CAN COMMUNICATION SYSTEM(w/o Central Gateway ECU) PROBLEM SYMPTOMS TABLE

Tip:

  • 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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Table 1. Result List of How to Proceed with Troubleshooting

Symptom

Suspected Area

Link

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

Open in CAN Main Bus Line (for LHD) (Includes DLC3 branch lines and terminating resistors)

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Open in CAN Main Bus Line (for RHD) (Includes DLC3 branch lines and terminating resistors)

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

Short in CAN Bus Lines (for LHD)

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Short in CAN Bus Lines (for RHD)

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

Short to +B in CAN Bus Line (for LHD)

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Short to +B in CAN Bus Line (for RHD)

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

Short to GND in CAN Bus Line (for LHD)

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Short to GND in CAN Bus Line (for RHD)

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

Open in One Side of CAN Branch Line

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Tip:

Refer to How to Proceed with Troubleshooting for the V bus check procedure.

Table 2. Communication Stop Mode Table

Symptom

Suspected Area

Link

"Skid Control (ABS/VSC/TRAC)" is not displayed on the GTS.

Brake Actuator (Skid Control ECU) Communication Stop Mode

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"Clearance Warning (Clearance Sonar2)" is not displayed on the GTS.

Clearance Warning ECU Communication Stop Mode

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"Air Conditioning Amplifier" is not displayed on the GTS.

Air Conditioning Amplifier Communication Stop Mode

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"Power Steering (EPS)" is not displayed on the GTS.

Power Steering ECU Communication Stop Mode

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"Spiral cable (Steering Angle Sensor)" is not displayed on the GTS.

Steering Angle Sensor Communication Stop Mode

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"ECM (Engine)" is not displayed on the GTS.*1

ECM Communication Stop Mode

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"ECM (Engine)" and "TCM"*4 are not displayed on the GTS.*2

"ECM (Engine)", "VALVEMATIC Driver"*5 and "Power Management"*6 are not displayed on the GTS.*3

"Main Body" is not displayed on the GTS.

Main Body ECU Communication Stop Mode

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"Combination Meter" is not displayed on the GTS.

Combination Meter ECU Communication Stop Mode

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"Certification (Smart)" is not displayed on the GTS.

Certification ECU Communication Stop Mode

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"Airbag" is not displayed on the GTS.

Center Airbag Sensor Communication Stop Mode

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"Headlight swivel (AFS)" is not displayed on the GTS.

AFS ECU Communication Stop Mode

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"Stop & Go" is not displayed on the GTS.

Engine Stop and Start ECU Communication Stop Mode

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"Display and Navigation (AVN1)" is not displayed on the GTS.

Audio Receiver Assembly Communication Stop Mode

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"Driving Support (Cruise Control-ACC)" is not displayed on the GTS.

Driving Support ECU Communication Stop Mode

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"Front Camera Module" is not displayed on the GTS.

Front Camera Module Communication Stop Mode

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Tip:

  • *1: for1NR-FE, 1ZR-FE, 1WW, 2ZR-FE or 8NR-FTS

  • *2: for 1ND-TV

  • *3: for 1ZR-FAE

  • *4: w/ Multi-mode Manual Transaxle System

  • *5: If "ECM (Engine)" is displayed but "VALVEMATIC Driver" is not displayed, a local CAN communication error between the ECM and continuously variable valve lift controller assembly is suspected. (Output DTC: U011B)

  • *6: If "ECM (Engine)" is displayed but "Power Management" is not displayed, a local CAN communication error between the ECM and generator control ECU assembly is suspected.

  • The generator control ECU assembly is displayed as "Power Management" when a CAN bus check is performed.

Table 3. DTC Combination Table

Symptom

Suspected Area

Link

Although CAN communication (V bus) is currently normal, ECUs connected to the V 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

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