Part 2

NETWORKING: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU - (Continued)

NOTICE:
* 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 Service Precautions.
* Turn the power switch off before measuring the resistances between CAN main bus lines and between CAN branch lines.
* Turn the power switch off before inspecting CAN bus lines for a ground short.
* 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, 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.
* This section describes the standard values for all CAN related components.

HINT
* Operating the power switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
* Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

1. CAN JUNCTION LH CONNECTOR

(a) Check the CAN junction LH connector.

HINT
Connectors that connect to the CAN junction connector can be distinguished by color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wiring harnesses, and to make future maintenance easier.

(1) Connection diagram





Text in Illustration





* *1: Separate type yaw rate sensor

(2) Check the connection diagram of the components which are connected to the CAN junction LH connector.





* *1: Separate type yaw rate sensor

2. CAN JUNCTION RH CONNECTOR

(a) Check the CAN junction RH connector.

HINT
Connectors that connect to the CAN junction connector can be distinguished by color of their CAN bus lines. When the connectors have been disconnected from the CAN junction connector, reconnecting the connectors to non-original positions on the CAN junction connector does not affect system performance. However, it is preferred to reconnect the connectors to their original positions to avoid negative effects on the wiring such as tension on the wiring harnesses, and to make future maintenance easier.

(1) Connection diagram





Text in Illustration





* *1: for Navigation receiver type

* *2: for Radio and display type (w/ Intuitive parking assist system)

* *3: for Radio and display type (w/o Intuitive parking assist system)

* *4: w/ Intuitive parking assist system

(2) Check the connection diagram of the components which are connected to the CAN junction RH connector.





* *1: for Navigation receiver type

* *2: for Radio and display type (w/ Intuitive parking assist system)

* *3: for Radio and display type (w/o Intuitive parking assist system)

* *4: w/ Intuitive parking assist system

3. CAN NO. 1 JUNCTION CONNECTOR

(a) Check the CAN No. 1 junction connector.

(1) Connection diagram





Text in Illustration





(2) Check the connection diagram of the components which are connected to the CAN No. 1 junction connector.





4. CAN NO. 2 JUNCTION CONNECTOR (w/ Blind Spot Monitor System)

(a) Check the CAN No. 2 junction connector.

(1) Connection diagram





Text in Illustration





(2) Check the connection diagram of the components which are connected to the CAN No. 2 junction connector.





5. CAN NO. 3 JUNCTION CONNECTOR (w/ Blind Spot Monitor System)

(a) Check the CAN No. 3 junction connector.

(1) Connection diagram





Text in Illustration





(2) Check the connection diagram of the components which are connected to the CAN No. 3 junction connector.





6. CAN NO. 4 JUNCTION CONNECTOR (w/ Blind Spot Monitor System)

(a) Check the CAN No. 4 junction connector.

(1) Connection diagram





Text in Illustration





(2) Check the connection diagram of the components which are connected to the CAN No. 4 junction connector.





7. DLC3

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

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





Text in Illustration





Standard Resistance:





8. POWER MANAGEMENT CONTROL ECU





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(a) Sub Bus 11 Main Lines

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

(2) Disconnect the power management control ECU connectors.





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

Standard Resistance:

Sub Bus 11 Main Lines





(b) V Bus Branch Lines and Sub Bus 15 Main Lines

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

(2) Disconnect the power management control ECU connectors.





Text in Illustration





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

Standard Resistance:

V Bus Branch Lines





Sub Bus 15 Main Lines





9. ECM





Text in Illustration





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

(b) Disconnect the ECM connectors.





Text in Illustration





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

Standard Resistance:

V Bus Main Lines





Sub Bus 15 Main Lines





10. COMBINATION METER ASSEMBLY





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

(b) Disconnect the combination meter assembly connector.





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

Standard Resistance:





11. INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)





Text in Illustration





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

(b) Disconnect the main body ECU (multiplex network body ECU) connectors.





Text in Illustration





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

Standard Resistance:





12. BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)





Text in Illustration





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

(b) Disconnect the brake booster with master cylinder assembly (skid control ECU) connector.





Text in Illustration





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

Standard Resistance:

V Bus Branch Lines





Sub Bus 15 Branch Lines