Part 2

NETWORKING: CAN COMMUNICATION SYSTEM: U1002 (CAN No. 2 BUS): Lost Communication with Gateway Module (Network Gateway ECU)
U1002 (CAN No. 2 BUS) - Lost Communication with Gateway Module (Network Gateway ECU)


Continued



23. CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)





(a) Disconnect the F21 No. 6 junction connector connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 7 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR)
OK -- Continue to next step.

24. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR SIDE)





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

Standard Resistance:





Text in Illustration





Result





C -- REPAIR OR REPLACE NO. 6 JUNCTION CONNECTOR

B -- CONNECT CONNECTOR
A -- Continue to next step.

25. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - CLEARANCE WARNING ECU)





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

Standard Resistance:





Text in Illustration





NG -- CONNECT CONNECTOR

OK -- REPAIR OR REPLACE NO. 6 JUNCTION CONNECTOR

26. CONNECT CONNECTOR

(a) Reconnect the F21 No. 6 junction connector connector.

NEXT -- Continue to next step.

27. CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)





(a) Disconnect the E68 No. 5 junction connector connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 6 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR)
OK -- Continue to next step.

28. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR SIDE)





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

Standard Resistance:





Text in Illustration





Result





C -- CONNECT CONNECTOR

B -- CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - YAW RATE SENSOR)
A -- Continue to next step.

29. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - SEAT BELT CONTROL ECU)

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





Standard Resistance:





Text in Illustration





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

30. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - YAW RATE SENSOR)





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

Standard Resistance:





Text in Illustration





NG -- CONNECT CONNECTOR

OK -- REPAIR OR REPLACE NO. 5 JUNCTION CONNECTOR

31. CONNECT CONNECTOR

(a) Reconnect the E68 No. 5 junction connector connector.

NEXT -- Continue to next step.

32. CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)





(a) Disconnect the E71 No. 4 junction connector connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR)
OK -- Continue to next step.

33. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - 4WD CONTROL ECU)





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

Standard Resistance:





Text in Illustration





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

34. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU)





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

Standard Resistance:





Text in Illustration





NG -- CONNECT CONNECTOR

OK -- REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR

35. CONNECT CONNECTOR

(a) Reconnect the E74 No. 7 junction connector connector.

NEXT -- Continue to next step.

36. CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR)





(a) Disconnect the E11 steering angle sensor connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING ANGLE SENSOR (CANH, CANL)

OK -- REPLACE STEERING ANGLE SENSOR Removal

37. CONNECT CONNECTOR

(a) Reconnect the E74 No. 7 junction connector connector.

NEXT -- Continue to next step.

38. CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU)





(a) Disconnect the A24 master cylinder solenoid (skid 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 BRANCH WIRE CONNECTED TO MASTER CYLINDER SOLENOID (SKID CONTROL ECU) (CANH, CANL)

OK -- REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU) Disassembly

39. CONNECT CONNECTOR

(a) Reconnect the E74 No. 7 junction connector connector.

NEXT -- Continue to next step.

40. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR)





(a) Disconnect the K29 No. 1 CAN junction connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NO. 1 CAN JUNCTION CONNECTOR (CANH, CANL)

OK -- REPLACE NO. 1 CAN JUNCTION CONNECTOR

41. CONNECT CONNECTOR

(a) Reconnect the F21 No. 6 junction connector connector.

NEXT -- Continue to next step.

42. CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU)





(a) Disconnect the F12 clearance warning 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 BRANCH WIRE CONNECTED TO CLEARANCE WARNING ECU (CANH, CANL)

OK -- REPLACE CLEARANCE WARNING ECU ASSEMBLY Removal

43. CONNECT CONNECTOR

(a) Reconnect the E68 No. 5 junction connector connector.

NEXT -- Continue to next step.

44. CHECK FOR SHORT IN CAN BUS WIRES (SEAT BELT CONTROL ECU)





(a) Disconnect the E42 seat belt 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 BRANCH WIRE CONNECTED TO SEAT BELT CONTROL ECU (CANH, CANL)

OK -- REPLACE SEAT BELT CONTROL ECU Removal

45. CONNECT CONNECTOR

(a) Reconnect the E68 No. 5 junction connector connector.

NEXT -- Continue to next step.

46. CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR)





(a) Disconnect the E50 yaw rate sensor connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO YAW RATE SENSOR (CANH, CANL)

OK -- REPLACE YAW RATE SENSOR ASSEMBLY Removal

47. CONNECT CONNECTOR

(a) Reconnect the E71 No. 4 junction connector connector.

NEXT -- Continue to next step.

48. CHECK FOR SHORT IN CAN BUS WIRES (4WD CONTROL ECU)





(a) Disconnect the A27 4WD 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 BRANCH WIRE CONNECTED TO 4WD CONTROL ECU (CAN+, CAN-)

OK -- REPLACE 4WD CONTROL ECU Removal

49. CONNECT CONNECTOR

(a) Reconnect the E71 No. 4 junction connector connector.

NEXT -- Continue to next step.

50. CHECK FOR SHORT IN CAN BUS WIRES (NETWORK GATEWAY ECU)





(a) Disconnect the E31 Network gateway 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 BRANCH WIRE CONNECTED TO NETWORK GATEWAY ECU (CA2H, CA2L)

OK -- REPLACE NETWORK GATEWAY ECU Removal

51. CHECK HARNESS AND CONNECTOR (NETWORK GATEWAY ECU - BATTERY AND BODY GROUND)

(a) Connect the cable to the negative (-) battery terminal.





(b) Disconnect the E31 network gateway ECU connector.

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

Standard Resistance:





(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE NETWORK GATEWAY ECU Removal