Part 1

NETWORKING: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU

NOTICE:
* Turn the power switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.
* Turn the power switch off before inspecting CAN bus wires for a ground short.
* After the power switch is turned off, check that the key reminder warning system and light reminder warning system are not operating.
* Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.
* This section describes the standard CAN 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 NO. 1 JUNCTION CONNECTOR

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

(1) Connection diagram

Text in Illustration

*1: for Navigation receiver type

*2: for Radio and display type

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

*1: for Navigation receiver type

*2: for Radio and display type

2. CAN NO. 2 JUNCTION CONNECTOR

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

(1) Connection diagram

Text in Illustration

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

3. CAN NO. 3 JUNCTION CONNECTOR

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

(1) Connection diagram

Text in Illustration

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

4. CAN NO. 4 JUNCTION CONNECTOR

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

(1) Connection diagram

Text in Illustration

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

5. CAN NO. 5 JUNCTION CONNECTOR

(a) Check the CAN No. 5 junction connector.

(1) Connection diagram

Text in Illustration

(b) Check the connection diagram of the components which are connected to the CAN No. 5 junction connector.

6. DLC3

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

Standard Resistance:

Text in Illustration

7. ECM

(a) Disconnect the ECM connectors.

Text in Illustration

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

Standard Resistance:

for CAN No. 1 Bus Main Wire

for Power Management Bus Main Wire

8. COMBINATION METER

(a) Disconnect the combination meter connector.

Text in Illustration

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

Standard Resistance:

9. POWER MANAGEMENT CONTROL ECU

(a) CAN No. 1 Bus Branch Wire

(1) Disconnect the power management control ECU connector.

Text in Illustration

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

Standard Resistance:

for CAN No. 1 Bus Branch Wire

(b) CAN No. 2 Bus Main Wire

(1) Disconnect the power management control ECU connector.

Text in Illustration

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

Standard Resistance:

for CAN No. 2 Bus Main Wire

Text in Illustration

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

Standard Resistance:

for Power Management Bus Main Wire

10. MAIN BODY ECU

Text in Illustration

(a) Disconnect the main body ECU connector.

Text in Illustration

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

Standard Resistance: