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Home >> Lexus >> 2010 >> GS 350 RWD V6-3.5L (2GR-FSE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Short in CAN Bus Lines >> Part 2

Part 2





CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Short in CAN Bus Lines
- Short in CAN Bus Lines

Continued

23. CHECK CAN BUS LINES FOR SHORT CIRCUIT (STEERING ANGLE SENSOR SUB BUS LINE)

(a) Disconnect the steering angle sensor connector (K19).

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





Standard resistance:





OK -- REPLACE STEERING ANGLE SENSOR

NG -- REPAIR OR REPLACE STEERING ANGLE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

24. CONNECT CONNECTOR

(a) Reconnect the skid control ECU sub bus line connector (K5) to the D-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

25. CHECK CAN BUS LINES FOR SHORT CIRCUIT (SKID CONTROL ECU WITH ACTUATOR SUB BUS LINE)

(a) Disconnect the skid control ECU connector (A15).

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





Standard resistance:





OK -- REPLACE SKID CONTROL ECU

NG -- REPAIR OR REPLACE SKID CONTROL ECU BRANCH WIRE OR CONNECTOR (CAN-H, CAN-L)

26. CONNECT CONNECTOR

(a) Reconnect the ECM sub bus line connector (K3) to the D-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

27. CHECK CAN BUS LINES FOR SHORT CIRCUIT (ECM)

(a) 2GR-FSE: Disconnect the ECM connector (A6).

(b) 1UR-FSE: Disconnect the ECM connector (A7).

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





Standard resistance:





OK -- REPLACE ECM

NG -- REPAIR OR REPLACE ECM SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

28. CONNECT CONNECTOR

(a) Reconnect the navigation ECU sub bus line connector (K95) to the D-CAN J/C B side (w/o earth terminal).

NEXT -- Continue to next step.

29. CHECK CAN BUS LINES FOR SHORT CIRCUIT (NAVIGATION ECU)

(a) Disconnect the navigation ECU connector (K46).

(b) Measure the resistance of the wire harness side connector.





Standard resistance:





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NAVIGATION ECU

OK -- REPLACE NAVIGATION ECU

30. CONNECT CONNECTOR

(a) Reconnect the yaw rate sensor sub bus line connector (K7) to the D-CAN J/C B side (w/o earth terminal).

NEXT -- Continue to next step.

31. CHECK CAN BUS LINES FOR SHORT CIRCUIT (YAW RATE SENSOR SUB BUS LINE)

(a) Disconnect the yaw rate sensor connector (K35).

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





Standard resistance:





OK -- REPLACE YAW RATE SENSOR

NG -- REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

32. CONNECT CONNECTOR

(a) Reconnect the CAN main bus line connector (K4) to the D-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

33. CHECK CAN BUS LINES FOR SHORT CIRCUIT (ABSORBER CONTROL ECU SUB BUS LINE)

NOTICE:
Only for vehicles with adaptive variable suspension control system. For other vehicles, go to next step.

(a) Disconnect the absorber control ECU sub bus line connector (K78) from the P-CAN J/C B side (w/o earth terminal).





NOTICE:
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:





OK -- CONNECT CONNECTOR
NG -- Continue to next step.

34. CONNECT CONNECTOR

(a) Reconnect the absorber control ECU sub bus line connector (K78) to the P-CAN J/C B side (w/o earth terminal).

NEXT -- Continue to next step.

35. CHECK CAN BUS LINES FOR SHORT CIRCUIT (POWER STEERING ECU SUB BUS LINE)

(a) Disconnect the power steering ECU sub bus line connector (K80) from the P-CAN J/C B side (w/o earth terminal).





NOTICE:
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:





OK -- CONNECT CONNECTOR
NG -- Continue to next step.

36. CONNECT CONNECTOR

(a) Reconnect the power steering ECU sub bus line connector (K80) to the P-CAN J/C B side (w/o earth terminal).

NEXT -- Continue to next step.

37. CHECK CAN BUS LINES FOR SHORT CIRCUIT (SKID CONTROL ECU SUB BUS LINE)

NOTICE:
Only for vehicles with the 2GR-FSE. For other vehicles, go to the next step.

(a) Disconnect the skid control ECU sub bus line connector (K75) from the D-CAN J/C A side (w/ earth terminal).





NOTICE:
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:





OK -- CONNECT CONNECTOR
NG -- Continue to next step.

38. CONNECT CONNECTOR

(a) Reconnect the skid control ECU sub bus line connector (K75) to the D-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

39. CHECK CAN BUS LINES FOR SHORT CIRCUIT (STEERING CONTROL ECU SUB BUS LINE)

NOTICE:
Only for vehicles with the 1UR-FSE. For other vehicles, go to the next step.

(a) Disconnect the steering control ECU sub bus line connector (K75) from the P-CAN J/C A side (w/ earth terminal).





NOTICE:
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:





OK -- CONNECT CONNECTOR
NG -- Continue to next step.

40. CONNECT CONNECTOR

(a) Reconnect the steering control ECU sub bus line connector (K75) to the P-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

41. CHECK CAN BUS LINES FOR SHORT CIRCUIT (CLEARANCE WARNING CONTROL ECU SUB BUS LINE)

NOTICE:
Only for vehicles with the 2GR-FSE and intuitive parking assist system. For other vehicles, go to the next step.

(a) Disconnect the clearance warning ECU sub bus line connector (K94) from the P-CAN J/C A side (w/ earth terminal).





NOTICE:
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:





OK -- CONNECT CONNECTOR
NG -- Continue to next step.

42. CONNECT CONNECTOR

(a) Reconnect the steering control ECU sub bus line connector (K94) to the P-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

43. CHECK CAN BUS LINES FOR SHORT CIRCUIT (4WD ECU SUB BUS LINE)

NOTICE:
Only for vehicles with the 4WD. For other vehicles, go to the next step.

(a) Disconnect the 4WD ECU sub bus line connector (K76) from the P-CAN J/C A side (w/ earth terminal).





NOTICE:
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:





OK -- CONNECT CONNECTOR
NG -- Continue to next step.

44. CONNECT CONNECTOR

(a) Reconnect the 4WD ECU sub bus line connector (K76) to the P-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

45. CHECK CAN BUS LINES FOR SHORT CIRCUIT (NAVIGATION ECU SUB BUS LINE)

NOTICE:
* Only for vehicles with the 1UR-FSE and navigation system. For other vehicles, go to the next step.
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(a) Disconnect the navigation ECU sub bus line connector (K102) from the P-CAN J/C A side (w/ earth terminal).

(b) Measure the resistance of the DLC3.





Standard resistance:





OK -- CONNECT CONNECTOR
NG -- Continue to next step.

46. CONNECT CONNECTOR

(a) Reconnect the navigation ECU sub bus line connector (K102) to the P-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

47. CHECK CAN BUS LINES FOR SHORT CIRCUIT (NETWORK GATEWAY ECU SUB BUS LINE)

(a) Disconnect the network gateway ECU sub bus line connector (K79) from the P-CAN J/C B side (w/o earth terminal).





NOTICE:
* Before disconnecting the connector, make a note of where it is connected.
* Reconnect the connector to its original position.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:





NG -- CONNECT CONNECTOR
OK -- Continue to next step.

48. CONNECT CONNECTOR

(a) Reconnect the network gateway ECU sub bus line connector (K79) to the P-CAN J/C B side (w/o earth terminal).

NEXT -- Continue to next step.

49. CHECK CAN BUS LINES FOR SHORT CIRCUIT (NETWORK GATEWAY ECU SUB BUS LINE)

(a) Disconnect the network gateway ECU connector (K66).

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





Standard resistance:





OK -- REPLACE NETWORK GATEWAY ECU

NG -- REPAIR OR REPLACE NETWORK GATEWAY ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

50. CONNECT CONNECTOR

(a) Reconnect the absorber control ECU sub bus line connector (K78) to the P-CAN J/C B side (w/o earth terminal).

NEXT -- Continue to next step.

51. CHECK CAN BUS LINES FOR SHORT CIRCUIT (ABSORBER CONTROL ECU SUB BUS LINE)

(a) Disconnect the absorber control ECU connector (K72).

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





Standard resistance:





OK -- REPLACE ABSORBER CONTROL ECU

NG -- REPAIR OR REPLACE ABSORBER CONTROL ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

52. CONNECT CONNECTOR

(a) Reconnect the power steering ECU sub bus line connector (K80) to the P-CAN J/C B side (w/o earth terminal).

NEXT -- Continue to next step.

53. CHECK CAN BUS LINES FOR SHORT CIRCUIT (POWER STEERING ECU SUB BUS LINE)

(a) Disconnect the power steering ECU connector (A23).

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





Standard resistance:





OK -- REPLACE POWER STEERING ECU

NG -- REPAIR OR REPLACE POWER STEERING ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

54. CONNECT CONNECTOR

(a) Reconnect the skid control ECU sub bus line connector (K75) to the P-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.

55. CHECK CAN BUS LINES FOR SHORT CIRCUIT (SKID CONTROL ECU SUB BUS LINE)

(a) Disconnect the skid control ECU connector (K93).

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





Standard resistance:





OK -- REPLACE SKID CONTROL ECU

NG -- REPAIR OR REPLACE SKID CONTROL ECU SUB BUS LINE OR CONNECTOR (CAN-H, CAN-L)

56. CONNECT CONNECTOR

(a) Reconnect the steering control ECU sub bus line connector (K75) to the P-CAN J/C A side (w/ earth terminal).

NEXT -- Continue to next step.
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