NETWORKING: CAN COMMUNICATION SYSTEM: PROBLEM SYMPTOMS TABLE; 2019 - 2020 MY Sienna [08/2018

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
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.
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Result List of How to Proceed with Troubleshooting

Symptom

Suspected Area

See page

The result of "How to Proceed with Troubleshooting" is "Open in Bus 2 Main Bus Line".

Open in Bus 2 Main Bus Line

The result of "How to Proceed with Troubleshooting" is "Short in Bus 2 Lines".

Short in Bus 2 Lines

The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 2 Line".

Short to +B in Bus 2 Line

The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 2 Line".

Short to GND in Bus 2 Line

The result of "How to Proceed with Troubleshooting" is "Open in Bus 3 Main Bus Line".

Open in Bus 3 Main Bus Line

The result of "How to Proceed with Troubleshooting" is "Short in Bus 3 Lines".

Short in Bus 3 Lines

The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 3 Line".

Short to +B in Bus 3 Line

The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 3 Line".

Short to GND in Bus 3 Line

The result of "How to Proceed with Troubleshooting" is "Open in One Side of Bus 3 Branch Line".

Open in One Side of Bus 3 Branch Line

The result of "How to Proceed with Troubleshooting" is "Open in Bus 5 Main Bus Line".

Open in Bus 5 Main Bus Line

The result of "How to Proceed with Troubleshooting" is "Short in Bus 5 Lines".

Short in Bus 5 Lines

The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 5 Line".

Short to +B in Bus 5 Line

The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 5 Line".

Short to GND in Bus 5 Line

The result of "How to Proceed with Troubleshooting" is "Open in One Side of Bus 5 Branch Line".

Open in One Side of Bus 5 Branch Line

HINT:

Refer to How to Proceed with Troubleshooting for the Bus Check procedure.
The suspected communication stop area can be determined based on the ECU or sensor that was not displayed in CAN Bus Check and by referring to the following table.

Communication Stop Mode Table

Symptom

Suspected Area

See page

Communication stop for "Skid Control (ABS/VSC/TRAC)" is indicated on the "Communication Bus Check" screen of the Techstream.

Skid Control ECU Communication Stop Mode

Communication stop for "Clearance Warning (Intuitive Parking Assist)" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Intelligent Clearance Sonar System)

Clearance Warning ECU Communication Stop Mode

Communication stop for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check" screen of the Techstream.

Air Conditioning Amplifier Communication Stop Mode

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

Power Steering ECU Communication Stop Mode

Communication stop for "Spiral Cable (Steering Angle Sensor)" is indicated on the "Communication Bus Check" screen of the Techstream.

Steering Angle Sensor Communication Stop Mode

Communication stop for "ECM (Engine)" is indicated on the "Communication Bus Check" screen of the Techstream.

ECM Communication Stop Mode

Communication stop for "Main Body" is indicated on the "Communication Bus Check" screen of the Techstream.

Main Body ECU Communication Stop Mode

Communication stop for "Power Management" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Smart Key System)

Power Management Control ECU Communication Stop Mode

Communication stop for "Combination Meter" is indicated on the "Communication Bus Check" screen of the Techstream.

Combination Meter ECU Communication Stop Mode

Communication stop for "Certification (Smart)" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Smart Key System)

Certification ECU Communication Stop Mode

Communication stop for "Airbag" is indicated on the "Communication Bus Check" screen of the Techstream.

Center Airbag Sensor Communication Stop Mode

Communication stop for "Parking Assist Monitor System" is indicated on the "Communication Bus Check" screen of the Techstream.

Television Camera ECU Communication Stop Mode

Communication stop for "Panoramic View Monitor" is indicated on the "Communication Bus Check" screen of the Techstream.

Parking Assist ECU Communication Stop Mode

Communication stop for "Four Wheel Drive Control" is indicated on the "Communication Bus Check" screen of the Techstream.

(for AWD)

4WD Control ECU Communication Stop Mode

Communication stop for "Blind Spot Monitor Master" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Blind Spot Monitor System)

Blind Spot Monitor Sensor Communication Stop Mode

Communication stop for "DCM" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Telematics Transceiver)

DCM Communication Stop Mode

Communication stop for "Driving Support (Cruise Control-ACC)" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Toyota Safety Sense P)

Driving Support ECU Communication Stop Mode

Communication stop for "Display and Navigation (AVN1)" is indicated on the "Communication Bus Check" screen of the Techstream.

Radio Receiver Assembly Communication Stop Mode

Communication stop for "CAN Gateway" is indicated on the "Communication Bus Check" screen of the Techstream.

Central Gateway ECU Communication Stop Mode

Communication stop for "Front Radar" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Toyota Safety Sense P)

Millimeter Wave Radar Sensor Communication Stop Mode

Communication stop for "Front Camera Module" is indicated on the "Communication Bus Check" screen of the Techstream.

(w/ Toyota Safety Sense P)

Front Camera Module Communication Stop Mode

DTC Combination Table

Symptom

Suspected Area

See page

Although CAN communication is currently normal, ECUs connected to each bus store 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.