Diagnosis System
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM
1. BUS CHECK
(a) Using Techstream, select "CAN Bus Check" from the "System Select".
2. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION
(a) Systems (ECUs, sensors) that use CAN communication vary depending on the vehicle's optional equipment. Check which systems (ECUs, sensors) are installed on the vehicle.
3. DTC TABLE BY ECU
HINT
* For the CAN communication system, CAN communication system DTCs stored in certain ECUs can be displayed using Techstream.
* If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING" How to Proceed With Troubleshooting.
(a) ECM
HINT
* DTC communication is via the CAN communication system.
* *: The ECM is malfunctioning if only U0101 is output. Refer to SFI system (2AR-FE: U0101, 2GR-FE: U0101).
(b) ECT
HINT
* DTC communication is via the CAN communication system.
* *: The ECM is malfunctioning if only U0100 is output. Refer to Automatic Transaxle system (U760E: U0100, U660E: U0100).
(c) SKID CONTROL ECU
HINT
* DTC communication is via the CAN communication system.
* *: TMC made only
(d) COMBINATION METER ECU
HINT
DTC communication is via the CAN communication system.
(e) AIR CONDITIONER AMPLIFIER
HINT
DTC communication is via the CAN communication system.
(f) MAIN BODY ECU (w/ Smart key system)
HINT
* DTC communication is via the CAN communication system.
* *: The main body ECU is malfunctioning if B1207 and/or B2326 are output alone. Refer to DTC chart Automatic Transaxle System - U660E.
(g) MAIN BODY ECU (w/o Smart key system)
HINT
Although the center airbag sensor is connected to the CAN communication system, CAN communication DTCs are not output.
(h) NAVIGATION RECEIVER ASSEMBLY (NAVIGATION ECU/AVN) (w/ Navigation system)
HINT
DTC communication is via the CAN communication system.
(i) CENTER AIRBAG SENSOR
HINT
Although the center airbag sensor is connected to the CAN communication system, CAN communication DTCs are not output.
(j) CERTIFICATION ECU
HINT
Although the Main Body ECU is connected to the CAN communication system, CAN communication DTCs are not output.
4. DTC COMBINATION TABLE
HINT
* o: Set
* X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
* [Triangle]: Set under the condition shown in the table above
* *1: TMC made only.
* *2: DTC is not output during communication error.
HINT
* o: Set
* X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens
* [Triangle]: The combination meter and main body ECU indicate communication errors.
* *1: TMC made only.
(a) Perform troubleshooting depending on the combination of DTCs output.
HINT
* ECM Communication Stop Mode ECM Communication Stop Mode
* Skid Control ECU Communication Stop Mode Skid Control ECU Communication Stop Mode
* Steering Angle Sensor Communication Stop Mode Steering Angle Sensor Communication Stop Mode
* Yaw Rate Sensor Communication Stop Mode Yaw Rate Sensor Communication Stop Mode
* Combination Meter ECU Communication Stop Mode Combination Meter ECU Communication Stop Mode
* Center Airbag Sensor Communication Stop Mode Center Airbag Sensor Communication Stop Mode
* Air Conditioner Amplifier ECU Communication Stop Mode Air Conditioning Amplifier Communication Stop Mode
* Main Body ECU Communication Stop Mode Main Body ECU Communication Stop Mode
* Navigation ECU Communication Stop Mode Navigation ECU Communication Stop Mode