12. CAN Communication System

Inspection 12 - CAN Communications Lines, ABS Actuator and Electric Unit (Control Unit), Steering Angle Sensor System and CAN-LAN Converter ECU (CLC)

DTC U1000, C1156

1. CHECKING SELF-DIAGNOSIS RESULTS (1)







Check self-diagnosis results.

Do self-diagnosis results indicate anything other than the above?

YES >> Perform repair or replacement for the item indicated.
NO >> GO TO 2.

2. CHECKING CONNECTORS AND HARNESS BETWEEN ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) AND STEERING ANGLE SENSOR
1. Turn ignition switch OFF. Disconnect battery ground cable.
2. Disconnect ABS actuator and electric unit (control unit) harness connector and steering wheel angle sensor harness connector.










3. Check continuity between ABS actuator and electric unit (control unit) harness connector E39 and steering angle sensor harness connector M145.
4. Check all control unit and sensor connectors. (Check for missing, bent, or collapsed terminals in terminal housing.)

Is inspection result OK?

OK >> GO TO 3.
NG >> Harness connector malfunction. Repair or replace. GO TO 3.

3. CHECKING CONNECTORS AND HARNESS BETWEEN ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) AND CAN-LAN CONVERTER
1. Turn ignition switch OFF. Disconnect battery ground cable.
2. Disconnect ABS actuator and electric unit (control unit) harness connector and CAN-LAN converter harness connector.










3. Check continuity between ABS actuator and electric unit (control unit) harness connector E39 and CAN-LAN converter harness connector M147.
4. Check all control unit and sensor connectors. (Check for missing, bent, or collapsed terminals in terminal housing.)

Is inspection result OK?

OK >> GO TO 4.
NG >> Harness connector malfunction. Repair or replace. GO TO 4.

4. CHECKING SELF-DIAGNOSIS RESULTS (2)
1. Connect connectors to all control units and sensors.
2. Connect battery negative terminal. Turn ignition switch ON.
3. Erase self-diagnosis results. Then start engine and perform self-diagnosis.

Does only "ST ANGLE SEN COM CIR" appear on self-diagnosis results display?

YES >> Replace steering angle sensor (built into spiral cable). Then perform adjustment of neutral position and perform self diagnosis again.
NO >> GO TO 5.

5. CAN COMMUNICATION SYSTEM CHECK







Select "CAN DIAG SUPPORT MNTR" of data monitor items.

>> Print out monitor items. Then refer to "CAN COMMUNICATION".