Part 2
NETWORKING: CAN COMMUNICATION SYSTEM: Check CAN Bus Lines for Short Circuit
- Check CAN Bus Lines for Short Circuit
13. CHECK FOR SHORT IN CAN BUS WIRES (POWER STEERING ECU)
(a) Reconnect the power steering ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE POWER STEERING ECU Removal
OK -- Continue to next step.
14. CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR)
(a) Reconnect the yaw rate sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE YAW RATE AND ACCELERATION SENSOR Removal
OK -- Continue to next step.
15. CHECK FOR SHORT IN CAN BUS WIRES (CENTER AIRBAG SENSOR ASSEMBLY)
(a) Reconnect the center airbag sensor assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal
OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
16. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 J/C - CAN NO. 1 J/C)
(a) Reconnect the CAN No. 1 junction connector.
(b) Disconnect the CAN No. 2 junction connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - CAN NO. 2 J/C)
OK -- Continue to next step.
17. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 J/C - ECM)
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- CHECK FOR SHORT IN CAN BUS WIRES (ECM)
OK -- Continue to next step.
18. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 J/C - CERTIFICATION ECU)
(a) Disconnect the certification ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 2 J/C - CERTIFICATION ECU)
OK -- Continue to next step.
19. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 J/C - SKID CONTROL ECU)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Result:
B -- CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 J/C)
C -- REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 2 J/C - SKID CONTROL ECU)
A -- Continue to next step.
20. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 J/C - NAVIGATION ECU)
HINT
For vehicles without the navigation system, go to the next step.
(a) Disconnect the navigation ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (CAN NO. 2 J/C - NAVIGATION ECU)
OK -- Continue to next step.
21. CHECK FOR SHORT IN CAN BUS WIRES (CAN NO. 2 J/C)
(a) Reconnect the CAN No. 1 and No. 2 junction connectors.
(b) Measure the resistance according to the value(s) in the table below.
NOTICE:
The resistance must be measured after the main wire connected ECUs (ECM and power management control ECU), and the CAN No. 1 and No. 2 junction connectors are reconnected.
Standard Resistance:
Text in Illustration
NG -- REPLACE CAN NO. 2 JUNCTION CONNECTOR
OK -- Continue to next step.
22. CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU)
(a) Reconnect the certification ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Result:
B -- REPLACE SKID CONTROL ECU Removal
C -- REPLACE CERTIFICATION ECU (SMART KEY ECU) Removal
A -- Continue to next step.
23. CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU)
(a) Reconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Result:
B -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY (for HDD) Removal
C -- REPLACE SKID CONTROL ECU Removal
A -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY (for DVD) Removal
24. CHECK FOR SHORT IN CAN BUS WIRES (ECM)
(a) Disconnect the ECM connector.
(b) Disconnect the CAN No. 2 junction connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 2 J/C - ECM)
OK -- REPLACE ECM Removal
25. CHECK FOR SHORT IN CAN BUS WIRE (POWER MANAGEMENT CONTROL ECU)
(a) Disconnect the power management control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - POWER MANAGEMENT CONTROL ECU)
OK -- REPLACE POWER MANAGEMENT CONTROL ECU Removal