Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001G2C3
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 12/2021]
Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ Headlight ECU without AFS): U0073,U0100,U0101,U0126,U0129,U0142,U0155,U0242,U0293; Control Module Communication Bus Off; 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]

DTC

U0073

Control Module Communication Bus Off

DTC

U0100

Lost Communication with ECM / PCM "A"

DTC

U0101

Lost Communication with TCM

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DTC

U0129

Lost Communication with Brake System Control Module

DTC

U0142

Lost Communication with Body Control Module "B"

DTC

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

DTC

U0242

Lost Communication With Headlamp Control Module "B"

DTC

U0293

Lost Communication with Hybrid Vehicle Control System

DESCRIPTION

These DTCs are stored if a CAN communication malfunction occurs between the headlight ECU sub-assembly LH and other ECUs.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Note

U0073

Control Module Communication Bus Off

The headlight ECU sub-assembly LH does not send/receive data.
  • CAN communication system
  • Headlight ECU sub-assembly LH

HL AutoLeveling

-

U0100

Lost Communication with ECM / PCM "A"

The headlight ECU sub-assembly LH does not receive data from the ECM for approximately 10 seconds or more.
  • CAN communication system
  • ECM
  • Headlight ECU sub-assembly LH

HL AutoLeveling

for Gasoline Model

U0101

Lost Communication with TCM

for HV Model:

  • The headlight ECU sub-assembly LH does not receive data from the hybrid vehicle control ECU assembly for approximately 10 seconds or more.

for Gasoline Model:

  • The headlight ECU sub-assembly LH does not receive data from the ECM for approximately 10 seconds or more.

for HV Model:

  • CAN communication system
  • Hybrid vehicle control ECU assembly
  • Headlight ECU sub-assembly LH

for Gasoline Model:

  • CAN communication system
  • ECM
  • Headlight ECU sub-assembly LH

HL AutoLeveling

-

U0126

Lost Communication with Steering Angle Sensor Module

The headlight ECU sub-assembly LH does not receive data from the steering sensor for approximately 10 seconds or more.
  • CAN communication system
  • Steering sensor
  • Headlight ECU sub-assembly LH

HL AutoLeveling

-

U0129

Lost Communication with Brake System Control Module

for HV Model:

  • The headlight ECU sub-assembly LH does not receive data from the brake booster with master cylinder assembly (skid control ECU) for approximately 10 seconds or more.

for Gasoline Model:

  • The headlight ECU sub-assembly LH does not receive data from the brake actuator assembly (skid control ECU) for approximately 10 seconds or more.

for HV Model:

  • CAN communication system
  • Brake booster with master cylinder assembly (skid control ECU)
  • Headlight ECU sub-assembly LH

for Gasoline Model:

  • CAN communication system
  • Brake actuator assembly (skid control ECU)
  • Headlight ECU sub-assembly LH

HL AutoLeveling

-

U0142

Lost Communication with Body Control Module "B"

The headlight ECU sub-assembly LH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Headlight ECU sub-assembly LH

HL AutoLeveling

-

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

The headlight ECU sub-assembly LH does not receive data from the combination meter assembly for approximately 30 seconds or more.
  • CAN communication system
  • Combination meter assembly
  • Headlight ECU sub-assembly LH

HL AutoLeveling

-

U0242

Lost Communication With Headlamp Control Module "B"

The headlight ECU sub-assembly LH does not receive data from the headlight ECU sub-assembly RH for approximately 10 seconds or more.
  • CAN communication system
  • Headlight ECU sub-assembly RH
  • Headlight ECU sub-assembly LH

HL AutoLeveling

-

U0293

Lost Communication with Hybrid Vehicle Control System

The headlight ECU sub-assembly LH does not receive data from the hybrid vehicle control ECU assembly for approximately 10 seconds or more.
  • CAN communication system
  • Hybrid vehicle control ECU assembly
  • Headlight ECU sub-assembly LH

HL AutoLeveling

for HV Model

PROCEDURE

1.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / HL AutoLeveling / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > HL AutoLeveling > Clear DTCs

NEXT

2.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Wait 30 seconds or more.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.

(f) Check for DTCs.

Body Electrical > HL AutoLeveling > Trouble Codes

OK:

DTCs are not output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

for HV Model:

Click here 2019 MY RAV4 HV [11/2018 - 02/2019]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING 2019 - 2024 MY RAV4 HV [02/2019 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

for Gasoline Model:

Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING