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Home >> Toyota >> 2012 >> Prius PHV L4-1.8L (2ZR-FXE) Hybrid >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> CAN Communication System >> Diagnosis System
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Diagnosis System





NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

1. ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM

(a) V1 Bus

(1) ECM

(2) Power management control ECU

(3) Combination meter assembly

(4) Main body ECU

(5) Power steering ECU assembly

(6) Plug-in charge control ECU assembly

(7) Brake booster with master cylinder (Skid control ECU)

(8) Steering angle sensor

(9) Yaw rate and acceleration sensor

(10) Certification ECU (Smart key ECU assembly)

(11) Navigation ECU sub-assembly (Navigation receiver assembly)*1

(12) Radio and display receiver assembly*2

(13) DCM (Telematics transceiver)*3

(b) V2 Bus

(1) Power management control ECU

(2) Transmission control ECU assembly

(3) Driving support ECU*4

(4) Seat belt control ECU*5

(5) Center airbag sensor assembly

(6) Air conditioning amplifier assembly

(c) Power Management Bus

(1) Power management control ECU

(2) ECM

(3) Brake booster with master cylinder (Skid control ECU)

(d) Parking Assist Bus*4*5

(1) Driving support ECU

(2) Millimeter wave radar sensor assembly

HINT
*1: for Navigation receiver type

*2: for Radio and display type

*3: w/ Safety connect system

*4: w/ Dynamic radar cruise control system

*5: w/ Pre-collision system

2. CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT ADOPT CAN COMMUNICATION

(a) The systems (ECUs and sensors) that adopt CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed on the vehicle.





3. CAN BUS CHECK

HINT
The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the Techstream.

(a) Using the Techstream, select "CAN Bus Check" from "System Select".

4. DTC TABLE BY ECU

HINT
* In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the 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) Power Management Control ECU / Techstream Display "Hybrid Control"





HINT
* DTC communication uses the CAN communication system.
* *1: If this DTC is output, check the Hybrid Control System U0110-159.
* *2: If this DTC is output, check the Hybrid Control System U0110-160.
* *3: If this DTC is output, check the Hybrid Control System U019B.
* *4: If this DTC is output, check the Hybrid Battery System U029A.
* *5: If this DTC is output, check the Hybrid Control System U0424.
* *6: Dynamic radar cruise control system DTC

(b) Power Management Control ECU / Techstream Display "Cruise Control"





HINT
* DTC communication uses the CAN communication system.
* *7: Cruise control system DTC

(c) Power Management Control ECU / Techstream Display "Power Source Control"





HINT
* DTC communication uses the CAN communication system.
* *8: If U0293 is output alone, CAN communication is normal. Refer to Smart Key System Smart Key System (for Start Function).

(d) Power Management Control ECU / Techstream Display "PM1 Gateway"





HINT
* DTC communication uses the CAN communication system.
* "PM1 Gateway" output DTC is communication error in the V2 bus.

(e) ECM / Techstream Display "Engine and ECT"





HINT
DTC communication uses the CAN communication system.

(f) Transmission Control ECU Assembly / Techstream Display "Transmission Control"





HINT
DTC communication uses the CAN communication system.

(g) Power Steering ECU Assembly / Techstream Display "EMPS"





HINT
DTC communication uses the CAN communication system.

(h) Brake Booster with Master Cylinder (Skid Control ECU) / Techstream Display "ABS/VSC/TRAC"





HINT
DTC communication uses the CAN communication system.

(i) Steering Angle Sensor / Techstream Display "Spiral cable (Steering Angle Sensor)"

HINT
The steering angle sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

(j) Yaw Rate and Acceleration Sensor / Techstream Display "Yaw Rate Sensor"

HINT
The yaw rate and acceleration sensor is connected to the CAN communication system, but CAN communication DTCs are not output.

(k) Center Airbag Sensor Assembly / Techstream Display "SRS Airbag"

HINT
The center airbag sensor assembly is connected to the CAN communication system, but CAN communication DTCs are not output.

(l) Main Body ECU / Techstream Display "Main Body"





HINT
DTC communication uses the CAN communication system.

(m) Certification ECU (Smart Key ECU Assembly) / Techstream Display "Smart Access/ Smart Key/ Wireless Tuner"





HINT
DTC communication uses the CAN communication system.

(n) Air Conditioning Amplifier Assembly / Techstream Display "Air Conditioner"





HINT
DTC communication uses the CAN communication system.

(o) Combination Meter Assembly / Techstream Display "Combination Meter"





HINT
DTC communication uses the CAN communication system.

(p) Navigation ECU Sub-Assembly (Navigation receiver assembly) / Techstream Display "Navigation System"





HINT
DTC communication uses the CAN communication system.

(q) Radio and Display Receiver Assembly / Techstream Display "Navigation System"





HINT
DTC communication uses the CAN communication system.

(r) Seat Belt Control ECU / Techstream Display "Pre-Collision"





HINT
DTC communication uses the CAN communication system.

(s) Driving Support ECU / Techstream Display "Pre-Collision2"





HINT
* DTC communication uses the CAN communication system.
* *9: If U0235 is output alone, CAN communication is normal. Refer to Dynamic Radar Cruise Control System Dynamic Radar Cruise Control System.

(t) Driving Support ECU / Techstream Display "Radar Cruise"





HINT
* DTC communication uses the CAN communication system.
* *10: If U0235 is output alone, CAN communication is normal. Refer to Dynamic Radar Cruise Control System Dynamic Radar Cruise Control System.

(u) DCM (Telematics Transceiver) / Techstream Display "Telematics"





HINT
DTC communication uses the CAN communication system.

(v) Plug-in Charge Control ECU Assembly / Techstream Display "Plug-in Control"





HINT
* DTC communication uses the CAN communication system.
* *11: If this DTC is output, check the plug-in charge control system U0293-439.
* *12: If this DTC is output, check the plug-in charge control system U0293-449.

(w) Millimeter Wave Radar Sensor Assembly

HINT
The millimeter wave radar sensor assembly is connected to the CAN communication system, but CAN communication DTCs are not output.

5. DTC COMBINATION TABLE

(a) V1 Bus

































HINT
* o: Set
* X: Not set or may be set according to the malfunctioning part when one side of the CAN branch wire opens.
* -: DTC is not output.
* *1: DTC is not output during communication error, but will be output as a history DTC (past DTC) when communication returns to normal.
* *2: DTC U0123, U0124 and U0126 are not stored when DTC U0073 has already been stored.
* *3: If the power management bus circuit is normal
* *4: for Navigation receiver type
* *5: for Radio and display type
* Skid Control ECU Communication Stop Mode Skid Control ECU Communication Stop Mode
* Power Steering ECU Communication Stop Mode Power Steering ECU Communication Stop Mode
* Plug-in Charge Control ECU Communication Stop Mode CAN Communication System
* Steering Angle Sensor Communication Stop Mode Steering Angle Sensor Communication Stop Mode
* Yaw Rate Sensor Communication Stop Mode Yaw Rate Sensor Communication Stop Mode
* ECM Communication Stop Mode ECM Communication Stop Mode
* Main Body ECU Communication Stop Mode Main Body ECU Communication Stop Mode
* Combination Meter ECU Communication Stop Mode Combination Meter ECU Communication Stop Mode
* Certification ECU Communication Stop Mode Certification ECU Communication Stop Mode
* Power Management ECU Communication Stop Mode Power Management Control ECU Communication Stop Mode
* Navigation ECU Communication Stop Mode Navigation ECU Communication Stop Mode
* Audio Receiver Assembly Communication Stop Mode Audio Receiver Assembly Communication Stop Mode
* DCM Communication Stop Mode DCM Communication Stop Mode
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