Part 3

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U1005: Lost Communication with Electronically Controlled Brake Gateway Module
U1005 - Lost Communication with Electronically Controlled Brake Gateway Module

54. CONNECT CONNECTOR

(a) Reconnect the A13 ECM connector.

NEXT -- Continue to next step.

55. CHECK FOR SHORT IN CAN BUS WIRES (FRONT ACTIVE STABILIZER CONTROL ECU - ECM)





(a) Disconnect the A73 front active stabilizer control ECU connector.

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

Result





NG -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (FRONT ACTIVE STABILIZER CONTROL ECU - ECM)
OK -- Continue to next step.

56. CHECK FOR SHORT IN CAN BUS WIRES (FRONT ACTIVE STABILIZER CONTROL ECU)





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

Result





NG -- REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 1 JUNCTION CONNECTOR - FRONT ACTIVE STABILIZER CONTROL ECU)

OK -- REPLACE FRONT ACTIVE STABILIZER CONTROL ECU Removal

57. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - SEAT BELT CONTROL ECU)

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





Result





C -- REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR

B -- CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - REAR ACTIVE STABILIZER CONTROL ECU)
A -- Continue to next step.

58. CONNECT CONNECTOR

(a) Reconnect the S73 No. 4 junction connector connector.

NEXT -- Continue to next step.

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

(a) Disconnect the S47 seat belt control 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 SEAT BELT CONTROL ECU (CANH, CANL)

OK -- REPLACE SEAT BELT CONTROL ECU Removal

60. CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - REAR ACTIVE STABILIZER CONTROL ECU)





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

Result





NG -- CONNECT CONNECTOR

OK -- REPAIR OR REPLACE NO. 4 JUNCTION CONNECTOR

61. CONNECT CONNECTOR

(a) Reconnect the S73 No. 4 junction connector connector.

NEXT -- Continue to next step.

62. CHECK FOR SHORT IN CAN BUS WIRES (REAR ACTIVE STABILIZER CONTROL ECU)





(a) Disconnect the S67 rear active stabilizer control ECU.

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

Result





NG -- REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO REAR ACTIVE STABILIZER CONTROL ECU (CA1H, CA1L)

OK -- REPLACE REAR ACTIVE STABILIZER CONTROL ECU Removal

63. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BATTERY AND BODY GROUND)

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

NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

(b) Disconnect the A19 and A21 skid control ECU connectors.





(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:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE SKID CONTROL ECU Removal