CAN

BSW COMMUNICATION CIRCUIT

Diagnosis Procedure


1. CHECK CAN DIAGNOSIS

Check the CAN diagnosis results from CONSULT to see that the CAN communication circuit has no malfunction.
NOTE:
For identification of CAN communication circuit, ITS communication circuit, and BSW communication circuit, refer to "System Diagram" Malfunction Area Chart.
Is the CAN communication circuit normal?
YES- GO TO 2.
NO- Check and repair CAN communication circuit.

2. CONNECTOR INSPECTION

1.Turn the ignition switch OFF.
2.Disconnect the battery cable from the negative terminal.
3.Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
-BSW control module
-Side radar LH
-Side radar RH
-Harness connector B69
-Harness connector B101
-Harness connector B103
-Harness connector B106
Is the inspection result normal?
YES- GO TO 3.
NO- Repair the terminal and connector.

3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Disconnect the following harness connectors.
-BSW control module
-Side radar RH
2.Check the continuity between the BSW control module harness connector and the side radar RH harness connector.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair the BSW control module branch line (BSW communication circuit side). Refer to "System Diagram" Malfunction Area Chart.

4. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

1.Disconnect the connector of side radar LH.
2.Check the continuity between the BSW control module harness connector terminals.





Is the inspection result normal?
YES- GO TO 5.
NO- Check the harness and repair the root cause.

5. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the BSW control module harness connector and the ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Check the harness and repair the root cause.

6. CHECK TERMINATION CIRCUIT

1.Remove the BSW control module and the side radar RH.





2.Check the resistance between the BSW control module terminals.





3.Check the resistance between the side radar RH terminals.





Is the inspection result normal?
YES- GO TO 7.
NO- Replace the BSW control module and/or the side radar RH.

7. CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced.
Inspection result
Reproduced-Replace the side radar LH.
Non-reproduced-Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.