Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM10000000215N1
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 - 11/2024]
Title: LIGHTING (EXT): LIGHTING SYSTEM: U0100,U0101,U0120,U0126,U0129,U0151,U0155,U0163,U0164,U0208,U0230,U023A,U0293,U0327,U1103,U1104,U1106,U1117; Lost Communication With ECM/PCM "A"; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - 11/2024]

DTC

U0100

Lost Communication With ECM/PCM "A"

DTC

U0101

Lost Communication with TCM

DTC

U0120

Lost Communication With Starter / Generator Control Module

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DTC

U0129

Lost Communication with Brake System Control Module

DTC

U0151

Lost Communication with Restraints Control Module

DTC

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

DTC

U0163

Lost Communication with Navigation Control Module

DTC

U0164

Lost Communication with HVAC Control Module

DTC

U0208

Lost Communication with "Seat Control Module A"

DTC

U0230

Lost Communication with Rear Gate Module

DTC

U023A

Lost Communication With Image Processing Module "A"

DTC

U0293

Lost Communication With Hybrid Powertrain Control Module

DTC

U0327

Software Incompatibility with Vehicle Security Control Module

DTC

U1103

Lost Communication with Stop and Start Control Module

DTC

U1104

Lost Communication with Driving Support ECU

DTC

U1106

Lost Communication with Electric Parking Brake Module

DTC

U1117

Lost Communication with Accessory Gateway

DESCRIPTION

These DTCs are stored if a CAN communication malfunction occurs between the main body ECU (multiplex network body ECU) and other ECUs.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Note

U0100

Lost Communication With ECM/PCM "A"

The main body ECU (multiplex network body ECU) does not receive data from the ECM for approximately 10 seconds or more.
  • CAN communication system
  • ECM
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0101

Lost Communication with TCM

for HV Model:

  • The main body ECU (multiplex network body ECU) does not receive data from the hybrid vehicle control ECU assembly for approximately 10 seconds or more.

for Gasoline Model:

  • The main body ECU (multiplex network body ECU) does not receive data from the ECM for approximately 10 seconds or more.

for HV Model:

  • CAN communication system
  • Hybrid vehicle control ECU assembly
  • Main body ECU (multiplex network body ECU)

for Gasoline Model:

  • CAN communication system
  • ECM
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0120

Lost Communication With Starter / Generator Control Module

The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for approximately 10 seconds or more.
  • CAN communication system
  • Certification ECU (smart key ECU assembly)
  • Main body ECU (multiplex network body ECU)

Main Body

w/ Smart Key System

U0126

Lost Communication with Steering Angle Sensor Module

The main body ECU (multiplex network body ECU) does not receive data from the steering sensor for approximately 10 seconds or more.
  • CAN communication system
  • Steering sensor
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0129

Lost Communication with Brake System Control Module

for HV Model:

  • The main body ECU (multiplex network body ECU) does not receive data from the brake actuator assembly (No. 2 skid control ECU) for approximately 10 seconds or more.

for Gasoline Model:

  • The main body ECU (multiplex network body ECU) 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 actuator assembly (No. 2 skid control ECU)
  • Main body ECU (multiplex network body ECU)

for Gasoline Model:

  • CAN communication system
  • Brake actuator assembly (skid control ECU)
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0151

Lost Communication with Restraints Control Module

The main body ECU (multiplex network body ECU) does not receive data from the airbag ECU assembly for approximately 10 seconds or more.
  • CAN communication system
  • Airbag ECU assembly
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

The main body ECU (multiplex network body ECU) does not receive data from the combination meter assembly for approximately 10 seconds or more.
  • CAN communication system
  • Combination meter assembly
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0163

Lost Communication with Navigation Control Module

The main body ECU (multiplex network body ECU) does not receive data from the radio and display receiver assembly for approximately 10 seconds or more.
  • CAN communication system
  • Radio and display receiver assembly
  • Main body ECU (multiplex network body ECU)

Main Body

for Radio and Display Type

U0164

Lost Communication with HVAC Control Module

The main body ECU (multiplex network body ECU) does not receive data from the air conditioning amplifier assembly for approximately 10 seconds or more.
  • CAN communication system
  • Air conditioning amplifier assembly
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0208

Lost Communication with "Seat Control Module A"

Communication stop occurs between the main body ECU (multiplex network body ECU) and position control ECU assembly continuously for 10 seconds or more.
  • CAN communication system
  • Position control ECU assembly
  • Main body ECU (multiplex network body ECU)

Main Body

w/ Memory

U0230

Lost Communication with Rear Gate Module

Communication stop occurs between the main body ECU (multiplex network body ECU) and multiplex network door ECU continuously for 10 seconds or more.
  • CAN communication system
  • Multiplex network door ECU
  • Main body ECU (multiplex network body ECU)

Main Body

w/ Power Back Door System

U023A

Lost Communication With Image Processing Module "A"

The main body ECU (multiplex network body ECU) does not receive data from the forward recognition camera for approximately 10 seconds or more.
  • CAN communication system
  • Forward recognition camera
  • Main body ECU (multiplex network body ECU)

Main Body

-

U0293

Lost Communication With Hybrid Powertrain Control Module

The main body ECU (multiplex network body ECU) 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
  • Main body ECU (multiplex network body ECU)

Main Body

for HV Model

U0327

Software Incompatibility with Vehicle Security Control Module

The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for approximately 10 seconds or more.
  • CAN communication system
  • Certification ECU (smart key ECU assembly)
  • Main body ECU (multiplex network body ECU)

Main Body

w/ Smart Key System

U1103

Lost Communication with Stop and Start Control Module

The main body ECU (multiplex network body ECU) does not receive data from the engine stop and start ECU for approximately 10 seconds or more.
  • CAN communication system
  • Engine stop and start ECU
  • Main body ECU (multiplex network body ECU)

Main Body

w/ Stop and Start System

U1104

Lost Communication with Driving Support ECU

The main body ECU (multiplex network body ECU) does not receive data from the forward recognition camera for approximately 10 seconds or more.
  • CAN communication system
  • Forward recognition camera
  • Main body ECU (multiplex network body ECU)

Main Body

-

U1106

Lost Communication with Electric Parking Brake Module

The main body ECU (multiplex network body ECU) does not receive data from the brake actuator assembly (No. 2 skid control ECU) for approximately 10 seconds or more.
  • CAN communication system
  • Brake actuator assembly (No. 2 skid control ECU)
  • Main body ECU (multiplex network body ECU)

Main Body

for HV Model

U1117

Lost Communication with Accessory Gateway

The main body ECU (multiplex network body ECU) does not receive data from the option connector (bus buffer ECU) for approximately 10 seconds or more.
  • CAN communication system
  • Option connector (bus buffer ECU)
  • Main body ECU (multiplex network body ECU)

Main Body

w/ Bus Buffer ECU

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 / Main Body / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > Main Body > Clear DTCs

NEXT

2.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Wait 10 seconds or more.

(d) Turn the Techstream on.

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

(f) Check for DTCs.

Body Electrical > Main Body > 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 - 2025 MY RAV4 HV [02/2019 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

for Gasoline Model:

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING