DTC U1A01[86] Lost Communication With Front Camera (BCM)

1. Body control system check

Refer to "64.Body Control 10I.Troubleshooting(BCM) diagnostic system check-body controls".

2. BCM DTC check

1) Observe whether a DTC is set in the BCM on the scan tool. Is a DTC set in the BCM?

Yes

=>Go to Stereo camera communication verification.

No

Go to Intermittent conditions of body control system.

Refer to "223.Body Control 36D.Symptom(BCM) intermittent conditions of body control system".

3. Stereo camera communication verification

1) Use the scan tool to communicate with the stereo camera to display the data. Can communication with the stereo camera be established?

Yes

=>Go to Stereo camera DTC check.

No

Refer to "75.Driver Assistance System 10W.Troubleshooting(Stereo Camera) lost communication with the stereo camera".

4. Stereo camera DTC check

1) Observe whether a DTC is set in the stereo camera on the scan tool. Is a DTC set in the stereo camera?

Yes

Go to the applicable DTC diagnosis.

No

=>Go to Chassis CAN communication circuit and Body CAN communication circuit inspection.

5. Chassis CAN communication circuit and Body CAN communication circuit inspection

1) Perform Chassis CAN communication circuit inspection and Body CAN communication circuit inspection.

Refer to "64.Body Control 10I.Troubleshooting(Central GateWay) chassis CAN communication circuit inspection".

Refer to "64.Body Control 10I.Troubleshooting(Central GateWay) body CAN communication circuit inspection".

Procedure completion

=>Go to Current DTC check.

6. Current DTC check

1) Connect the scan tool.

2) Turn OFF the ignition switch.

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool. Is a DTC set?

Yes

=>Go to BCM replacement.

No

=>Go to Repair verification.

7. BCM replacement

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control BCM removal".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control BCM installation".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control BCM setting".

Procedure completion

=>Go to Repair verification.

8. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch for 30 seconds or more.

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool.