Part 2

NETWORKING: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU (CONTINUED)

NOTICE:
- Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.
- Turn the ignition switch off before inspecting CAN bus wires for a ground short.
- After the ignition 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 ignition 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.
HINT:
- Operating the ignition 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.
NOTICE: This section describes the standard CAN values for all CAN related components.

10. POWER STEERING ECU
(a) Disconnect the connectors of the power steering ECU.





Text in Illustration





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





11. AIR CONDITIONING AMPLIFIER
(a) Disconnect the connector of the air conditioning amplifier.





Text in Illustration





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





12. CENTER AIRBAG SENSOR ASSEMBLY
(a) Disconnect the connector of the center airbag sensor assembly.





Text in Illustration





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





13. SKID CONTROL ECU (BRAKE ACTUATOR)
(a) Disconnect the connector of the brake actuator (skid control ECU).





Text in Illustration





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





14. STEERING ANGLE SENSOR





(a) Disconnect the connector of the steering angle sensor.





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





15. YAW RATE SENSOR
(a) Disconnect the connector of the yaw rate sensor.





Text in Illustration





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





16. 4WD CONTROL ECU
(a) Disconnect the connector of the 4WD control ECU.





Text in Illustration





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





17. CERTIFICATION ECU
(a) Disconnect the connector of the certification ECU.





Text in Illustration





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





18. POWER MANAGEMENT CONTROL ECU





(a) Disconnect the connector of the power management control ECU.





(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for CAN No. 1 Bus Branch Wire





for CAN No. 2 Bus Main Wire





for Power Management Bus Main Wire





19. POWER BACK DOOR ECU (BACK DOOR MOTOR UNIT)
(a) Disconnect the connector of the power back door ECU (back door motor unit).





Text in Illustration





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





20. BACK DOOR CLOSER ECU





(a) Disconnect the connector of the back door closer ECU.





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





21. AFS ECU
(a) Disconnect the connector of the AFS ECU.





Text in Illustration





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