Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Lost Communication With ECM/PCM "A" (U0100,...,U1117)

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)

U0101

Lost Communication with TCM

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)

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)

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)

U0129

Lost Communication with Brake System Control Module

The main body ECU (multiplex network body ECU) does not receive data from the skid control ECU (brake actuator assembly) for approximately 10 seconds or more.

• CAN communication system
• Skid control ECU (brake actuator assembly)

Main body ECU (multiplex network body ECU)

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)

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)

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)

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)

U0182

Lost Communication with AFS

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

• CAN communication system
• Headlight ECU sub-assembly LH

Main body ECU (multiplex network body ECU)

U0199

Lost Communication with "Door Control Module A"

The main body ECU (multiplex network body ECU) does not receive data from the outer mirror control ECU assembly RH for approximately 10 seconds or more.

• CAN communication system
• Outer mirror control ECU assembly RH

Main body ECU (multiplex network body ECU)

U0200

Lost Communication with "Door Control Module B"

The main body ECU (multiplex network body ECU) does not receive data from the outer mirror control ECU assembly LH for approximately 10 seconds or more.

• CAN communication system
• Outer mirror control ECU assembly LH

Main body ECU (multiplex network body ECU)

U0208

Lost Communication with "Seat Control Module A"

The main body ECU (multiplex network body ECU) does not receive data from the position control ECU assembly (driver seat) for approximately 10 seconds or more.

• CAN communication system
• Position control ECU assembly (driver seat)

Main body ECU (multiplex network body ECU)

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)

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)

U1106

Lost Communication with Electric Parking Brake Module

The main body ECU (multiplex network body ECU) does not receive data from the skid control ECU (brake actuator assembly) for approximately 10 seconds or more.

• CAN communication system
• Skid control ECU (brake actuator assembly)

Main body ECU (multiplex network body ECU)

U1115

Lost Communication with Tilt & Telescopic Module

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

• CAN communication system
• Multiplex tilt and telescopic ECU

Main body ECU (multiplex network body ECU)

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)

1.

CLEAR DTC

2.

CHECK FOR DTC

USE SIMULATION METHOD TO CHECK

GO TO CAN COMMUNICATION SYSTEM