Toyota Avalon (XX50): Power Steering ECU Communication Stop Mode. Precaution. Problem Symptoms Table

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Power Source, Network / Networking / Can Communication System(for Hv Model) / Power Steering ECU Communication Stop Mode. Precaution. Problem Symptoms Table

Power Steering ECU Communication Stop Mode

DESCRIPTION

Detection Item

Symptom

Trouble Area

Power Steering ECU Communication Stop Mode

Any of the following conditions are met:

  • Communication stop for "Power Steering (EPS)" is indicated on the "Communication Bus Check" screen of the Techstream.

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  • Communication stop history for "Power Steering (EPS)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Power Steering (EPS)" is 6 or more.)

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  • Communication system DTCs (DTCs that start with U) that correspond to "Power Steering ECU Communication Stop Mode" in "DTC Combination Table" are output.

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  • Rack and pinion power steering gear assembly branch line or connector
  • Power source circuit of rack and pinion power steering gear assembly
  • Rack and pinion power steering gear assembly ground circuit
  • Rack and pinion power steering gear assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

NOTICE:

  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

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  • Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

    DTC check procedure: Turn the power switch on (IG) and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

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  • Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE

1.

CHECK FOR OPEN IN CAN BUS LINES (RACK AND PINION POWER STEERING GEAR ASSEMBLY BRANCH LINE)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

(b) Disconnect the C67 rack and pinion power steering gear assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

C67-10 (CANH) - C67-11 (CANL)

Cable disconnected from negative (-) auxiliary battery terminal

54 to 69 Ω

*a

Front view of wire harness connector

(to Rack and Pinion Power Steering Gear Assembly)
NG

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (RACK AND PINION POWER STEERING GEAR ASSEMBLY)
OK

2.

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

C67-7 (PGND) - Body ground

Cable disconnected from negative (-) auxiliary battery terminal

Below 1 Ω

*a

Front view of wire harness connector

(to Rack and Pinion Power Steering Gear Assembly)

(b) Reconnect the cable to the negative (-) auxiliary battery terminal.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

C67-4 (IG) - Body ground

Power switch on (IG)

11 to 14 V
OK

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

Precaution

PRECAUTION

NOTICE FOR INITIALIZATION

NOTICE:

When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected.

System

See Procedure

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*

Lighting System (for HV Model with Cornering Light)

Parking Assist Monitor System

Panoramic View Monitor System

*: When performing learning using the Techstream.

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CAN COMMUNICATION SYSTEM TROUBLESHOOTING

(a) Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

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(b) Precaution for steering system handling

(1) Be careful when replacing parts. Incorrect replacement could affect the performance of the steering system and result in hazardous driving.

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(c) Precaution for SRS airbag system handling

NOTICE:

This vehicle is equipped with a Supplemental Restraint System (SRS) which includes parts such as airbags for the driver and front passenger. Failure to carry out service operations in the correct sequence could cause unexpected SRS deployment during servicing and may cause a serious accident. Before servicing (including removal or installation of parts, inspection or replacement), be sure to read Precaution for SRS.

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(d) Precaution for when disconnecting a wire harness from a CAN junction connector

(1) When disconnecting a wire harness from a CAN junction connector, use tape or tags to identify each connector and make sure to reconnect each connector to its original location on the CAN junction connector.

HINT:

  • Reconnecting a connector to a location other than its original location on the CAN junction connector will not affect system performance. However, reconnecting connectors to their original locations makes future maintenance easier and avoids negative effects on wire harnesses, such as excessive tension.
  • For information on how to identify the ECUs or sensors connected to the CAN junction connector, refer to Terminals of ECU.

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(e) Bus line repair

(1) After repairing a bus line with solder, wrap the repaired area with electrical tape.

*a

Soldered Area to Be Wrapped with Electrical Tape

NOTICE:

  • When installing, make sure that these lines are twisted, because CAN bus lines are likely to be influenced by electrical noise if the bus lines are not twisted.
  • Ensure that there is no gap between the CANH wire and CANL wire.
  • Make sure that the distance between the first twist of the wires and the connector is less than 80 mm (3.15 in).
  • When repairing the CAN bus lines, do not change the length of the lines. (Make sure that the length of the CANH bus line and CANL bus line are the same.)

(2) Do not use bypass wiring between connectors.

*a

Bypass Wire

NOTICE:

  • The ability of the twisted bus lines to resist interference will be lost if bypass wiring is used.
  • Do not use a twisted pair of wires for bypass wiring.

(f) Connector handling

(1) When checking resistance with a tester, insert the tester probes from the backside (harness side) of the connector.

*a

Tester Probe

(2) When it is not possible to insert the tester from the backside of the connector, using service wires, measure from the front side of the connector.

*a

Service Wire

(g) Precaution for when replacing a gateway function equipped ECU (sub bus monitoring ECU)

(1) When replacing a gateway equipped function ECU (sub bus monitoring ECU) with one which was installed to another vehicle, perform initialization of the sub bus monitoring ECU in order to clear stored bus information.

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NOTICE:

If the stored bus information does not match the current sub bus configuration, DTCs may be stored and fail-safe functions may operate.

HINT:

It is not necessary to perform initialization of a gateway monitoring ECU (sub bus monitoring ECU) when using a sub bus monitoring ECU which was installed to another vehicle with the same sub bus configuration.

(h) Precautions for when a gateway function equipped ECU (sub bus monitor ECU) detects communication DTCs for ECUs not connected to the ECU

(1) Refer to precautions when replacing a gateway function equipped ECU (sub bus monitoring ECU) and initialize the connection information of the ECU.

(2) Clear the DTCs and check that no DTCs are output.

(i) Difference between genuine navigation receivers/radio and display receivers and optional navigation receivers/radio and display receivers

(1) Some optional navigation receivers/radio and display receivers are available as CAN compatible devices. Be aware that some optional navigation receivers/radio and display receivers do not have the same diagnostic features or characteristics of genuine navigation receivers/radio and display receivers.

NOTICE:

  • Optional navigation receivers/radio and display receivers receive data from the CAN communication system. However, most optional navigation receivers/radio and display receivers do not send signals to the CAN bus main line.
  • Most optional navigation receivers/radio and display receivers will not be displayed on the "CAN Bus Check" screen of the Techstream.
  • When checking for DTCs using the Techstream, DTCs for optional navigation receivers/radio and display receivers will not be displayed on the Techstream.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

    Click here

Result List of How to Proceed with Troubleshooting

Symptom

Suspected Area

Link

Either of the following:

  • The problem symptom is that of Problem Symptom Pattern B and the suspected area is in Bus 1.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 1 is 70 Ω or more.

Open in Bus 1 Main Bus Line

Either of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short between CAN bus lines (CANH and CANL) in Bus 1 is suspected.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 1 is below 54 Ω.

Short in Bus 1 Lines

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to +B in a CAN bus line (CANH or CANL) in Bus 1 is suspected.
  • Resistance between CANH and +B in Bus 1 is below 6 kΩ.
  • Resistance between CANL and +B in Bus 1 is below 6 kΩ.

Short to +B in Bus 1 Line

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to ground in a CAN bus line (CANH or CANL) in Bus 1 is suspected.
  • Resistance between CANH and ground in Bus 1 is below 200 Ω.
  • Resistance between CANL and ground in Bus 1 is below 200 Ω.

Short to GND in Bus 1 Line

Resistance between CANH and CANL is normal in Bus 1 and the problem symptom pattern in How to Use "Communication Bus Check" Screen in Inspection matches the symptoms when there is an open in one wire of a branch line in Bus 1.

Open in One Side of Bus 1 Branch Line

Either of the following:

  • The problem symptom is that of Problem Symptom Pattern B and the suspected area is in Bus 2.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 2 is 70 Ω or more.

Open in Bus 2 Main Bus Line

Either of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short between CAN bus lines (CANH and CANL) in Bus 2 is suspected.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 2 is below 54 Ω.

Short in Bus 2 Lines

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to +B in a CAN bus line (CANH or CANL) in Bus 2 is suspected.
  • Resistance between CANH and +B in Bus 2 is below 6 kΩ.
  • Resistance between CANL and +B in Bus 2 is below 6 kΩ.

Short to +B in Bus 2 Line

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to ground in a CAN bus line (CANH or CANL) in Bus 2 is suspected.
  • Resistance between CANH and ground in Bus 2 is below 200 Ω.
  • Resistance between CANL and ground in Bus 2 is below 200 Ω.

Short to GND in Bus 2 Line

Resistance between CANH and CANL is normal in Bus 2 and the problem symptom pattern in How to Use "Communication Bus Check" Screen in Inspection matches the symptoms when there is an open in one wire of a branch line in Bus 2.

Open in One Side of Bus 2 Branch Line

Either of the following:

  • The problem symptom is that of Problem Symptom Pattern B and the suspected area is in Bus 3.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 3 is 70 Ω or more.

Open in Bus 3 Main Bus Line

Either of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short between CAN bus lines (CANH and CANL) in Bus 3 is suspected.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 3 is below 54 Ω.

Short in Bus 3 Lines

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to +B in a CAN bus line (CANH or CANL) in Bus 3 is suspected.
  • Resistance between CANH and +B in Bus 3 is below 6 kΩ.
  • Resistance between CANL and +B in Bus 3 is below 6 kΩ.

Short to +B in Bus 3 Line

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to ground in a CAN bus line (CANH or CANL) in Bus 3 is suspected.
  • Resistance between CANH and ground in Bus 3 is below 200 Ω.
  • Resistance between CANL and ground in Bus 3 is below 200 Ω.

Short to GND in Bus 3 Line

Resistance between CANH and CANL is normal in Bus 3 and the problem symptom pattern in How to Use "Communication Bus Check" Screen in Inspection matches the symptoms when there is an open in one wire of a branch line in Bus 3.

Open in One Side of Bus 3 Branch Line

Either of the following:

  • The problem symptom is that of Problem Symptom Pattern B and the suspected area is in Bus 4.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 4 is 70 Ω or more.

Open in Bus 4 Main Bus Line

Either of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short between CAN bus lines (CANH and CANL) in Bus 4 is suspected.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 4 is below 54 Ω.

Short in Bus 4 Lines

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to +B in a CAN bus line (CANH or CANL) in Bus 4 is suspected.
  • Resistance between CANH and +B in Bus 4 is below 6 kΩ.
  • Resistance between CANL and +B in Bus 4 is below 6 kΩ.

Short to +B in Bus 4 Line

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to ground in a CAN bus line (CANH or CANL) in Bus 4 is suspected.
  • Resistance between CANH and ground in Bus 4 is below 200 Ω.
  • Resistance between CANL and ground in Bus 4 is below 200 Ω.

Short to GND in Bus 4 Line

Resistance between CANH and CANL is normal in Bus 4 and the problem symptom pattern in How to Use "Communication Bus Check" Screen in Inspection matches the symptoms when there is an open in one wire of a branch line in Bus 4.

Open in One Side of Bus 4 Branch Line

Either of the following:

  • The problem symptom is that of Problem Symptom Pattern B and the suspected area is in Bus 5.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 5 is 70 Ω or more.

Open in Bus 5 Main Bus Line

Either of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short between CAN bus lines (CANH and CANL) in Bus 5 is suspected.
  • Resistance between CAN bus lines (CANH and CANL) in Bus 5 is below 54 Ω.

Short in Bus 5 Lines

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to +B in a CAN bus line (CANH or CANL) in Bus 5 is suspected.
  • Resistance between CANH and +B in Bus 5 is below 6 kΩ.
  • Resistance between CANL and +B in Bus 5 is below 6 kΩ.

Short to +B in Bus 5 Line

Any of the following:

  • The problem symptom is similar to that of Problem Symptom Pattern A and a short to ground in a CAN bus line (CANH or CANL) in Bus 5 is suspected.
  • Resistance between CANH and ground in Bus 5 is below 200 Ω.
  • Resistance between CANL and ground in Bus 5 is below 200 Ω.

Short to GND in Bus 5 Line

Resistance between CANH and CANL is normal in Bus 5 and the problem symptom pattern in How to Use "Communication Bus Check" Screen in Inspection matches the symptoms when there is an open in one wire of a branch line in Bus 5.

Open in One Side of Bus 5 Branch Line

HINT:

The suspected communication stop area can be determined based on the ECUs or sensors that are displayed as not communicating on the "Communication Bus Check" screen or "Communication Bus Check (Detail)" screen and by referring to the following table.

Communication Stop Mode Table (Open in bus line or other communication stop)

Symptom

Suspected Area

Link

Either of the following is met:

  • Communication stop for "Hybrid Vehicle Control" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Hybrid Vehicle Control" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Hybrid Vehicle Control" is 6 or more.)

Hybrid Vehicle Control ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Skid Control (ABS/VSC/TRAC)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Skid Control (ABS/VSC/TRAC)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Skid Control (ABS/VSC/TRAC)" is 6 or more.)

Skid Control ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Clearance Warning (Intuitive Parking Assist)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Clearance Warning (Intuitive Parking Assist)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Clearance Warning (Intuitive Parking Assist)" is 6 or more.)

Clearance Warning ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Air Conditioning Amplifier" is 6 or more.)

Air Conditioning Amplifier Communication Stop Mode

Either of the following is met:

  • Communication stop for "Power Steering (EPS)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Power Steering (EPS)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Power Steering (EPS)" is 6 or more.)

Power Steering ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Spiral cable (Steering Angle Sensor)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Spiral cable (Steering Angle Sensor)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Spiral cable (Steering Angle Sensor)" is 6 or more.)

Steering Angle Sensor Communication Stop Mode

Either of the following is met:

  • Communication stop for "ECM (Engine)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "ECM (Engine)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "ECM (Engine)" is 6 or more.)

ECM Communication Stop Mode

Either of the following is met:

  • Communication stop for "Main Body" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Main Body" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Main Body" is 6 or more.)

Main Body ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Combination Meter" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Combination Meter" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Combination Meter" is 6 or more.)

Combination Meter ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Certification (Smart)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Certification (Smart)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Certification (Smart)" is 6 or more.)

Certification ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Airbag" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Airbag" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Airbag" is 6 or more.)

Center Airbag Sensor Communication Stop Mode

Either of the following is met:

  • Communication stop for "HL AutoLeveling/AFS/AHS (Sub)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "HL AutoLeveling/AFS/AHS (Sub)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "HL AutoLeveling/AFS/AHS (Sub)" is 6 or more.)

Headlight ECU RH Communication Stop Mode

Either of the following is met:

  • Communication stop for "HL AutoLeveling/AFS/AHS" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "HL AutoLeveling/AFS/AHS" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "HL AutoLeveling/AFS/AHS" is 6 or more.)

Headlight ECU LH Communication Stop Mode

Either of the following is met:

  • Communication stop for "Electric Parking Brake" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Electric Parking Brake" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Electric Parking Brake" is 6 or more.)

Electric Parking Brake ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Display and Navigation (AVN)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Display and Navigation (AVN)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Display and Navigation (AVN)" is 6 or more.)

Radio Receiver Assembly Communication Stop Mode

Either of the following is met:

  • Communication stop for "Blind Spot Monitor Master" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Blind Spot Monitor Master" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Blind Spot Monitor Master" is 6 or more.)

Blind Spot Monitor Sensor Communication Stop Mode

Either of the following is met:

  • Communication stop for "Panoramic View Monitor / Circumference Monitoring Camera Control Module" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Panoramic View Monitor / Circumference Monitoring Camera Control Module" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Panoramic View Monitor / Circumference Monitoring Camera Control Module" is 6 or more.)

Parking Assist ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Multiplex Tilt and Telescopic" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Multiplex Tilt and Telescopic" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Multiplex Tilt and Telescopic" is 6 or more.)

Tilt and Telescopic ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "DCM" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "DCM" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "DCM" is 6 or more.)

DCM Communication Stop Mode

Either of the following is met:

  • Communication stop for "D-Seat" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "D-Seat" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "D-Seat" is 6 or more.)

Driver Seat Control ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Front Door LH/L-Mirror (FL-Door/L-Mirror)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Front Door LH/L-Mirror (FL-Door/L-Mirror)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Front Door LH/L-Mirror (FL-Door/L-Mirror)" is 6 or more.)

Door Mirror ECU LH Communication Stop Mode

Either of the following is met:

  • Communication stop for "Front Door RH/R-Mirror (FR-Door/R-Mirror)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Front Door RH/R-Mirror (FR-Door/R-Mirror)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Front Door RH/R-Mirror (FR-Door/R-Mirror)" is 6 or more.)

Door Mirror ECU RH Communication Stop Mode

Either of the following is met:

  • Communication stop for "Driving Support (CruiseControl-ACC)" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Driving Support (CruiseControl-ACC)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Driving Support (CruiseControl-ACC)" is 6 or more.)

Driving Support ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Head Up Display" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Head Up Display" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Head Up Display" is 6 or more.)

Headup Display Communication Stop Mode

Either of the following is met:

  • Communication stop for "Front Radar" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Front Radar" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Front Radar" is 6 or more.)

Millimeter Wave Radar Sensor Communication Stop Mode

Either of the following is met:

  • Communication stop for "Motor Generator" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Motor Generator" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Motor Generator" is 6 or more.)

Motor Generator Control ECU Communication Stop Mode

Either of the following is met:

  • Communication stop for "Parking Assist Monitor System / Rear Camera" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Parking Assist Monitor System / Rear Camera" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Parking Assist Monitor System / Rear Camera" is 6 or more.)

Rear Television Camera Communication Stop Mode

Either of the following is met:

  • Communication stop for "Occupant Detection" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Occupant Detection" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Occupant Detection" is 6 or more.)

Restraints Occupant Classification System Module Communication Stop Mode

Either of the following is met:

  • Communication stop for "Grill Shutter" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Grill Shutter" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Grill Shutter" is 6 or more.)

Grille Shutter Communication Stop Mode

Either of the following is met:

  • Communication stop for "Front Camera Module" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Front Camera Module" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Front Camera Module" is 6 or more.)

Front Camera Module Communication Stop Mode

Either of the following is met:

  • Communication stop for "Tire Pressure" is indicated on the "Communication Bus Check" screen of the Techstream.
  • Communication stop history for "Tire Pressure" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Tire Pressure" is 6 or more.)

Tire Pressure Monitor ECU Communication Stop Mode

DTC Combination Table

Symptom

Suspected Area

Link

Although CAN communication is currently normal, an ECU connected to the CAN communication system has CAN communication DTCs.

The probable part for which communication is interrupted can be determined using DTC Combination Table and comparing the DTCs output from ECUs connected to the CAN communication system.

Open in One Side of Bus 5 Branch Line. Parking Assist ECU Communication Stop Mode. Parts Location

Radio Receiver Assembly Communication Stop Mode. Rear Television Camera Communication Stop Mode. Restraints Occupant Classification System Module Communication Stop Mode

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Meter / Gauge System(for Hv Model): Customize Parameters. Data List / Active Test. Diagnostic Trouble Code Chart
Customize Parameters CUSTOMIZE PARAMETERS NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to th ...

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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