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Home >> Lexus >> 2012 >> LS 460 AWD V8-4.6L (1UR-FSE) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> U Code Charts >> U1002 >> Gateway Module >> Part 2

Part 2





CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1002: Lost Communication with Gateway Module
U1002 - Lost Communication with Gateway Module

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DRIVING SUPPORT ECU (CANP, CANN)

OK -- REPLACE DRIVING SUPPORT ECU Removal

40. CONNECT CONNECTOR

(a) Reconnect the S60 No. 11 junction connector connector.

NEXT -- Continue to next step.

41. CHECK FOR SHORT IN CAN BUS WIRES (FRONT POWER SEAT ECU AND SWITCH LH)

(a) Disconnect the e46 front power seat ECU and switch LH connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO FRONT POWER SEAT ECU AND SWITCH LH (CANP, CANN)

OK -- REPLACE FRONT POWER SEAT ECU AND SWITCH LH Disassembly

42. CONNECT CONNECTOR

(a) Reconnect the S60 No. 11 junction connector connector.

NEXT -- Continue to next step.

43. CHECK FOR SHORT IN CAN BUS WIRES (FRONT MULTIPLEX NETWORK DOOR ECU LH)

(a) Disconnect the N10 front multiplex network door ECU LH connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO FRONT MULTIPLEX NETWORK DOOR ECU LH (CANP, CANN)

OK -- REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Disassembly

44. CONNECT CONNECTOR

(a) Reconnect the S60 No. 11 junction connector connector.

NEXT -- Continue to next step.

45. CHECK FOR SHORT IN CAN BUS WIRES (REAR MULTIPLEX NETWORK DOOR ECU LH)

(a) Disconnect the O14 rear multiplex network door ECU LH connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO REAR MULTIPLEX NETWORK DOOR ECU LH (CANP, CANN)

OK -- REPLACE REAR MULTIPLEX NETWORK DOOR ECU LH Removal

46. CONNECT CONNECTOR

(a) Reconnect the S60 No. 11 junction connector connector.

NEXT -- Continue to next step.

47. CHECK FOR SHORT IN CAN BUS WIRES (NO. 11 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR)

(a) Disconnect the L95 No. 10 junction connector connector.





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

Standard resistance:





NG -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 11 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR)
OK -- Continue to next step.

48. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR SIDE)

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





Standard resistance:





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

49. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - COMBINATION SWITCH)

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





Result





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

50. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - MAIN BODY ECU)

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





Result





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

51. CHECK FOR SHORT IN CAN BUS WIRE (NO. 10 JUNCTION CONNECTOR - MULTIPLEX TILT AND TELESCOPIC ECU)

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





Result





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

52. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - NO. 1 METER ECU)

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





Result





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

53. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - CERTIFICATION ECU)

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





Result





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

54. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - OUTER MIRROR SWITCH)

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





Result





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

55. CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - STEERING PAD ECU)

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





Result





NG -- CONNECT CONNECTOR

OK -- REPAIR OR REPLACE NO. 10 JUNCTION CONNECTOR

56. CONNECT CONNECTOR

(a) Reconnect the L95 No. 10 junction connector connector.

NEXT -- Continue to next step.

57. CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION SWITCH)

(a) Disconnect the L25 combination switch connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO COMBINATION SWITCH (CANP, CANN)

OK -- REPLACE COMBINATION SWITCH ASSEMBLY (WINDSHIELD WIPER SWITCH ASSEMBLY) Removal

58. CONNECT CONNECTOR

(a) Reconnect the L95 No. 10 junction connector connector.

NEXT -- Continue to next step.

59. CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU)

(a) Disconnect the L11 main body ECU connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MAIN BODY ECU (CANP, CANN)

OK -- REPLACE MAIN BODY ECU

60. CONNECT CONNECTOR

(a) Reconnect the L95 No. 10 junction connector connector.

NEXT -- Continue to next step.

61. CHECK FOR SHORT IN CAN BUS WIRES (MULTIPLEX TILT AND TELESCOPIC ECU)

(a) Disconnect the L34 multiplex tilt and telescopic ECU connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MULTIPLEX TILT AND TELESCOPIC ECU (CANP, CANN)

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Removal

62. CONNECT CONNECTOR

(a) Reconnect the L95 No. 10 junction connector connector.

NEXT -- Continue to next step.

63. CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 METER ECU)

(a) Disconnect the L10 No. 1 meter ECU connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NO. 1 METER ECU (CANP, CANN)

OK -- REPLACE COMBINATION METER ASSEMBLY (NO. 1 METER ECU SUB-ASSEMBLY) Disassembly

64. CONNECT CONNECTOR

(a) Reconnect the L95 No. 10 junction connector connector.

NEXT -- Continue to next step.

65. CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU)

(a) Disconnect the L15 certification ECU connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CERTIFICATION ECU (CANH, CANL)

OK -- REPLACE CERTIFICATION ECU

66. CONNECT CONNECTOR

(a) Reconnect the L95 No. 10 junction connector connector.

NEXT -- Continue to next step.

67. CHECK FOR SHORT IN CAN BUS WIRES (OUTER MIRROR SWITCH)

(a) Disconnect the L6 outer mirror switch connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO OUTER MIRROR SWITCH (CANP, CANN)

OK -- REPLACE OUTER MIRROR SWITCH Removal

68. CONNECT CONNECTOR

(a) Reconnect the L95 No. 10 junction connector connector.

NEXT -- Continue to next step.

69. CHECK FOR SHORT IN CAN BUS WIRES (STEERING PAD ECU)

(a) Disconnect the L134 spiral cable connector.





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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO STEERING PAD ECU (CANP, CANN)
OK -- Continue to next step.

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