CH-R Service Manual > Horn: Relay
    On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT HORN RELAY ASSEMBLY (a) Check the resistance. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition ...

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2024 Copyright www.tochr.net
    0.0091